지침 개정에 따른 경과 조치

이 지침은 발간 시점부터 적용하며, 이미 시행 중인 설계 용역

이나 건설공사에 대하여 발주기관의 장이 필요하다고 인정하면

적용할 수 있습니다.

 

머 리 말

도로는 사회적, 경제적으로 중요한 역할을 수행하고 있습니다. 최근

빈발하는 집중호우에 의한 도로의 침수 또는 비탈면 유실은 인적 피해와

경제적 피해를 유발시키고 있으며, 특히 도시부 도로의 지하차도 침수는

도시의 기능을 정지시킴으로서 심각한 사회문제를 발생시키기도 합니다.

따라서 우리 부는 최근 집중호우로 인한 도시부 도로의 배수불량, 지하

차도 침수로 인한 피해를 최소화하기 위하여 지역의 특성을 반영하여 효율

적인 도로 배수시설을 설계할 수 있도록 하는 “도로 배수시설 설계 및 관리

지침”을 개정하게 되었습니다.

이 지침에서는 최근의 집중호우 특성과 설계빈도를 강화하여 배수시설

용량을 확보하도록 하였고, 도로 노면배수의 효율을 높이기 위한 방안으로

도로 측면 부지 전체를 이용하여 배수토록 하는 선배수 설계와 배수계통 설계

개념을 도입하여 기존 하수도시설과 효율적으로 연계 처리할 수 있도록

하였습니다.

특히, 집중호우에 의한 도시부 지하차도 침수를 방지하기 위해 설계

빈도를 상향 조정하였으며 도로 배수시설 관리를 강화하여 도시지역의 수해

예방을 도모하는 방안도 마련하였습니다.

앞으로도 개정이 필요한 부분은 지속적으로 보완할 예정이오니 적용하시는

실무 기술자들의 계속적인 관심과 조언을 부탁드립니다. 마지막으로 본

지침을 마련하는데 참여하신 한국건설기술연구원 연구진, 자문위원 그리고

국토교통부 관계공무원 여러분의 노고에 깊은 감사를 드립니다.

2025년 2월

국토교통부 도로국장 이 우 제

 

목 차

Ⅰ총 칙

제 1 장 목 적····································································································Ⅰ-1

제 2 장 적용범위·······························································································Ⅰ-2

제 3 장 용어정의·······························································································Ⅰ-4

Ⅱ지방지역 도로배수시설

제 1 장 개요······································································································Ⅱ-1

제 2 장 배수시설의 계획··················································································Ⅱ-2

2.1 일반사항······································································································Ⅱ-2

2.2 배수시설의 구성·························································································Ⅱ-3

2.3 배수시설의 계획·························································································Ⅱ-5

2.3.1 배수시설의 기본계획·············································································Ⅱ-5

2.3.2 배수시설의 계통계획·············································································Ⅱ-7

2.4 배수시설의 설계조건··············································································Ⅱ-10

제 3 장 도로 배수 조사·················································································Ⅱ-12

3.1 일반사항····································································································Ⅱ-12

3.2 조사···········································································································Ⅱ-15

3.2.1 기상조사······························································································Ⅱ-16

3.2.2 지형 및 지표 조사··············································································Ⅱ-16

3.2.3 토질과 지하수 조사············································································Ⅱ-17

3.2.4 수계조사······························································································Ⅱ-18

3.2.5 토지이용 및 시설물 조사···································································Ⅱ-19

3.2.6 표면수 조사·························································································Ⅱ-20

3.2.7 침투수 조사·························································································Ⅱ-20

3.3 수문 조사··································································································Ⅱ-21

3.3.1 수문자료 조사·····················································································Ⅱ-21

3.3.2 유역 조사····························································································Ⅱ-22

3.3.3 하천 조사····························································································Ⅱ-23

3.3.4 범람원 조사·························································································Ⅱ-24

제 4 장 도로 배수의 수문설계·······································································Ⅱ-25

4.1 일반사항····································································································Ⅱ-25

4.2 설계빈도의 결정·······················································································Ⅱ-25

4.3 설계홍수량································································································Ⅱ-27

4.3.1 설계홍수량 산정·················································································Ⅱ-27

4.3.2 강우강도······························································································Ⅱ-28

4.3.3 유출계수······························································································Ⅱ-29

4.3.4 도달시간······························································································Ⅱ-32

4.4 개수로·······································································································Ⅱ-34

4.4.1 개수로 흐름상태·················································································Ⅱ-34

4.4.2 유량과 유속·························································································Ⅱ-37

