지침 개정에 따른 경과 조치

이 지침은 발간시점부터 적용하며, 이미 시행 중인 설계용역이

나 건설공사에 대하여는 발주기관의 장이 필요하다 인정하는

경우에 적용할 수 있습니다.

 

머 리 말

도로는 국가발전의 대동맥으로서 사회적, 경제적으로 중요한 역할을 수행하

고 있습니다. 도로 배수시설의 용량 부족에 의한 도로의 침수 또는 유실은 경

제적, 인적 피해를 유발시키며, 특히 도시부 도로의 도로침수는 도시의 기능을 정

지시킴으로서 심각한 사회문제를 발생시키기도 합니다.

이에 따라, 우리 부에서는 지방부와 도시부 도로의 배수불량으로 인한 침수의

피해를 최소화하기 위하여 지역적 배수특성을 반영하여 효율적인 도로 배수시설

을 설계할 수 있도록 하는 “도로 배수시설 설계 및 관리지침”을 개정하게 되었

습니다.

동 지침에서는 최근의 강우특성과 설계빈도 그리고 강우강도지속시간을 강화하

여 배수시설 용량을 확보하도록 하였고, 도로 노면배수의 효율을 높이기 위한 방

안으로 도로측면 부지전체를 이용하여 배수토록 하는 선배수 설계와 배수계통 설

계 개념을 도입하여 기존 하수도시설과 효율적으로 연계처리 할 수 있도록 하였

습니다. 특히, 도시화로 인하여 발생되는 유출수를 억제하여 도로침수를 일시 방

지하기 위해 도로하부 공간에 도로저류시설을 도입함으로써 도시지역의 수해 예

방을 도모하는 방안도 마련하였습니다.

앞으로도 개정이 필요한 부분은 지속적으로 보완할 예정이오니 적용하시는 실

무 기술자들의 계속적인 관심과 조언을 부탁드립니다. 마지막으로 본 지침을 마

련하는데 참여하신 한국건설기술연구원 연구진, 자문 및 평가위원 그리고 관계

공무원 여러분의 노고에 깊은 감사를 드립니다.

2019 년 9 월

국토교통부 도로국장

김 용 석

 

