본 연구에서는 경북지역 사방댐 설치예정지의 유역특성과 산사태 발생지역의 주요 발생 인자들을 비교 분석하여 사방댐설치예정지 타당성평가 시 적용함으로써 적지적소에 사방댐을 설치하여 토사재해를 방지하는데 도움을 주고자 하였다. 1. 경북지역 사방댐 설치예정지의 유역면적은 평균 107.7ha, 평균 계상경사는 8.5%, 예정지 계상폭은 11.4m로, 평균 경사도는 27.2°, 평균 유효토심은 20.8cm, 평균 토양유기물함량은 3.3%, 유로연장은 평균 1.4㎞ 로 분석되었다. 2. 또한 산사태위험등급(평균) 1등급 4.8%, 2등급 45.8%, 3등급 46.7%, 4등급 2.7%, 수계차수는 1차수계 18개소, 2차수계 181개소, 3차수계 95개소, 4차수계 9개소, ...
본 연구에서는 경북지역 사방댐 설치예정지의 유역특성과 산사태 발생지역의 주요 발생 인자들을 비교 분석하여 사방댐설치예정지 타당성평가 시 적용함으로써 적지적소에 사방댐을 설치하여 토사재해를 방지하는데 도움을 주고자 하였다. 1. 경북지역 사방댐 설치예정지의 유역면적은 평균 107.7ha, 평균 계상경사는 8.5%, 예정지 계상폭은 11.4m로, 평균 경사도는 27.2°, 평균 유효토심은 20.8cm, 평균 토양유기물함량은 3.3%, 유로연장은 평균 1.4㎞ 로 분석되었다. 2. 또한 산사태위험등급(평균) 1등급 4.8%, 2등급 45.8%, 3등급 46.7%, 4등급 2.7%, 수계차수는 1차수계 18개소, 2차수계 181개소, 3차수계 95개소, 4차수계 9개소, 생태자연도는 1등급 38개소, 2등급 245개소, 3등급 20개소로 분석되었다. 3. 경북지역 사방댐설치예정지와 산사태 발생지 유역특성을 비교분석한 결과, 경사도와 임황은 사방댐설치예정지와 산사태 발생지가 조사방법상의 차이에도 불구하고 유사한 수치를 나타냄을 확인하였다. 4. 또한 모암은 사방댐 설치예정지가 화성암 53.5%, 산사태 발생지는 화성암 61.6%로 조사되었으며, 방위는 다소 차이를 보였다.
본 연구에서는 경북지역 사방댐 설치예정지의 유역특성과 산사태 발생지역의 주요 발생 인자들을 비교 분석하여 사방댐설치예정지 타당성평가 시 적용함으로써 적지적소에 사방댐을 설치하여 토사재해를 방지하는데 도움을 주고자 하였다. 1. 경북지역 사방댐 설치예정지의 유역면적은 평균 107.7ha, 평균 계상경사는 8.5%, 예정지 계상폭은 11.4m로, 평균 경사도는 27.2°, 평균 유효토심은 20.8cm, 평균 토양유기물함량은 3.3%, 유로연장은 평균 1.4㎞ 로 분석되었다. 2. 또한 산사태위험등급(평균) 1등급 4.8%, 2등급 45.8%, 3등급 46.7%, 4등급 2.7%, 수계차수는 1차수계 18개소, 2차수계 181개소, 3차수계 95개소, 4차수계 9개소, 생태자연도는 1등급 38개소, 2등급 245개소, 3등급 20개소로 분석되었다. 3. 경북지역 사방댐설치예정지와 산사태 발생지 유역특성을 비교분석한 결과, 경사도와 임황은 사방댐설치예정지와 산사태 발생지가 조사방법상의 차이에도 불구하고 유사한 수치를 나타냄을 확인하였다. 4. 또한 모암은 사방댐 설치예정지가 화성암 53.5%, 산사태 발생지는 화성암 61.6%로 조사되었으며, 방위는 다소 차이를 보였다.
This study was conducted in the hope of helping in preventing sediment disaster by: analyzing major factors at the landslide regions, conducting a feasibility assessment of the regions scheduled as sites for debris barriers, and by installing a debris barrier at the proper locations. 1. The watershe...