4.4.3 경제적인 수로 단면············································································Ⅱ-39

제 5 장 노면 배수··························································································Ⅱ-40

5.1 일반사항····································································································Ⅱ-40

5.2 노면 배수의 수리해석··············································································Ⅱ-43

5.3 도로의 경사······························································································Ⅱ-46

5.4 측구···········································································································Ⅱ-47

5.4.1 측구의 수리해석·················································································Ⅱ-47

5.4.2 측구의 설계빈도·················································································Ⅱ-50

5.4.3 측구의 종류·························································································Ⅱ-51

5.5 집수정·······································································································Ⅱ-55

5.6 쌓기 구간의 길어깨 배수········································································Ⅱ-60

5.6.1 다이크··································································································Ⅱ-60

5.6.2 쌓기부 배수구·····················································································Ⅱ-61

5.6.3 쌓기부 종배수구 간격 결정·······························································Ⅱ-62

5.7 깎기 구간의 길어깨 배수········································································Ⅱ-63

5.7.1 깎기부 집수정 설치위치 결정····························································Ⅱ-63

5.7.2 깎기부 집수정·····················································································Ⅱ-65

5.7.3 집수정 간격·························································································Ⅱ-66

5.7.4 깎기부 배수구·····················································································Ⅱ-67

5.7.5 종배수관 및 횡배수관········································································Ⅱ-67

5.8 중앙분리대의 배수···················································································Ⅱ-68

5.8.1 중앙분리대의 집수정 간격·································································Ⅱ-69

5.8.2 종배수관 및 횡배수관········································································Ⅱ-70

5.9 선배수시설의 설계···················································································Ⅱ-71

5.10 도로 인접부의 배수···············································································Ⅱ-73

5.11 배수구조물 접합부 처리········································································Ⅱ-74

5.12 기타 도로 배수시설···············································································Ⅱ-75

5.12.1 월류도로 ··························································································Ⅱ-75

5.12.2 자전거 도로의 배수 ········································································Ⅱ-76

제 6 장 지하 배수··························································································Ⅱ-78

6.1 일반사항····································································································Ⅱ-78

6.2. 지하 배수의 수리····················································································Ⅱ-79

6.2.1 지하 배수시설의 조사········································································Ⅱ-79

6.2.2 지하 배수의 수리해석········································································Ⅱ-81

6.3 지하 배수시설의 종류··············································································Ⅱ-85

6.3.1 종방향 배수시설·················································································Ⅱ-85

6.3.2 횡방향 및 수평배수시설·····································································Ⅱ-86

6.3.3 배수층··································································································Ⅱ-87

6.4 지하 배수의 수리해석··············································································Ⅱ-87

6.4.1 지하 배수구의 기능············································································Ⅱ-87

6.4.2 지하 배수구의 깊이············································································Ⅱ-88

6.4.3 지하 배수구의 구조············································································Ⅱ-89

6.4.4 길어깨의 지하 배수구········································································Ⅱ-93

6.4.5 횡단 지하 배수구················································································Ⅱ-95

6.4.6 차단배수층···························································································Ⅱ-96

6.4.7 토목섬유를 사용한 포장배수······························································Ⅱ-97

6.4.8 중앙분리대 지하 배수시설·································································Ⅱ-98

6.5 지하 배수 기타 사항···············································································Ⅱ-100

6.5.1 필터재료의 선정···············································································Ⅱ-100

6.5.2 배수구 굴착······················································································Ⅱ-102

6.5.3 집수관의 매설···················································································Ⅱ-102

6.5.4 지하 배수구조물 접합부 처리·························································Ⅱ-103

제 7 장 비탈면 배수·····················································································Ⅱ-105

7.1 일반사항·································································································Ⅱ-105

7.2 비탈면 배수계획·····················································································Ⅱ-107

7.2.1 땅깎기 비탈면의 배수계획·······························································Ⅱ-108

7.2.2 흙쌓기 비탈면의 배수계획·······························································Ⅱ-109

7.3 비탈면에 미치는 물의 작용···································································Ⅱ-110

7.3.1 비탈면 배수와 비탈면의 안정·························································Ⅱ-110

7.3.2 비탈면을 유하하는 우수에 의한 침식·············································Ⅱ-110

7.3.3 비탈면 용출수···················································································Ⅱ-111

7.4 비탈면 배수시설의 설계········································································Ⅱ-112

7.4.1 비탈어깨 배수시설 및 산마루 배수구·············································Ⅱ-112

7.4.2 배수구·······························································································Ⅱ-115

7.4.3 소단 배수시설···················································································Ⅱ-117

