표제지
국문초록
목차
I. 서론 16
1-1. 연구 배경 및 목적 16
1-2. 연구 내용 및 방법 17
1-3. 연구 동향 18
II. 다목적댐 홍수유입량 산정현황 22
2-1. 저수지 유입량 산정현황 22
2-1-1. 저수지 수위계측 현황 23
2-1-2. 저수지 증발량 산정 32
2-1-3. 유역 강우량 산정 33
2-1-4. 지표면 유출량(저수지 유입량) 산정 34
2-1-5. 손실성분 산정 34
2-1-6. 물수지 방정식을 이용한 홍수유입량 산정 현황 36
2-2. 기존 홍수유입량 산정의 문제점 38
2-2-1. 수위계측 문제점 39
2-2-2. 홍수유입량 산정의 문제점 40
2-2-3. 남강댐 관측 유입량의 불확실성 41
III. 남강댐유역 강우관측 현황 및 대상호우 선정 44
3-1. 남강댐의 유역 현황 44
3-1-1. 평균경사 및 평균고도 44
3-1-2. 토양 45
3-1-3. 토지이용 현황 46
3-2. 남강댐 유입량 관측현황 49
3-2-1. 남강댐유역 유입량관측 현황 49
3-2-2. 남강댐의 운영 특성 59
IV. 남강댐유역 호우 및 유출 특성분석 62
4-1. 남강댐 운영현황 62
4-1-1. 남강댐 관측 유입량 및 방류현황 62
4-2. 최근 주요 호우사상 분석 67
4-2-1. 최근 주요 호우현황 67
4-2-2. 관측 결측치 보완 69
4-2-3. Event별 수문관측 현황 70
4-3. Event-관측소별 유출률 분석 102
V. 분포형 강우-유출 모형을 이용한 홍수유입량 산정 104
5-1. 개요 104
5-2. 기존 모형의 특징 및 분류 104
5-2-1. 집중형 모형 105
5-2-2. 분포형 모형 106
5-3. Vflo™모형의 개요 109
5-3-1. 모형의 개요 109
5-4. 적용대상호우 및 관측수위자료 111
5-5. 모형의 구성 및 검정 112
5-5-1. 모형의 구성 112
5-5-2. 모형의 매개변수 보정 및 적용 113
5-6. 남강댐 유입 홍수량 산정결과 및 분석 119
5-6-1. 상류 경계조건 검증 119
5-6-2. 경계조건 시나리오 구성 127
5-6-3. 경계조건 시나리오별 댐지점 유입량 산정 128
VI. 남강댐 홍수유입량의 불확실성 평가 150
6-1. 홍수유입량의 불확실성 평가 150
6-1-1. 오차 분석에 의한 적합성 평가 150
6-1-2. 유출률 분석에 의한 적합성 평가 152
6-2. 비 홍수량을 통한 홍수유입량 검증 153
VII. 결론 및 제언 162
참고문헌 164
Abstract 168
Table 2.1. Comparison of characteristics of reservoir water gauges 30
Table 2.2. Status of installation of water gauges in reservoirs of existing dams 31
Table 2.3. Namgang Dam inflow uncertainty 41
Table 2.4. Event·Runoff ratio of Namgang Dam 42
Table 3.1. Mean slope and Mean altitude 44
Table 3.2. Hydrological Soil group composition ratio 45
Table 3.3. Land use status 47
Table 3.4. Namgang Dam Basin Rainfall Observatory 50
Table 3.5. Namgang Dam basin observatory rating curve 56
Table 3.6. Namgang Dam Water-capacity curve 57
Table 3.7. Namgang Dam spillway discharge 57
Table 3.8. Namgang Dam sluice gate discharge 58
Table 3.9. Effective reservoir ratio and water resource use ratio 60
Table 4.1. Namgang Dam Operation status 63
Table 4.2. Total discharge vs Discharge 63
Table 4.3. Namgang Dam discharge operation status 66
Table 4.4. Analysis target Rainfall event 67
Table 4.5. Event Missing Status 68
Table 4.6. Hydrological observation of Event 1 70
Table 4.7. Hydrological observation of Event 2 72
Table 4.8. Hydrological observation of Event 3 74
Table 4.9. Hydrological observation of Event 4-1 76
Table 4.10. Hydrological observation of Event 4-2 78
Table 4.11. Hydrological observation of Event 5-1 80
Table 4.12. Hydrological observation of Event 5-2 82
Table 4.13. Hydrological observation of Event 6 84
Table 4.14. Hydrological observation of Event 7 86
Table 4.15. Hydrological observation of Event 8 88
Table 4.16. Hydrological observation of Event 9 90
Table 4.17. Hydrological observation of Event 10 92
Table 4.18. Hydrological observation of Event 11 94