목 차

Ⅰ. 총 칙

1. 목 적 ··························································· Ⅰ-1

2. 적용범위 ························································ Ⅰ-2

3. 용어정의 ························································ Ⅰ-4

Ⅱ. 지방지역 도로배수시설

1. 개 요 ··························································· Ⅱ-1

2. 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

3. 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

4. 도로 배수의 수문설계 ············································Ⅱ-25

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

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

4.3 설계홍수량·····················································Ⅱ-26

4.3.1 설계홍수량 산정 ··············································Ⅱ-26

4.3.2 강우강도····················································Ⅱ-30

4.3.3 유출계수····················································Ⅱ-31

4.3.4 도달시간····················································Ⅱ-33

4.4 개수로························································ Ⅱ-35

4.4.1 개수로 흐름상태 ············································· Ⅱ-35

4.4.2 유량과 유속 ················································· Ⅱ-38

4.4.3 경제적인 수로 단면 ·········································· Ⅱ-40

5. 노면 배수 ······················································ Ⅱ-41

5.1 일반사항······················································ Ⅱ-41

5.2 노면 배수의 수리해석·········································· Ⅱ-44

5.3 도로의 경사··················································· Ⅱ-48

5.4 측구·························································· Ⅱ-49

5.4.1 측구의 수리해석 ············································· Ⅱ-49

5.4.2 측구의 설계빈도 ············································· Ⅱ-51

5.4.3 측구의 종류 ················································· Ⅱ-52

5.5 집수정························································ Ⅱ-56

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

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

5.6.2 흙쌓기부 배수구 ············································· Ⅱ-61

5.6.3 흙쌓기부 배수구 간격 결정··································· Ⅱ-62

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

5.7.1 땅깎기부 집수정 설치위치 결정································ Ⅱ-64

5.7.2 땅깎기부 집수정 ············································· Ⅱ-65

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

5.7.4 땅깎기부 배수구 ··············································Ⅱ-67

5.7.5 종배수관 및 횡배수관 ·········································Ⅱ-68

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

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

5.8.2 종배수관 및 횡배수관 ·········································Ⅱ-71

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

5.10 도로 인접부의 배수············································Ⅱ-72

5.11 배수구조물 접합부 처리········································Ⅱ-73

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

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

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

6. 지하배수 ························································Ⅱ-77

6.1 일반사항·······················································Ⅱ-77

6.2. 지하 배수의 수리···············································Ⅱ-78

6.2.1 지하 배수시설의 조사 ·········································Ⅱ-78

6.2.2 지하 배수의 수리해석 ·········································Ⅱ-80

6.3 지하배수시설의 종류············································Ⅱ-84

6.3.1 종방향 배수시설 ··············································Ⅱ-84

6.3.2 횡방향 및 수평 배수시설······································Ⅱ-85

6.3.3 배수층······················································Ⅱ-86

6.4 지하 배수의 수리해석···········································Ⅱ-86

6.4.1 지하 배수구의 기능 ···········································Ⅱ-86

6.4.2 지하 배수구의 깊이 ···········································Ⅱ-87

6.4.3 지하 배수구의 구조 ···········································Ⅱ-88

6.4.4 길어깨의 지하배수구 ··········································Ⅱ-92

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

6.4.6 차단 배수층 ··················································Ⅱ-96

6.4.7 토목섬유를 사용한 포장배수 ···································Ⅱ-96

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-103

6.5.4 지하 배수구조물 접합부 처리·································Ⅱ-104

7. 비탈면 배수 ····················································Ⅱ-106

7.1 일반사항······················································Ⅱ-106

7.2 비탈면 배수계획···············································Ⅱ-108