7.4.4 비탈끝 배수시설···············································································Ⅱ-118

7.4.5 비탈면에서 용출수 등의 처리·························································Ⅱ-118

제 8 장 횡단 배수························································································Ⅱ-122

8.1 일반사항·································································································Ⅱ-122

8.2 도로암거의 수리·····················································································Ⅱ-124

8.2.1 도로암거의 흐름 분류······································································Ⅱ-124

8.2.2 도로 암거의 흐름 형상····································································Ⅱ-125

8.2.3 도로 암거의 수리특성······································································Ⅱ-135

8.3 도로 암거의 수리설계············································································Ⅱ-137

8.3.1 도표를 이용한 반복시산에 의한 방법·············································Ⅱ-138

8.3.2 도식에 의한 방법·············································································Ⅱ-140

8.3.3 토사퇴적을 고려한 수리계산···························································Ⅱ-146

8.4 도로암거의 설계 고려사항····································································Ⅱ-162

제 9 장 구조물 배수·····················································································Ⅱ-164

9.1 일반사항·································································································Ⅱ-164

9.2 교량․고가구조의 배수··········································································Ⅱ-164

9.2.1 배수시설의 종류···············································································Ⅱ-164

9.2.2 배수 홈통··························································································Ⅱ-165

9.2.3 배수관·······························································································Ⅱ-167

9.3 터널 배수·······························································································Ⅱ-170

9.3.1 배수 형식··························································································Ⅱ-170

9.3.2 배수형 터널의 적용조건 및 고려사항·············································Ⅱ-172

9.3.3 배수형 터널의 세부사항···································································Ⅱ-173

9.3.4 터널 배수의 종류·············································································Ⅱ-174

9.3.5 터널의 배수시스템············································································Ⅱ-175

9.3.6 배수용량 산정···················································································Ⅱ-177

9.4 옹벽 배수·······························································································Ⅱ-178

제 10 장 토석류 대책시설···········································································Ⅱ-182

10.1 일반사항·······························································································Ⅱ-182

10.2 토석류 대책시설의 계획······································································Ⅱ-183

10.2.1 토석류 대책시설의 설치 계획·······················································Ⅱ-183

10.2.2 토석류 흐름제어 방법····································································Ⅱ-186

10.2.3 토석류 대책시설의 종류································································Ⅱ-187

10.3 토석류 조사 및 설계···········································································Ⅱ-188

10.3.1 조사·································································································Ⅱ-188

10.3.2 토석류 대책시설 설계····································································Ⅱ-191

제 11 장 도로 배수시설의 관리··································································Ⅱ-193

11.1 일반사항·······························································································Ⅱ-193

11.2 도로 배수시설의 관리계획··································································Ⅱ-193

11.2.1 계획·································································································Ⅱ-193

11.2.2 관리절차 ························································································Ⅱ-195

11.2.3 점검·································································································Ⅱ-196

11.3 도로 배수시설물별 관리 및 점검·······················································Ⅱ-198

11.3.1 노면 배수시설················································································Ⅱ-198

11.3.2 지하 배수시설················································································Ⅱ-199

11.3.3 비탈면 배수시설·············································································Ⅱ-201

11.3.4 횡단 배수시설················································································Ⅱ-203

11.3.5 구조물 배수시설·············································································Ⅱ-204

11.3.6 토석류 대책시설·············································································Ⅱ-206

Ⅲ. 도시지역 도로배수시설

제 1 장 개 요····································································································Ⅲ-1

제 2 장 배수 계획 및 조사··············································································Ⅲ-2

2.1 일반사항······································································································Ⅲ-2

2.2 도시부 도로 배수 계획··············································································Ⅲ-3

2.3 도시부 도로 배수 조사··············································································Ⅲ-6

2.4 도시부 도로 배수시설의 구성····································································Ⅲ-7

2.5 도시부 도로 배수계통 계획·····································································Ⅲ-11

2.6 도시부 도로 배수시설의 하수도시설과의 연계처리·······························Ⅲ-13

제 3 장 도로 배수의 수문 설계·····································································Ⅲ-14

3.1 일반사항····································································································Ⅲ-14

3.2 설계빈도의 결정·······················································································Ⅲ-14

3.3 설계홍수량································································································Ⅲ-16

3.3.1 유출계수······························································································Ⅲ-18

3.3.2 도달시간의 산정·················································································Ⅲ-19

3.3.3 인접지역 배수의 유역 산정·······························································Ⅲ-20

3.3.4 유속 및 유량·······················································································Ⅲ-20

