표제지
요약문
목차
제1장 서론 14
제1절 연구배경 및 목적 14
제2절 연구내용 및 범위 15
제2장 이론적 배경 17
제1절 하수도시스템 현황 17
제2절 침입수/유입수(I/I) 19
1. 침입수/유입수(I/I) 개요 19
2. 침입수/유입수(I/I) 산정방법 21
제2절 강우시 하수도시스템 모델링 방법 23
1. SSOAP 23
2. XP-SWMM 25
제3절 대표 강우사상 산정 방법 27
1. 무강우 지속시간(IETD) 27
2. 강우분포방법 28
제3장 연구내용 및 방법 31
제1절 연구대상 지역 선정 및 현황 31
제2절 유량 및 수질조사 33
1. 조사지점 33
2. 조사내용 34
제3절 침입수/유입수(I/I) 산정 36
제4절 우수토실 현황 38
제5절 대표강우 산정 40
제6절 강우시 하수시스템 시뮬레이션 구축 41
제4장 연구결과 43
제1절 대표강우 선정결과 43
1. 대표강우량 산정 43
2. 대표 강우지속시간 산정 44
3. 강우분포방법 선정 46
4. 대표강우 적정성 검토 49
제2절 유량 및 수질조사 결과 50
1. 유량조사 결과 50
2. 수질조사 결과 52
제3절 침입수/유입수(I/I) 분석 결과 53
1. 청천시 침입수 산정 결과 53
2. 강우시 유입수 산정 결과 55
제4절 강우시 하수도시스템 시뮬레이션 결과 57
1. 지점별 R, T, K 산정 57
2. 시뮬레이션 검·보정 60
3. RDII 저감 시나리오 선정 및 모의 76
제5절 RDII 저감평가 및 우선순위 선정 81
1. RDII 저감 시나리오 적용결과 81
2. 경제성을 고려한 RDII 저감 시나리오 적용결과 83
3. 정비 우선순위 선정 85
제5장 결론 및 고찰 88
References 91
ABSTRACT 98
Table 2.1. XP-SWMM input data 26
Table 3.1. Sewage status in study area 32
Table 3.2. Status of monitoring points 33
Table 3.3. Overview of the monitoring survey 35
Table 3.4. Calculation method of infiltration 37
Table 3.5. Status of storm overflow chambers in the study area 39
Table 4.1. Analysis on cumulative probability rainfall 43
Table 4.2. Results of IETD analysis 45
Table 4.3. Rainfall per time frame(Huff) 47
Table 4.4. Rainfall per time frame(ABM) 47
Table 4.5. Survey results of flows per monitoring point 1 50
Table 4.6. Survey results of flows per monitoring point 2 51
Table 4.7. Survey results of water quality per monitoring point 52
Table 4.8. Results of infiltration estimation per monitoring point 54
Table 4.9. Results of inflow estimation per monitoring point 1 55
Table 4.10. Results of inflow estimation per monitoring point 2 56
Table 4.11. Rainfall events for R, T and K calculation 57
Table 4.12. Estimation results of R, T and K per point 58
Table 4.13. Accuracy verification results of R, T and K per point 59
Table 4.14. Calibration and verification results at SCR-1 point(dry weather) 62
Table 4.15. Calibration and verification results at SCR-2 point(dry weather) 63
Table 4.16. Calibration and verification results at SCR-3 point(dry weather) 65
Table 4.17. Calibration and verification results at SCR-4 point(dry weather) 66
Table 4.18. Calibration and verification results at SCR-5 point(dry weather) 68
Table 4.19. Calibration and verification results at SCR-1 point(wet weather) 70
Table 4.20. Calibration and verification results at SCR-2 point(wet weather) 71
Table 4.21. Calibration and verification results at SCR-3 point(wet weather) 73
Table 4.22. Calibration and verification results at SCR-4 point(wet weather) 74
Table 4.23. Calibration and verification results at SCR-5 point(wet weather) 75
Table 4.24. RDII reduction scenarios 77
Table 4.25. Simulation results of RDII reduction scenarios 78
Table 4.26. Application results of RDII reduction scenarios 82
Table 4.27. Application results of RDII reduction scenarios considering economic feasibility 84
Figure 1.1. Flow chart of study processes 16
Figure 2.1. Sources of Infiltration/Inflow in sewer systems 19
Figure 2.3. Infiltration/Inflow patterns in line with flow changes 20
Figure 2.4. Analysis method of infiltration 21
Figure 2.5. Analysis method of inflow 22
Figure 2.6. Overview of the SSOAP Program 23
Figure 2.7. RTK estimation method 24
Figure 2.8. Configuration of SWMM 25
Figure 2.9. Definition of IETD 27
Figure 3.1. Sewage removal system in study area 31
Figure 3.2. Study area 32
Figure 3.3. Monitoring points 34
Figure 3.4. Schematic diagram of infiltration estimation 36
Figure 3.5. Schematic diagram of inflow estimation 38
Figure 3.6. Location of storm overflow chambers 39
Figure 3.7. Flow chart of rainfall analysis 40
Figure 3.8. Linked simulations of SSOAP and SWMM 41
Figure 4.1. Analysis on cumulative probability rainfall 43
Figure 4.2. Results of variation coefficient analysis 44
Figure 4.3. Results of rainfall distribution(Huff) 46
Figure 4.4. Results of rainfall distribution(ABM) 47
Figure 4.5. Comparison results of Huff and ABM 48
Figure 4.6. Survey results of flows per monitoring point 51
Figure 4.7. Survey results of water quality per monitoring point 53
Figure 4.8. Results of infiltration estimation per monitoring point 54
Figure 4.9. Results of inflow estimation per monitoring point 56
Figure 4.10. Results of total R estimation per point 59
Figure 4.11. Accuracy verification results at SCR-1 point(dry weather) 61
Figure 4.12. Accuracy verification results at SCR-2 point(dry weather) 63
Figure 4.13. Accuracy verification results at SCR-3 point(dry weather) 64
Figure 4.14. Accuracy verification results at SCR-4 point(dry weather) 66
Figure 4.15. Accuracy verification results at SCR-5 point(dry weather) 67
Figure 4.16. Accuracy verification results at SCR-1 point(wet weather) 69
Figure 4.17. Accuracy verification results at SCR-2 point(wet weather) 71
Figure 4.18. Accuracy verification results at SCR-3 point(wet weather) 72
Figure 4.19. Accuracy verification results at SCR-4 point(wet weather) 74
Figure 4.20. Accuracy verification results at SCR-1 point(wet weather) 75
Figure 4.21. Pre-application of RDII reduction scenarios 79
Figure 4.22. Post-application of the improved branch line scenario 79
Figure 4.23. Post-application of the improved sanitary sewer system scenario 80
Figure 4.24. Post-application of the improved interceptor sewers scenario 80
Figure 4.25. Selection procedure of maintenance priority for RDII reduction 87