7.2.1 땅깎기 비탈면의 배수계획 ····································Ⅱ-109

7.2.2 흙쌓기 비탈면의 배수계획 ····································Ⅱ-110

7.3 비탈면에 미치는 물의 작용······································Ⅱ-111

7.3.1 비탈면 배수와 비탈면의 안정·································Ⅱ-111

7.3.2 비탈면을 유하하는 우수에 의한 침식 ···························Ⅱ-111

7.3.3 비탈면 용출수 ···············································Ⅱ-112

7.4 비탈면 배수시설의 설계········································Ⅱ-113

7.4.1 비탈어깨 배수시설 및 산마루 배수구 ·························· Ⅱ-114

7.4.2 배수구···················································· Ⅱ-116

7.4.3 소단 배수시설 ·············································· Ⅱ-118

7.4.4 비탈끝 배수시설 ············································ Ⅱ-119

7.4.5 비탈면에서 용출수 등의 처리································ Ⅱ-119

8. 횡단 배수 ····················································· Ⅱ-123

8.1 일반사항····················································· Ⅱ-123

8.2 도로 암거의 수리············································· Ⅱ-124

8.2.1 도로 암거의 흐름 분류······································ Ⅱ-124

8.2.2 도로 암거의 흐름 형상······································ Ⅱ-126

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-147

8.4 도로 암거의 설계 고려사항····································· Ⅱ-163

9. 구조물 배수 ··················································· Ⅱ-165

9.1 일반사항····················································· Ⅱ-165

9.2 교량·고가구조의 배수·········································· Ⅱ-165

9.2.1 배수시설의 종류 ············································ Ⅱ-165

9.2.2 배수홈통·················································· Ⅱ-166

9.2.3 배수관···················································· Ⅱ-168

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

10. 토석류 대책시설 ··············································· Ⅱ-183

10.1 일반사항···················································· Ⅱ-183

10.2 토석류 대책시설의 계획······································ Ⅱ-184

10.2.1 토석류 대책시설의 설치 계획 ······························· Ⅱ-184

10.2.2 토석류 흐름제어 방법 ······································ Ⅱ-187

10.2.3 토석류 대책시설의 종류 ···································· Ⅱ-188

10.3 토석류 조사 및 설계········································· Ⅱ-189

10.3.1 조사 ····················································· Ⅱ-189

10.3.2 토석류 대책시설 설계 ······································ Ⅱ-192

11. 도로 배수시설의 관리 ·········································· Ⅱ-194

11.1 일반사항················································ Ⅱ-194

11.2 도로 배수시설의 관리 계획································ Ⅱ-194

11.2.1 계획 ····················································· Ⅱ-194

11.2.2 관리절차 ················································ Ⅱ-196

11.2.3 점검 ····················································· Ⅱ-197

11.3 도로 배수시설물별 관리 및 점검······························· Ⅱ-199

11.3.1 노면 배수시설············································· Ⅱ-199

11.3.2 지하 배수시설············································· Ⅱ-200

11.3.3 비탈면 배수시설··········································· Ⅱ-202

11.3.4 횡단 배수시설············································· Ⅱ-204

11.3.5 구조물 배수시설··········································· Ⅱ-206

11.3.6 토석류 대책시설··········································· Ⅱ-207

Ⅲ. 도시지역 도로배수시설

1. 개 요 ··························································· Ⅲ-1

2. 배수 계획 및 조사 ················································ Ⅲ-2

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

2.2 도시부 도로배수 계획············································ Ⅲ-3

2.3 도시부 도로배수 조사············································ Ⅲ-6

2.4 도시부 도로배수 시설의 구성····································· Ⅲ-7

2.5 도시부 도로배수 계통 계획······································ Ⅲ-11

2.6 도시부 도로 배수시설의 하수도시설과의 연계 처리················· Ⅲ-13

3. 도로 배수의 수문 설계 ··········································· Ⅲ-14

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

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

3.3 설계홍수량···················································· Ⅲ-15

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

3.3.2 강우강도···················································· Ⅲ-20

3.3.3 도달시간의 산정 ············································· Ⅲ-22

3.3.4 인접지역 배수의 유역 산정··································· Ⅲ-23

3.4 개수로························································ Ⅲ-23

3.4.1 개수로 흐름 ················································· Ⅲ-23

3.4.2 유속 및 유량 ················································ Ⅲ-26

3.4.3 경제적인 수로단면 ··········································· Ⅲ-27