3.3.5 관수로··································································································Ⅲ-21

제 4 장 노면 배수··························································································Ⅲ-22

4.1 일반사항····································································································Ⅲ-22

4.2 측구···········································································································Ⅲ-23

4.4 선배수 시설의 설계·················································································Ⅲ-25

4.5 집수정 및 우수받이·················································································Ⅲ-27

4.6 중앙분리대 배수·······················································································Ⅲ-30

제 5 장 종ㆍ횡단 배수···················································································Ⅲ-31

5.1 일반사항····································································································Ⅲ-31

5.2 관거 수리설계···························································································Ⅲ-33

5.2.1 관거내 흐름의 분류············································································Ⅲ-33

5.2.2 관거 내 흐름의 수리특성···································································Ⅲ-34

5.2.3 도로 관거의 수리설계········································································Ⅲ-36

5.2.4 도로 관거의 수리설계 고려사항························································Ⅲ-37

5.3 배수관거····································································································Ⅲ-38

5.3.1 단면 및 최소관경················································································Ⅲ-38

5.3.2 도로 배수관거의 유속과 경사····························································Ⅲ-39

5.3.3 도로 배수관거의 매설위치 및 깊이···················································Ⅲ-39

5.3.4 도로 배수관거의 접합········································································Ⅲ-40

5.3.5 우수배수 청소구·················································································Ⅲ-43

제 6 장 도시부 지하차도 배수·······································································Ⅲ-45

6.1 일반사항····································································································Ⅲ-45

6.2 지하차도 배수시설 설계··········································································Ⅲ-45

6.2.1 집수유역 면적 산정············································································Ⅲ-45

6.2.2 우수 유입량 산정················································································Ⅲ-46

6.2.3 배수측구 단면·····················································································Ⅲ-47

6.2.4 횡단 배수관·························································································Ⅲ-47

6.2.5 집수정··································································································Ⅲ-48

6.3 펌프시설····································································································Ⅲ-49

제 7 장 비탈면 배수 및 토석류 대책시설·····················································Ⅲ-50

7.1 일반사항····································································································Ⅲ-50

7.2 비탈면 배수시설·······················································································Ⅲ-52

7.2.1 비탈어깨 배수시설··············································································Ⅲ-52

7.2.2 배수구··································································································Ⅲ-54

7.2.3 소단 배수시설·····················································································Ⅲ-56

7.2.4 비탈끝 배수시설·················································································Ⅲ-57

제 8 장 도로저류시설·····················································································Ⅲ-58

8.1 일반사항····································································································Ⅲ-58

8.2 도로저류시설의 계획 및 조사·································································Ⅲ-59

8.2.1 도로저류시설의 계획··········································································Ⅲ-59

8.2.2 도로저류시설 조사··············································································Ⅲ-60

8.3 도로저류시설의 설계················································································Ⅲ-61

8.3.1 도로저류시설의 설계빈도 및 홍수량 산정········································Ⅲ-61

8.3.2 도로저류시설의 배수능력 결정··························································Ⅲ-63

8.3.3 도로저류시설 종류··············································································Ⅲ-63

8.3.4 도로침투시설·······················································································Ⅲ-65

제 9 장 도시부 도로 배수관리·······································································Ⅲ-68

9.1 일반사항····································································································Ⅲ-68

9.2 도시부 도로 배수시설의 관리 계획························································Ⅲ-71

9.3 도시부 도로 배수시설 관리·····································································Ⅲ-72

9.3.1 노면 배수시설·····················································································Ⅲ-72

9.3.2 횡단 배수시설·····················································································Ⅲ-72

9.3.3 지하 배수시설·····················································································Ⅲ-73

9.3.4 비탈면 배수시설·················································································Ⅲ-73

9.3.5 토석류 대책시설·················································································Ⅲ-74

9.3.6 도로저류시설·······················································································Ⅲ-75

9.3.7 지하차도 배수시설··············································································Ⅲ-75

그 림 목 차

Ⅱ. 지방지역 도로배수시설

<그림 1.1.1> 지방지역의 도로 배치 개념도···········································Ⅱ-1

<그림 2.2.1> 배수시설의 명칭 및 구분··················································Ⅱ-4

<그림 2.3.1> 도로 배수시설의 설계 흐름··············································Ⅱ-6

<그림 2.3.2> 도로 배수시설 설계 흐름··················································Ⅱ-8

<그림 3.1.1> 도로 배수시설의 종류와 조사항목·································Ⅱ-13

<그림 3.1.2> 도로 배수시설 조사 절차················································Ⅱ-14

<그림 3.2.1> 깊은 깎기의 조사 깊이···················································Ⅱ-17

<그림 4.3.1> 수로 및 하천에서유입/유하시간·····································Ⅱ-32

<그림 4.3.2> 횡배수 암거에서 유입/유하시간·····································Ⅱ-32

<그림 4.4.1> 비에너지와 수심의 관계··················································Ⅱ-35

<그림 5.1.1> 노면 배수의 종류····························································Ⅱ-41