Table 4.19. Hydrological observation of Event 12 96
Table 4.20. Hydrological observation of Event 13 98
Table 4.21. Hydrological observation of Event 14 100
Table 4.22. Event·Runoff ratio of observation station 102
Table 5.1. Classification of model 104
Table 5.2. Flood routing Method of distributed model 108
Table 5.3. Function comparison of distributed model 108
Table 5.4. Green and Ampt parameters estimated from Soil texture classification(Viex. 2004) 110
Table 5.5. Rainfall Events for Model Calibration and Verification 111
Table 5.6. Roughness of Namgang Watershed 114
Table 5.7. Apply parameters estimated from Soil texture classification 115
Table 5.8. Manning's Roughness 116
Table 5.9. Hydraulic Conductivity 117
Table 5.10. Wetting Front Suction Head 117
Table 5.11. Effective Porosity 118
Table 5.12. Soil Depth 118
Table 5.13. Boundary condition verification for sancheong subbasin 120
Table 5.14. Inflow analysis Result for Sancheong subbasin 122
Table 5.15. Boundary condition verification for Shinan subbasin 122
Table 5.16. Inflow analysis Result for Shinan subbasin 124
Table 5.17. Boundary condition verification for Changchon subbasin 125
Table 5.18. Inflow analysis Result for Changchon subbasin 126
Table 5.19. Boundary condition 127
Table 5.20. Namgang Dam Inflow analysis Result for scenario UBC-1P_sa 130
Table 5.21. Namgang Dam Inflow analysis Result for scenario UBC-1P_ch 133
Table 5.22. Namgang Dam Inflow analysis Result for scenario UBC-1P_sh 136
Table 5.23. Namgang Dam Inflow analysis Result for scenario UBC-2P_sc 139
Table 5.24. Namgang Dam Inflow analysis Result for scenario UBC-2P_ss 142
Table 5.25. Namgang Dam Inflow analysis Result for scenario UBC-2P_cs 145
Table 5.26. Namgang Dam Inflow analysis Result for scenario UBC-3P_scs 148
Table 6.1. Modeling Performance for Simulated Results 150
Table 6.2. Runoff Ratio for Namgang DAM 152
Table 6.3. Validation of Gauged and Hydrological (Peak) Inflows at Namgang Dam Site 154
Table 6.4. Validation of Gauged and Hydrological (Volume) Inflows at Namgang Dam Site 154
Fig. 1.1. Study flowchart 18
Fig. 2.1. Normal type water gauge 24
Fig. 2.2. Flot type water gauge 25
Fig. 2.3. Pressure type water gauge 26
Fig. 2.4. Ultrasonic wave type water gauge 27
Fig. 2.5. Sound wave type water gauge 29
Fig. 2.6. Bubble type water gauge 29
Fig. 2.7. Non rainfall time(A)와 Rainfall time(B)의... 35
Fig. 2.8. Reservoir water balance diagram 37
Fig. 2.9. Event·Runoff ratio of Namgang Dam 42
Fig. 3.1. Mean slope of Namgang Dam Watershed 45
Fig. 3.2. Mean altitude of Namgang Dam Watershed 45
Fig. 3.3. Hydrological soil diagram of Namgang Dam Watershed 46
Fig. 3.4. Land use status of Namgang Dam Watershed 47
Fig. 3.5. Subbasins and Major Gauging Stations Map of Namgang Dam Watershed 48
Fig. 3.6. Namgang Dam Basin Rainfall Observatory 49