3.5 관수로························································ Ⅲ-28

4. 노면 배수 ······················································ Ⅲ-29

4.1 일반사항······················································ Ⅲ-29

4.2 노면 배수 수리해석············································ Ⅲ-30

4.3 측구·························································· Ⅲ-34

4.4 선배수 시설··················································· Ⅲ-36

4.5 집수정 및 우수받이············································ Ⅲ-37

4.6 중앙분리대 배수··············································· Ⅲ-41

5. 종단 및 횡단배수 ················································ Ⅲ-44

5.1 일반사항······················································ Ⅲ-44

5.2 관거 수리설계················································· Ⅲ-46

5.2.1 관거내 흐름의 분류 ·········································· Ⅲ-46

5.2.2 관거내 흐름의 수리특성 ······································ Ⅲ-47

5.2.3 도로 관거의 수리설계 ········································ Ⅲ-59

5.2.4 도로 관거의 수리설계 고려사항································ Ⅲ-50

5.3 배수관거 및 맨홀·············································· Ⅲ-51

5.3.1 단면 및 최소관경 ············································ Ⅲ-51

5.3.2 도로 배수관거의 유속과 경사································· Ⅲ-52

5.3.3 도로 배수관거의 매설위치 및 깊이 ····························· Ⅲ-52

5.3.4 도로 배수관거의 접합 ········································ Ⅲ-54

5.3.5 맨홀······················································· Ⅲ-59

6. 도시부 지하차도 배수 ············································ Ⅲ-60

6.1 일반사항······················································ Ⅲ-60

6.2 지하차도 배수시설 설계········································· Ⅲ-60

6.2.1 집수유역 면적 산정 ·········································· Ⅲ-60

6.2.2 우수 유입량 산정 ············································ Ⅲ-61

6.2.3 배수측구 단면 ··············································· Ⅲ-62

6.2.4 횡단 배수관 ················································· Ⅲ-62

6.2.5 집수정····················································· Ⅲ-63

6.3 펌프시설······················································ Ⅲ-64

7. 비탈면 배수 및 토석류 대책시설 ··································· Ⅲ-65

7.1 일반사항······················································ Ⅲ-65

7.2 비탈면 배수시설··············································· Ⅲ-67

7.2.1 비탈어깨 배수시설 ··········································· Ⅲ-67

7.2.2 배수구····················································· Ⅲ-70

7.2.3 소단배수시설················································ Ⅲ-72

7.2.4 비탈끝 배수시설 ············································· Ⅲ-72

7.3 토석류 대책시설··············································· Ⅲ-73

7.3.1 토석류 대책시설 계획 ········································ Ⅲ-74

7.3.2 토석류 대책시설 종류 및 흐름제어 ····························· Ⅲ-76

8. 도로저류시설 ···················································· Ⅲ-77

8.1 일반사항······················································ Ⅲ-77

8.2 도로저류시설의 계획 및 조사···································· Ⅲ-78

8.2.1 도로저류시설의 계획 ········································· Ⅲ-78

8.2.2 도로저류시설 조사 ··········································· Ⅲ-79

8.3 도로저류시설의 설계··········································· Ⅲ-80

8.3.1 도로저류시설의 설계빈도 및 홍수량 산정 ······················· Ⅲ-80

8.3.2 도로저류시설의 배수능력 결정 ································· Ⅲ-82

8.3.3 도로저류시설 종류 ··········································· Ⅲ-82

8.3.4 도로침투시설················································ Ⅲ-84

9. 도시부 도로배수 관리 ············································ Ⅲ-87

9.1 일반사항······················································ Ⅲ-87

9.2 도시부 도로배수 시설의 관리 계획······························· Ⅲ-90

9.3 도시부 도로배수 시설 관리······································ Ⅲ-91

9.3.1 노면 배수시설 ················································ Ⅲ-91

9.3.2 횡단 배수시설 ················································ Ⅲ-91

9.3.3 지하 배수시설 ················································ Ⅲ-92

9.3.4 비탈면 배수시설 ·············································· Ⅲ-92

9.3.5 토석류 대책시설 ·············································· Ⅲ-93

9.3.6 도로저류시설················································ Ⅲ-94

9.3.7 지하차도 배수시설 ············································ Ⅲ-94

참고문헌·························································· Ⅲ-97

부 록

부록Ⅰ. 관측지점 및 전국 주요지점의 확률 강우량···················· 부록-1

부록Ⅱ. 전국 주요지점의 강우강도-지속기간-빈도곡선··············· 부록-75

부록Ⅲ. 수리도표··············································· 부록-113

그 림 목 차

□ 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 절취의 조사 깊이 ······································Ⅱ-17