<그림 5.1.2> 노면 배수시설의 설계 흐름············································Ⅱ-41

<그림 5.1.3> 곡선 도로에 있어서 노면수의 집중·······························Ⅱ-42

<그림 5.2.1> 등류 흐름 설계 절차·······················································Ⅱ-43

<그림 5.2.2> 부등류 흐름 설계 절차···················································Ⅱ-44

<그림 5.2.3> 배수로로 유입되는 유량의 형태·····································Ⅱ-45

<그림 5.2.4> 배수로의 흐름 형태·························································Ⅱ-45

<그림 5.4.1> 측구흐름의 예··································································Ⅱ-48

<그림 5.4.2> 두 종류의 직선경사를 조합하는 경우의 횡단경사········Ⅱ-49

<그림 5.4.3> 토사측구의 종류······························································Ⅱ-51

<그림 5.4.4> V 형 측구········································································Ⅱ-52

<그림 5.4.5> 산마루 측구·····································································Ⅱ-52

<그림 5.4.6> L형 측구 형식·······························································Ⅱ-53

<그림 5.4.7> U형 측구·········································································Ⅱ-54

<그림 5.5.1> 집수정 유입구 사례·························································Ⅱ-56

<그림 5.5.2> 종단 곡선부와 고가도로의 우수받이 배치·····················Ⅱ-56

<그림 5.5.3> 집수정 및 우수받이의 덮개 종류 ·································Ⅱ-57

<그림 5.5.4> 스틸 그레이트 설치방향··················································Ⅱ-57

<그림 5.6.1> 다이크 형식·····································································Ⅱ-60

<그림 5.6.2> 흙쌓기부 배수구 단면·····················································Ⅱ-61

<그림 5.6.3> 흙쌓기부 배수구 간격 결정을 위한 집수폭 개념도······Ⅱ-62

<그림 5.7.1> 깎기부 집수정 종류·······················································Ⅱ-65

<그림 5.7.2> 깎기부 배수구··································································Ⅱ-67

<그림 5.8.1> 중앙분리대 배수시설 (예시) ··········································Ⅱ-69

<그림 5.8.2> 중앙분리대 집수정 간격 결정을 위한 집수폭 개념도···Ⅱ-70

<그림 5.8.3> 중앙분리대 집수정 간격의 보정계수······························Ⅱ-70

<그림 5.9.1> 선배수개념도····································································Ⅱ-71

<그림 5.9.2> 도로의 선배수시설(예시) ················································Ⅱ-72

<그림 5.11.1> L형측구와 v형측구 접합··············································Ⅱ-74

<그림 5.11.2> 계곡부 v형측구 접합 ··················································Ⅱ-74

<그림 5.11.3> 쌓기부 배수구와 V형측구 접합···································Ⅱ-74

<그림 5.11.4> 쌓기부 배수구와 V형측구 접합···································Ⅱ-75

<그림 5.12.1> 월류에 의한 도로 성토면 유실방지 대책····················Ⅱ-76

<그림 5.12.2> 중앙분리대에 통과 집수정 설치 사례··························Ⅱ-76

<그림 6.1.1> 지하 배수시설의 분류·····················································Ⅱ-78

<그림 6.2.2> 불투수층의 경사가 큰 경우············································Ⅱ-81

<그림 6.2.3> 불투수층 경사가 완만한 경우········································Ⅱ-82

<그림 6.2.4> 불투수층이 깊은 경우·····················································Ⅱ-83

<그림 6.2.5> 유선망의 예·····································································Ⅱ-84

<그림 6.3.1> 종방향 차단 배수····························································Ⅱ-85

<그림 6.3.2> 지하수 강하를 위한 대칭형 종방향 배수······················Ⅱ-85

<그림 6.3.3> 포장층내 침투수 배제를 위한 종방향 배수···················Ⅱ-86

<그림 6.4.1> 지하 배수구의 깊이 산정(예) ·········································Ⅱ-89

<그림 6.4.2> 형식별 맹암거 상세도·····················································Ⅱ-92

<그림 6.4.3> 양측의 길어깨에 설치된 지하 배수구····························Ⅱ-93

<그림 6.4.4> 편측에 설치된 지하 배수구············································Ⅱ-93

<그림 6.4.5> 중앙분리대가 있는 경우의 지하 배수구························Ⅱ-94

<그림 6.4.6> 지하 배수구의 설치(예) ··················································Ⅱ-95

<그림 6.4.7> 횡단 지하 배수구····························································Ⅱ-96