Fig. 3.7. Namgang Dam basin water gauge and rainfall observation station 51
Fig. 3.8. Effective reservoir ratio 60
Fig. 3.9. water resource use ratio 60
Fig. 4.1. Namgang Dam Operation status 64
Fig. 4.2. Calibrate flow missing values 69
Fig. 4.3. Subbasin runoff Event 1 70
Fig. 4.4. Subbasin runoff Event 2 72
Fig. 4.5. Subbasin runoff Event 3 74
Fig. 4.6. Subbasin runoff Event 4-1 76
Fig. 4.7. Subbasin runoff Event 4-2 78
Fig. 4.8. Subbasin runoff Event 5-1 80
Fig. 4.9. Subbasin runoff Event 5-2 82
Fig. 4.10. Subbasin runoff Event 6 84
Fig. 4.11. Subbasin runoff Event 7 86
Fig. 4.12. Subbasin runoff Event 8 88
Fig. 4.13. Subbasin runoff Event 9 90
Fig. 4.14. Subbasin runoff Event 10 92
Fig. 4.15. Subbasin runoff Event 11 94
Fig. 4.16. Subbasin runoff Event 12 96
Fig. 4.17. Subbasin runoff Event 13 98
Fig. 4.18. Subbasin runoff Event 14 100
Fig. 5.1. Flow direction and distinction of Vflo™ Grid, Diagram 109
Fig. 5.2. DEM of Namgang Watershed 112
Fig. 5.3. Parameter Calibration Processes 113
Fig. 5.4. Calibration Factor(sample) 113
Fig. 5.5. Roughness of Namgang Watershed 114
Fig. 5.6. Hydro Conductivity 115
Fig. 5.7. Wetting Front Suction Head 115
Fig. 5.8. Effective Porosity 116
Fig. 5.9. Soil Depth 116
Fig. 5.10. Upstream boundary condition Verification procedure 119
Fig. 5.11. Boundary condition verification for sancheong subbasin 120
Fig. 5.12. Boundary condition verification for shinan subbasin 123
Fig. 5.13. Boundary condition verification for Changchon subbasin 125
Fig. 5.14. Scenario UBC-1P_sa(Boundary condition of Sancheong) 128
Fig. 5.15. Calculation result Scenario UBC-1P_sa 129
Fig. 5.16. Scenario UBC-1P_ch(Boundary condition of Changchon) 131
Fig. 5.17. Calculation result Scenario UBC-1P_ch 132
Fig. 5.18. Scenario UBC-1P_sh(Boundary condition of Shinan) 134
Fig. 5.19. Calculation result Scenario UBC-1P_sh 135
Fig. 5.20. Scenario UBC-2P_sc(Boundary condition of Shinan and changchon) 137
Fig. 5.21. Calculation result Scenario UBC-2P_sc 138
Fig. 5.22. Scenario UBC-2P_sc(Boundary condition of Shinan and sancheong) 140
Fig. 5.23. Calculation result Scenario UBC-2P_ss 141
Fig. 5.24. Scenario UBC-2P_sc(Boundary condition of Sancheong and Changchon) 143
Fig. 5.25. Calculation result Scenario UBC-2P_cs 144
Fig. 5.26. Scenario UBC-3P_scs(Boundary condition of Sancheong and Changchon, Shinan) 146
Fig. 5.27. Calculation result Scenario UBC-3P_scs 147
Fig. 6.1. Verification of Peak Inflow for Namgang Dam 155
Fig. 6.2. Verification of Total Inflow for Namgang Dam 156
Fig. 6.3. Hydrological & area ratio of Peak Inflow for Namgang Dam 157
Fig. 6.4. Hydrological & area ratio of Total Inflow for Namgang Dam 158
Fig. 6.5. Hydrological & OBS of Peak Inflow for Namgang Dam 159
Fig. 6.6. Hydrological & OBS of Total Inflow for Namgang Dam 160