<그림 4.3.1> 홍수량 자료의 직접빈도해석 흐름절차 ························Ⅱ-28

<그림 4.3.2> 강우-유출에 의한 홍수량 산정 흐름도 ························Ⅱ-29

<그림 4.3.3> 확률강우량도 예(서울) ······································Ⅱ-30

<그림 4.3.4> 수로 및 하천에서 유입/유하시간 ·····························Ⅱ-33

<그림 4.3.5> 횡배수 암거에서 유입/유하시간 ······························Ⅱ-33

<그림 4.4.1> 비에너지와 수심의 관계 ·····································Ⅱ-36

<그림 5.1.1> 노면 배수의 종류 ··········································Ⅱ-42

<그림 5.1.2> 노면 배수시설의 설계 흐름 ··································Ⅱ-42

<그림 5.1.3> 곡선 도로에 있어서 노면수의 집중 ···························Ⅱ-43

<그림 5.2.1> 등류 흐름 설계 절차 ········································Ⅱ-44

<그림 5.2.2> 부등류 흐름 설계 절차 ······································Ⅱ-45

<그림 5.2.3> 배수로로 유입되는 유량의 형태 ······························Ⅱ-46

<그림 5.2.4> 배수로의 흐름 형태 ·········································Ⅱ-46

<그림 5.4.1> 측구흐름의 예 ·············································Ⅱ-50

<그림 5.4.2> 두 종류의 직선경사를 조합하는 경우의 횡단경사 ···············Ⅱ-51

<그림 5.4.3> 토사측구의 종류 ···········································Ⅱ-52

<그림 5.4.4> V형 측구 ··················································Ⅱ-53

<그림 5.4.5> 산마루 측구 ···············································Ⅱ-53

<그림 5.4.6> L형 측구 형식 ·············································Ⅱ-54

<그림 5.4.7> U형 측구 ··················································Ⅱ-55

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

<그림 5.5.2> 종단 곡선부와 고가도로의 우수받이 배치 ······················Ⅱ-57

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

<그림 5.5.4> 스틸 그레이트 설치방향 ····································Ⅱ-58

<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(편도 2차로) ···· Ⅱ-63

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

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

<그림 5.8.1> 중앙분리대 배수시설 예 ·····································Ⅱ-69

<그림 5.8.2> 중앙분리대 집수정 간격 결정을 위한 집수폭 개념도(편도 2차로) ·Ⅱ-70

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

<그림 5.9.1> 선배수개념도 ··············································Ⅱ-72

<그림 5.9.2> 측구부의 선배수 예 ·········································Ⅱ-72

<그림 5.9.3> 선배수구조물 예 ···········································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(자연수로가 있는 경우) ·········Ⅱ-74