<그림 6.4.8> 횡단 지하 배수구의 설치방향과 단면 사례···················Ⅱ-96

<그림 6.4.9> 차단배수층내에 매설된 집수관·······································Ⅱ-97

<그림 6.4.10> 포장 구조물에 적용되는 보강용 토목섬유의 각종 사용방법··Ⅱ-98

<그림 6.4.11> 중앙분리대의 지하 배수구············································Ⅱ-99

<그림 6.4.12> 중앙분리대 양쪽 높이가 다를 경우 ·························Ⅱ-100

<그림 6.5.1> 필터재료의 입도곡선·····················································Ⅱ-101

<그림 6.5.2> 횡배수관과 v형측구 접합(예) ······································Ⅱ-104

<그림 6.5.3> 맹암거와 v형측구 접합(예) ·········································Ⅱ-104

<그림 6.5.4> 종배수관과 산마루측구 및 v형측구 접합(예) ·············Ⅱ-104

<그림 7.1.1> 비탈면 배수시설····························································Ⅱ-106

<그림 7.3.1> 비탈면에서 용출수 배수시설(예) ·································Ⅱ-112

<그림 7.4.1> 일반파기 배수로····························································Ⅱ-113

<그림 7.4.2> 콘크리트 등에 의한 배수구··········································Ⅱ-114

<그림 7.4.3> 프리캐스트제품에 의한 비탈어깨 배수시설·················Ⅱ-114

<그림 7.4.4> 비탈면 오목부분의 배수시설········································Ⅱ-116

<그림 7.4.5> 땅깎기부의 소단 배수로···············································Ⅱ-117

<그림 7.4.6> 지하 배수구의 배치······················································Ⅱ-119

<그림 7.4.7> 수평 배수공 설치 예·····················································Ⅱ-120

<그림 7.4.8> 비탈어깨의 지하 배수구···············································Ⅱ-121

<그림 7.4.9> 흙쌓기 재료가 서로 다른 경우의 배수시설 사례·······Ⅱ-121

<그림 8.1.1> 암거의 설계 흐름··························································Ⅱ-122

<그림 8.2.1> 흐름 형식 개념도··························································Ⅱ-124

<그림 8.2.2> 암거의 흐름 유형··························································Ⅱ-127

<그림 8.3.1> 유입부지배단면의 수리조건··········································Ⅱ-139

<그림 8.3.2> 유출부 지배단면의 수리조건(관수로일 경우) ·············Ⅱ-139

<그림 8.3.3> 암거 수리계산표(예) ·····················································Ⅱ-142

<그림 8.3.4> 유입부 손실 수두의 적용·············································Ⅱ-146

<그림 8.3.5> 원형수로의 수리특성곡선·············································Ⅱ-149

<그림 8.3.6> 암거단면의 설계계산 순서············································Ⅱ-150

<그림 8.3.7> 암거부의 흐름 제원······················································Ⅱ-152

<그림 8.3.8> 등류수심 산출도····························································Ⅱ-153

<그림 8.3.9> 한계수심산출도······························································Ⅱ-153

<그림 8.3.10> 단면 급축소에 의한 에너지 손실계수·······················Ⅱ-156

<그림 8.3.11> 암거의 수리형태··························································Ⅱ-159

<그림 9.2.1> 배수시설의 종류····························································Ⅱ-165

<그림 9.2.2> 배수 홈통의 설치 예·····················································Ⅱ-166

<그림 9.2.3> 배수 홈통 보강철근 예·················································Ⅱ-166

<그림 9.2.4> 배수홈통 구멍 예··························································Ⅱ-167

<그림 9.2.5> 배수관 설치···································································Ⅱ-168

<그림 9.2.6> 교량에서의 배수관 설치도면 예···································Ⅱ-169

<그림 9.2.7> 교량 선배수 시스템 개요도··········································Ⅱ-169

<그림 9.3.1> 배수형 방수형식 터널의 개념도 ·································Ⅱ-171

<그림 9.3.2> 외부 배수형 방수형식 터널의 개념도··························Ⅱ-171

<그림 9.3.3> 비배수형 방수형식 터널의 개념도·······························Ⅱ-171

<그림 9.3.4> 터널 배수상세(예1) ······················································Ⅱ-174