This study was conducted in the hope of helping in preventing sediment disaster by: analyzing major factors at the landslide regions, conducting a feasibility assessment of the regions scheduled as sites for debris barriers, and by installing a debris barrier at the proper locations. 1. The watershed characteristics analysis of the proposed sites of debris barriers in Gyeongsangbuk-do Province are: average drainage area of 107.7ha , average river bed gradient of 8.5%; boundery width of 11.4m; average slope of 27.2O, average effective soil depth of 20.8cm, average soil organic matter content of 3.3%; and flow path length of 1.4 km. 2. In the proposed sites for debris barriers, analysis of landslide risk rating (average) are: Class 1: 4.8%, Class 2: 45.8%; Class 3: 46.7%, and Class 4: 2.7%; distribution based on water system ranking: rank 1: 18 sites, rank 2: 181 sites, rank 3: 95 sites, and rank 4: 9 sites; and ecological naturalness: Class 1: 38 sites, Class 2: 245 sites, and Class 3: 20 sites. 3. Analyses of parent rock, bearing, slope, and stand are as follows: a) the slope of the proposed sites for debris barriers was 27.2O while in landslide regions the gradient is 21O-40O; b) mixed forest of softwood and hardwood comprises 50.5% of the area of the proposed sites for debris barriers while 51.2% of the area in landslide regions are covered with forests; c) igneous rock is the main parent rock in both regions, 53.5% in the proposed sites for debris barriers and 61.6% in landslide regions; and d) in terms of bearings, most of the proposed sites for debris barriers are situated in the southeast (15.5%) and southwest (15.5%) whereas 38.4% landslide regions are in the northeast. Despite the differences in the survey methods used in the proposed sites for installation of debris barriers and the landslide regions, relatively similar results for the comparative analysis of watershed characteristics, slope and forest cover were observed. Significant difference were observed in terms of the percentage composition of soil parent material and bearings. 4. Factors for comparison of the basic characteristics of the proposed sites for debris barrier and landslide regions were limited in the conduct of this study, further studies on this shall still have to be conducted.
This study was conducted in the hope of helping in preventing sediment disaster by: analyzing major factors at the landslide regions, conducting a feasibility assessment of the regions scheduled as sites for debris barriers, and by installing a debris barrier at the proper locations. 1. The watershed characteristics analysis of the proposed sites of debris barriers in Gyeongsangbuk-do Province are: average drainage area of 107.7ha , average river bed gradient of 8.5%; boundery width of 11.4m; average slope of 27.2O, average effective soil depth of 20.8cm, average soil organic matter content of 3.3%; and flow path length of 1.4 km. 2. In the proposed sites for debris barriers, analysis of landslide risk rating (average) are: Class 1: 4.8%, Class 2: 45.8%; Class 3: 46.7%, and Class 4: 2.7%; distribution based on water system ranking: rank 1: 18 sites, rank 2: 181 sites, rank 3: 95 sites, and rank 4: 9 sites; and ecological naturalness: Class 1: 38 sites, Class 2: 245 sites, and Class 3: 20 sites. 3. Analyses of parent rock, bearing, slope, and stand are as follows: a) the slope of the proposed sites for debris barriers was 27.2O while in landslide regions the gradient is 21O-40O; b) mixed forest of softwood and hardwood comprises 50.5% of the area of the proposed sites for debris barriers while 51.2% of the area in landslide regions are covered with forests; c) igneous rock is the main parent rock in both regions, 53.5% in the proposed sites for debris barriers and 61.6% in landslide regions; and d) in terms of bearings, most of the proposed sites for debris barriers are situated in the southeast (15.5%) and southwest (15.5%) whereas 38.4% landslide regions are in the northeast. Despite the differences in the survey methods used in the proposed sites for installation of debris barriers and the landslide regions, relatively similar results for the comparative analysis of watershed characteristics, slope and forest cover were observed. Significant difference were observed in terms of the percentage composition of soil parent material and bearings. 4. Factors for comparison of the basic characteristics of the proposed sites for debris barrier and landslide regions were limited in the conduct of this study, further studies on this shall still have to be conducted.
AI-Helper
※ AI-Helper는 부적절한 답변을 할 수 있습니다.