<그림 5.11.4> 쌓기부 배수구와 V형측구 접합 ······························Ⅱ-74

<그림 5.12.1> 월류에 의한 도로 성토면 유실방지 대책 ·····················Ⅱ-75

<그림 5.12.2> 중앙분리대에 통과집수정 설치사례 ··························Ⅱ-75

<그림 6.1.1> 지하 배수시설의 분류 ·······································Ⅱ-77

<그림 6.2.2> 불투수층의 경사가 큰 경우 ··································Ⅱ-80

<그림 6.2.3> 불투수층의 경사가 완만한 경우 ······························Ⅱ-81

<그림 6.2.4> 불투수층이 깊은 경우 ·······································Ⅱ-82

<그림 6.2.5> 유선망의 예 ···············································Ⅱ-83

<그림 6.3.1> 종방향 차단 배수 ··········································Ⅱ-84

<그림 6.3.2> 지하수 강하를 위한 대칭형 종방향 배수 ·······················Ⅱ-84

<그림 6.3.3> 포장층내 침투수 배제를 위한 종방향 배수 ·····················Ⅱ-85

<그림 6.4.1> 지하 배수구의 깊이 산정 예 ·································Ⅱ-88

<그림 6.4.2> 형식별 맹암거 상세도 ·······································Ⅱ-91

<그림 6.4.3> 양측의 길어깨에 설치된 지하 배수구 ·························Ⅱ-92

<그림 6.4.4> 편측에 설치된 지하 배수구 ··································Ⅱ-92

<그림 6.4.5> 중앙분리대가 있는 경우의 지하 배수구 ·······················Ⅱ-93

<그림 6.4.6> 지하 배수구의 설치 예 ······································Ⅱ-94

<그림 6.4.7> 횡단 지하 배수구 ··········································Ⅱ-95

<그림 6.4.8> 횡단 지하 배수구의 설치방향과 단면 사례 ·····················Ⅱ-95

<그림 6.4.9> 차단배수층내에 매설된 집수관 ·······························Ⅱ-96

<그림 6.4.10> 포장구조물에 적용되는 보강용 토목섬유의 각종 사용방법 ······Ⅱ-97

<그림 6.4.11> 중앙분리대의 지하 배수구 ··································Ⅱ-98

<그림 6.4.12> 중앙분리대 양쪽 높이가 다를 경우 ·························Ⅱ-99

<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-105

<그림 6.5.4> 종배수관과 산마루측구 및 v형측구 접합 예 ··················Ⅱ-105

<그림 7.1.1> 비탈면 배수시설 ··········································Ⅱ-107

<그림 7.3.1> 비탈면에서 용출수 배수시설 예 ·····························Ⅱ-113

<그림 7.4.1> 일반파기 배수로 ··········································Ⅱ-115

<그림 7.4.2> 콘크리트 등에 의한 배수구 ·································Ⅱ-115

<그림 7.4.3> 프리캐스트제품에 의한 비탈어깨 배수시설 ····················Ⅱ-116

<그림 7.4.4> 비탈면 오목부분의 배수시설 ································Ⅱ-117

<그림 7.4.5> 땅깎기부의 소단배수로 ·····································Ⅱ-118

<그림 7.4.6> 지하 배수구의 배치 ·······································Ⅱ-120

<그림 7.4.7> 수평 배수공 설치 예 ······································Ⅱ-121

<그림 7.4.8> 비탈어깨의 지하 배수구 ····································Ⅱ-122

<그림 7.4.9> 흙쌓기 재료가 서로 다른 경우의 배수시설 사례 ···············Ⅱ-122

<그림 8.1.1> 암거의 설계 흐름 ·········································Ⅱ-123

<그림 8.2.1> 흐름 형식 개념도 ·········································Ⅱ-125

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

<그림 8.3.1> 유입부 지배단면의 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-147

<그림 8.3.5> 원형수로의 수리특성곡선 ···································Ⅱ-150

<그림 8.3.6> 암거단면의 설계계산 순서 ··································Ⅱ-151

<그림 8.3.7> 암거부의 흐름 제원 ·······································Ⅱ-153

<그림 8.3.8> 등류수심 산출도 ··········································Ⅱ-154

<그림 8.3.9> 한계수심 산출도 ··········································Ⅱ-154

<그림 8.3.10> 단면 급축소에 의한 에너지 손실계수 ·······················Ⅱ-157

<그림 8.3.11> 암거의 수리형태(토사퇴적 및 부유물 및 퇴적토사를 고려한 경우)Ⅱ-160

<그림 9.2.1> 배수시설의 종류 ··········································Ⅱ-166

<그림 9.2.2> 배수 홈통의 설치 예 ······································Ⅱ-167

<그림 9.2.3> 배수 홈통 보강철근 예 ·····································Ⅱ-167

<그림 9.2.4> 배수홈통 구멍 예 ·········································Ⅱ-168

<그림 9.2.5> 배수관 설치 ··············································Ⅱ-169

<그림 9.2.6> 교량에서의 배수관 설치도면 예 ·····························Ⅱ-170

<그림 9.2.7> 교량 선배수 시스템 개요도 ·································Ⅱ-170

<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-172

<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-177

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

<그림 9.4.2> 구형 배수공 ··············································Ⅱ-180

<그림 9.4.3> 옹벽의 면배수 예 ·········································Ⅱ-181

<그림 9.4.4> 이중 블래킷 배수시설 ······································Ⅱ-181

<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-185

<그림 10.2.2> 도로접도구역내의 토석류 및 부유목 예방 절차 ···············Ⅱ-186

<그림 10.2.3> 토석류 차단시설의 선정과정 ······························Ⅱ-186

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

<그림 10.2.5> 도로 배수시설 인접 토석류 대책시설 형식 ··················Ⅱ-188

<그림 10.3.1> 토석류 위험구역 설정 사례 ·······························Ⅱ-191

<그림 10.3.2> 토석류 차단시설 설계 절차 ································Ⅱ-193

<그림 11.2.1> 관리계획 수립시 작성내용 ·································Ⅱ-195

<그림 11.2.2> 관리절차의 흐름도 ······································Ⅱ-197

<그림 11.3.1> 노면 배수시설의 점검 ····································Ⅱ-200

<그림 11.3.2> 비탈면 배수시설의 점검 ···································Ⅱ-202

<그림 11.3.3> 비탈면 배수시설의 관리 ···································Ⅱ-204

<그림 11.3.4> 관거 및 암거의 관리의 흐름 ·······························Ⅱ-205

□ 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> 주거지역 이외(산업단지 및 구릉지등)에서의 설계홍수량 산정 ····Ⅲ-18