<그림 9.3.5> 터널 배수상세(예2) ······················································Ⅱ-174

<그림 9.3.6> 오·폐수 혼합 배수시스템 배수계통도 예·····················Ⅱ-176

<그림 9.3.7> 오·폐수 분리 배수시스템 배수계통도 예·····················Ⅱ-176

<그림 9.4.1> 간이 배수공···································································Ⅱ-179

<그림 9.4.2> 구형 배수공···································································Ⅱ-179

<그림 9.4.3> 옹벽의 면배수(예) ························································Ⅱ-180

<그림 9.4.4> 이중 블래킷 배수시설···················································Ⅱ-180

<그림 9.4.5> 땅깎기부 배수공····························································Ⅱ-181

<그림 9.4.6> 용출수가 있는 경우의 배수공······································Ⅱ-181

<그림 10.2.1> 토석류 차단시설 설치계획 절차································Ⅱ-184

<그림 10.2.2> 도로접도구역내의 토석류 및 부유목 예방 절차·······Ⅱ-185

<그림 10.2.3> 토석류 차단시설의 선정과정 ····································Ⅱ-185

<그림 10.2.4> 도로접도구역내의 토석류 차단시설···························Ⅱ-186

<그림 10.2.5> 도로 배수시설 인접 토석류 대책시설 형식··············Ⅱ-187

<그림 10.3.1> 토석류 위험구역 설정 사례 ······································Ⅱ-190

<그림 10.3.2> 토석류 차단시설 설계 절차·······································Ⅱ-192

<그림 11.2.1> 관리계획 수립시 작성내용·········································Ⅱ-194

<그림 11.2.2> 관리절차의 흐름도 ····················································Ⅱ-196

<그림 11.3.1> 노면 배수시설의 점검·················································Ⅱ-199

<그림 11.3.2> 비탈면 배수시설의 점검·············································Ⅱ-201

<그림 11.3.3> 비탈면 배수시설의 관리·············································Ⅱ-202

<그림 11.3.4> 관거 및 암거의 관리의 흐름······································Ⅱ-204

Ⅲ. 도시지역 도로배수시설

<그림 2.1.1> 도시부 도로 배수 개념도··················································Ⅲ-2

<그림 2.2.1> 도시부 도로의 우수 흐름··················································Ⅲ-5

<그림 2.4.1> 도시부 도로 배수시설의 구성···········································Ⅲ-7

<그림 2.4.2> 교차로에서의 배수구의 배치사례·····································Ⅲ-9

<그림 2.4.3> 교차로 선배수 설계사례··················································Ⅲ-10

<그림 2.5.1> 도심지 도로 배수계통 설계 흐름···································Ⅲ-12

<그림 2.6.1> 차집관식 연결··································································Ⅲ-13

<그림 2.6.2> 수직관식 연결··································································Ⅲ-13

<그림 3.3.1> 주거지역에서의 설계홍수량 산정···································Ⅲ-18

<그림 3.3.2> 주거지역이외의 설계홍수량 산정···································Ⅲ-18

<그림 4.1.1> 노면 배수시설의 설계 흐름············································Ⅲ-22

<그림 4.3.1> 측구흐름의 예··································································Ⅲ-24

<그림 4.3.2> 두 종류의 직선경사를 조합하는 경우의 횡단경사········Ⅲ-25

<그림 4.3.3> 도로의 선배수시설(예시) ················································Ⅲ-26

<그림 4.5.1> 집수정 유입구 사례·························································Ⅲ-27

<그림 4.5.2> 집수정 위치표시 사례·····················································Ⅲ-28

<그림 4.5.3> 종단 곡선부와 고가도로의 우수받이 배치 ···················Ⅲ-28

<그림 4.5.4> 집수정 및 우수받이의 덮개 종류 ·································Ⅲ-29

<그림 4.5.5> 스틸 그레이트 설치방향··················································Ⅲ-29

<그림 4.6.1> 중앙분리대 집수정 단면··················································Ⅲ-30

<그림 5.1.1> 관연결도의 예··································································Ⅲ-32

<그림 5.1.2> 관거의 설계 흐름····························································Ⅲ-32

<그림 5.2.1> 흐름 형식 개념도····························································Ⅲ-34

<그림 5.3.1> 단차접합···········································································Ⅲ-42