<그림 3.3.3> 확률강우량도 예(서울) ······································Ⅲ-21

<그림 3.4.1> 비에너지와 수심의 관계 ·····································Ⅲ-24

<그림 4.1.1> 노면 배수시설의 설계 흐름 ··································Ⅲ-29

<그림 4.2.1> 등류 흐름 설계 절차 ········································Ⅲ-31

<그림 4.2.2> 부등류 흐름 설계 절차 ······································Ⅲ-31

<그림 4.2.3> 배수로로 유입되는 유량의 형태 ······························Ⅲ-32

<그림 4.2.4> 배수로의 흐름 형태 ·········································Ⅲ-32

<그림 4.3.1> 측구흐름의 예 ·············································Ⅲ-35

<그림 4.3.2> 두 종류의 직선경사를 조합하는 경우의 횡단경사 ···············Ⅲ-36

<그림 4.4.1> 측구부의 선배수 ···········································Ⅲ-36

<그림 4.4.2> 선배수구조물 ··············································Ⅲ-36

<그림 4.5.1> 집수정 유입구 사례 ·········································Ⅲ-37

<그림 4.5.2> 종단 곡선부와 고가도로의 우수받이 배치 ······················Ⅲ-38

<그림 4.5.3> 집수정 및 우수받이의 덮개 종류 ····························Ⅲ-38

<그림 4.5.4> 스틸 그레이트 설치방향 ····································Ⅲ-39

<그림 4.6.1> 중앙분리대 집수정 단면 ·····································Ⅲ-41

<그림 4.6.2> 중앙분리대 집수정 간격 결정을 위한 집수폭 개념도(편도 2차로) ·Ⅲ-42

<그림 4.6.3> 중앙분리대 집수정 간격의 보정계수(방호벽형 중앙분리대) ······Ⅲ-43

<그림 5.1.1> 관연결도의 예 ·············································Ⅲ-45

<그림 5.1.2> 관거의 설계 흐름 ··········································Ⅲ-45

<그림 5.2.1> 흐름 형식 개념도 ··········································Ⅲ-47

<그림 5.3.1> 계획표준도의 참고 예(분류식1) ······························Ⅲ-53

<그림 5.3.2> 계획표준도의 참고 예(분류식2) ······························Ⅲ-53

<그림 5.3.3> 계획표준도의 참고 예(합류식1) ······························Ⅲ-54

<그림 5.3.4> 계획표준도의 참고 예(합류식2) ······························Ⅲ-54

<그림 5.3.5> 관거의 접합 ···············································Ⅲ-56

<그림 5.3.6> 단차접합 ··················································Ⅲ-57

<그림 5.3.7> 접합부의 경사가 급한 경우의 접합 ···························Ⅲ-57

<그림 5.3.8> 관거의 합류 ···············································Ⅲ-58

<그림 5.3.9> 관거의 곡절 ···············································Ⅲ-58

<그림 6.2.1> 집수정 설계사례 ···········································Ⅲ-63

<그림 6.3.1> 지상에 설치된 전원반 ·······································Ⅲ-64

<그림 7.1.1> 비탈면 배수시설 ···········································Ⅲ-66

<그림 7.2.1> 일반파기 배수로 ···········································Ⅲ-68

<그림 7.2.2> 콘크리트 등에 의한 배수구 ··································Ⅲ-69

<그림 7.2.3> 프리캐스트제품에 의한 비탈어깨 배수시설 ·····················Ⅲ-69

<그림 7.2.4> 비탈면 오목부분의 배수시설 ·································Ⅲ-70

<그림 7.2.5> 땅깎기부의 소단배수로(배수경사 4% 또는 10%) ···············Ⅲ-72

<그림 7.3.1> 토석류 대책시설 설치 절차 ··································Ⅲ-75

<그림 7.3.2> 토석류 대책시설의 선정과정 ································Ⅲ-75

<그림 7.3.3> 도로 배수시설 인접 토석류 대책시설 형식 ·····················Ⅲ-76

<그림 8.1.1> 연결형식에 따른 저류시설 모식도 ····························Ⅲ-78

<그림 8.3.1> 전용형 도로저류시설 ········································Ⅲ-83

<그림 8.3.2> 공극형 도로저류시설 ········································Ⅲ-84

<그림 8.3.3> 저류형 화단 개념도 ·········································Ⅲ-84

<그림 8.3.4> 조합하여 설치하는 경우의 표준구조 ··························Ⅲ-85

<그림 8.3.5> 도로침투시설 표준 단면도 ···································Ⅲ-86

<그림 8.3.6> 도로의 우수받이연결 구조 사례 ······························Ⅲ-86

<그림 9.3.1> 비탈면 배수시설의 관리 ·····································Ⅲ-93

표 목 차

□ 지방지역 도로배수시설

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

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

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

<표 4.3.1> 합리식의 유출계수 ···········································Ⅱ-32

<표 4.3.2> 토지이용도에 따른 유출계수 범위 ······························Ⅱ-32

<표 4.3.3> 합리식 유출계수의 지형과 지질에 따른 보정(Stephenson, 1981) · Ⅱ-33

<표 4.3.4> 자연유역에 대한 도달시간 공식 ································Ⅱ-34

<표 4.4.1> 만닝의 조도계수 n값 ·········································Ⅱ-39

<표 4.4.2> 경제적인 수로단면 ···········································Ⅱ-40

<표 5.1.1> 비점오염원 관리시설 종류 ·····································Ⅱ-43

<표 5.4.1> 측구의 설계빈도 ·············································Ⅱ-51

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

<표 6.2.1> 흙의 투수계수(Terzaghi & Peck) ······························Ⅱ-79

<표 6.2.2> 배수에 의해 지하수가 영향을 받는 수평거리 R치 ·················Ⅱ-81

<표 6.4.1> 지하수면의 최소경사 및 수위 ··································Ⅱ-88

<표 6.4.2> 맹암거 형식 및 적용기준 ······································Ⅱ-90

<표 7.1.1> 비탈면 배수공의 종류와 기능 ·································Ⅱ-107

<표 8.1.1> 암거와 교량의 장·단점 비교 ··································Ⅱ-124

<표 8.2.1> 암거흐름의 분류 ············································Ⅱ-125

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

<표 8.3.1> 도로암거 수리계산시 사용되는 설명 ···························Ⅱ-143

<표 8.3.2> BOX, PIPE 수리계산표의 설명 ································Ⅱ-146

<표 8.3.3> 횡배수관 수리계산 ··········································Ⅱ-162

<표 10.3.1> 조사의 종류와 실시 단계 ···································Ⅱ-192

<표 11.3.1> 비탈면 배수시설의 점검사항 ·································Ⅱ-203

□ 도시지역 도로배수시설

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

<표 3.3.1> 합리식 유출계수의 지형과 지질에 따른 보정(Stephenson, 1981) · Ⅲ-19

<표 3.3.2> 토지이용도에 따른 유출계수 범위 ······························Ⅲ-20

<표 3.3.3> 도시하천유역에 대한 도달시간 공식 ····························Ⅲ-22

<표 3.4.1> 만닝의 조도계수 n값 ·········································Ⅲ-26

<표 3.4.2> 파형강관 관경에 따른 조도계수 ································Ⅲ-27

<표 3.4.3> 경제적인 수로단면 ···········································Ⅲ-28

<표 4.1.1> 비점오염원 관리시설 종류 ·····································Ⅲ-30

<표 4.5.1> 스틸그레이트 종별 기준 ·······································Ⅲ-39

<표 5.2.1> 관거흐름의 분류 ·············································Ⅲ-47

<표 5.2.2> 흐름 상태에 따른 수로경사의 분류 및 특성치 관계 ···············Ⅲ-49

<표 5.3.1> 관경별 맨홀의 최대간격 ·······································Ⅲ-59

<표 7.1.1> 비탈면 배수공의 종류와 기능 ··································Ⅲ-66

<표 8.3.1> 시설별 설계빈도 및 규모결정 기준(서울시의 예) ·················Ⅲ-80

<표 8.3.2> 저감방식별 첨두저감효과 및 용량산정 기준 ······················Ⅲ-81

<표 8.3.3> 홍수량 산정시 검토사항 ·······································Ⅲ-81

<표 8.3.4> 도로침투시설의 종류 및 특성 ··································Ⅲ-85