<그림 5.3.2> 접합부의 경사가 급한 경우의 접합·······························Ⅲ-42

<그림 6.2.1> 지하차도 개방형 유입구 사례········································Ⅲ-48

<그림 6.3.1> 집수정 설계사례······························································Ⅲ-49

<그림 6.3.2> 지상에 설치된 전원반·····················································Ⅲ-49

<그림 7.1.1> 비탈면 배수시설······························································Ⅲ-51

<그림 7.2.1> 일반파기 배수로······························································Ⅲ-53

<그림 7.2.2> 콘크리트 등에 의한 배수구············································Ⅲ-53

<그림 7.2.3> 프리캐스트제품에 의한 비탈어깨 배수시설···················Ⅲ-54

<그림 7.2.4> 비탈면 오목부분의 배수시설··········································Ⅲ-55

<그림 7.2.5> 땅깎기부의 소단배수로(배수경사 4% 또는 10%) ······Ⅲ-56

<그림 8.1.1> 연결형식에 따른 저류시설 모식도·································Ⅲ-59

<그림 8.3.1> 전용형 도로저류시설·······················································Ⅲ-64

<그림 8.3.2> 공극형 도로저류시설·······················································Ⅲ-65

<그림 8.3.3> 저류형 화단 개념도·························································Ⅲ-65

<그림 8.3.4> 조합하여 설치하는 경우의 표준구조······························Ⅲ-66

<그림 8.3.5> 도로침투시설 표준단면도················································Ⅲ-67

<그림 8.3.6> 도로의 우수받이 연결구조 사례·····································Ⅲ-67

<그림 9.3.1> 비탈면 배수시설의 관리··················································Ⅲ-74

<그림 9.3.2> 점검 통로·········································································Ⅲ-76

표 목 차

Ⅱ. 지방지역 도로 배수시설

<표 2.2.1> 도로 배수시설의 구성································································3

<표 3.2.1> 배수시설 계획을 위한 조사·····················································15

<표 4.2.1> 도로 배수시설물의 설계빈도···················································26

<표 4.3.1> 합리식의 유출계수····································································30

<표 4.3.2> 합리식 유출계수의 지형과 지질에 따른 보정························30

<표 4.3.3> 토지이용도에 따른 유출계수 범위*1 ······································31

<표 4.3.4> 자연유역에 대한 도달시간 공식··············································33

<표 4.4.1> 만닝의 조도계수 n값·······························································38

<표 4.4.2> 경제적인 수로 단면··································································39

<표 5.1.1> 비점오염원 관리시설 종류·····················································42

<표 5.4.1> 측구의 설계빈도·······································································50

<표 5.5.1> 스틸 그레이트 종별 기준·························································58

<표 6.2.1> 흙의 투수계수···········································································80

<표 6.2.2> 배수에 의해 지하수가 영향을 받는 수평거리 R치················82

<표 6.4.1> 지하수면의 최소경사 및 수위··················································89

<표 6.4.2> 맹암거 형식 및 적용기준·······················································91

<표 7.1.1> 비탈면 배수공의 종류와 기능···············································106

<표 8.1.1> 암거와 교량의 장․단점 비교···············································123

<표 8.2.1> 암거 흐름의 분류···································································125

<표 8.2.2> 흐름상태에 따른 수로경사의 분류 및 특성치 관계·············136

<표 8.3.1> 도로암거 수리계산시 사용되는 설명····································142

<표 8.3.2> BOX, PIPE 수리계산표의 설명··········································145

<표 8.3.3> 횡배수관 수리계산·································································161

<표 10.3.1> 조사의 종류와 실시 단계 ··················································191

<표 11.3.1> 비탈면 배수시설의 점검사항···············································202

Ⅲ. 도시지역 도로배수시설

<표 3.2.1> 도시부 도로 배수시설의 설계빈도··········································15

<표 3.3.1> 도시하천유역에 대한 도달시간 공식·······································19

<표 3.3.2> 파형강관 관경에 따른 조도계수··············································21

<표 4.1.1> 비점오염원 관리시설 종류·····················································23

<표 5.2.1> 관거흐름의 분류·······································································34

<표 5.2.2> 흐름 상태에 따른 수로경사의 분류 및 특성치 관계·············36

<표 7.1.1> 비탈면 배수공의 종류와 기능··················································51

<표 8.3.1> 시설별 설계빈도 및 규모결정 기준 (서울시의 예) ···············61

<표 8.3.2> 저감방식별 첨두저감효과 및 용량산정 기준··························62

<표 8.3.3> 홍수량 산정시 검토사항···························································62

<표 8.3.4> 도로침투시설의 종류 및 특성··················································66