강우 및 지형 특성을 고려한 강원도 산지 태양광 시설의 비탈면 안정 분석
Analysis of the Slope Stability of Solar Facilities in Mountain Areas in Gangwon-do Considering Rainfall and Topographic Characteristics
- 주제(키워드) 도움말 강우강도 , 태양광 발전시설 , 비탈면 안정성 , GIS분석
- 발행기관 강릉원주대학교 일반대학원
- 지도교수 도움말 윤찬영
- 발행년도 2024
- 학위수여년월 2024. 8
- 학위명 석사
- 학과 및 전공 도움말 일반대학원 토목공학과
- 실제URI http://www.dcollection.net/handler/kangnung/000000011849
- UCI I804:42001-000000011849
- 본문언어 한국어
초록/요약 도움말
Solar power facilities installed in the mountainous risk areas of Gangwon-do face heightened risks of natural disasters such as landslides and localized heavy rainfall due to abnormal weather patterns caused by global warming. This study was conducted to analyze these risks and evaluate safety. The distribution status of solar power facilities in the mountainous regions of Gangwon-do was investigated, and hazardous areas were selected through three-dimensional terrain analysis using the SURFER program and spatial analysis using the ArcGIS program. Specifically, slope and risk were analyzed using DEM (Digital Elevation Model) and GIS-based data to identify areas at risk of landslides. The study targeted five regions within Gangwon-do where solar power facilities in mountainous areas are concentrated: Wonju, Gangneung, Pyeongchang, Samcheok, and Inje. For the selected landslide risk areas in each region, the FLO-2D program was used to simulate debris flow, analyzing the speed and flow direction of the debris. Additionally, slope stability was examined using the GeoStudio program, considering rainfall intensity. It was reviewed that some debris flows from the selected landslide risk areas could flow into residential areas, indicating a high level of risk. However, the slope stability analysis considering rainfall met the safety factor criteria. Nonetheless, the slope stability analysis considering rainfall in these hazardous areas used general soil depths due to the inability to ascertain specific terrain and ground characteristics. Additionally, the actual mountainous solar power facilities undergo grading and filling to meet the permissible slope criteria of 15 degrees set by the Mountain Management Act, resulting in changes in soil depth. However, these changes are not reflected in the numerical maps, so the slope stability analysis of hazardous areas does not sufficiently account for them. Therefore, an additional review was conducted by setting arbitrary cross-sections reflecting changes in slope and soil depth. The results showed that slope failures occurred at the ends of the fill sections of solar power facilities, similar to the trends observed in slope failures at these facilities, and the stability did not meet the safety factor criteria.
more초록/요약 도움말
강원도의 산지 위험지역에 설치된 태양광 발전시설은 지구 온난화로 인한 이상기후로 국지성 호우 등 산사태와 같은 자연재해의 위험이 높다. 본 연구는 이러한 위험을 분석하고, 안전성을 평가하기 위해 수행하였다. 강원지 역의 산지 태양광 발전시설 분포 현황을 조사하고, SURFER 프로그램을 이용한 위험지의 3차원 지형분석과 ArcGIS 프로그램을 이용한 공간분석을 통해 위험지역을 선정하였다. 특히, DEM(Digital Elevation Model)과 GIS 기반의 데이터를 이용하여 경사도와 위험도를 분석하여 산사태 발생 위험지를 선정하였다. 연구 대상 지역은 강원도 내 산지 태양광 발전시설이 집중된 원주시, 강릉시, 평창군, 삼척시, 인제군 등 5개 지역을 선정하였다. 각 지역에서 선정된 산사태 발생 위험지에 대하여 FLO-2D 프로그램을 이용하여 토석류 모의 검토를 통해 토석류의 속도와 흐름방향에 대하여 분석하였고 GeoStudio 프로 그램을 이용 강우를 고려한 비탈면 안정성 검토를 실시하였다. 선정된 산사태 위험지의 토석류 흐름 일부가 민가로 유출되는 것으로 검토 되어 위험도는 높았으나, 강우를 고려한 비탈면 안정성은 기준 안전율을 만족하는 것으로 확인되었다. 하지만 위험지의 강우를 고려한 비탈면 안정성 검토는 지형 및 지반 특성을 확인할 수 없어 일반적인 토심을 적용하여 검토하였다. 또한, 실제 산지 태양광 발전시설은 산지관리법 허용 경사 기준인 15도를 충족시키기 위해 깎기와 쌓기가 이루어져 토심의 변화가 발생하지 만, 이러한 현황이 수치지도에 반영되지 않아 위험지 비탈면 안정성 검토시 충분히 고려되지 못하였다. 따라서 경사와 토심의 변화를 반영한 임의의 단면을 설정하여 추가 검토한 결과, 모든 조건에서 태양광 발전시설에서 발생하는 비탈면 붕괴 경향과 유사한 쌓기부 끝단의 비탈면에서 붕괴가 발생하며, 기준 안전율에도 만족하지 못함을 확인할 수 있었다.
more목차 도움말
목 차
국문요약 ······················································································································ ⅰ Abstract ······················································································································ ⅲ 목 차 ······················································································································ ⅴ 표 목 차 ······················································································································ ⅷ 그림목차 ······················································································································ ⅺ
제 1 장 서 론 ······························································································· 1
1.1 연구배경 및 목적 ····························································································· 1
1.2 연구내용 및 방법 ····························································································· 3
제 2 장 문헌고찰 ·························································································· 4
2.1 산지 태양광 발전시설의 산사태 관련 연구동향 ······································· 4
2.1.1 국내 연구동향 ···························································································· 4
2.1.2 국외 연구동향 ···························································································· 5
제 3 장 연구 대상지역 선정 ····································································· 6
3.1 강원 산지 태양광 발전시설 위험지 선정 ··················································· 6
3.1.1 원주시 위험지 선정 ·················································································· 8
3.1.2 강릉시 위험지 선정 ················································································ 17
3.1.3 평창군 위험지 선정 ················································································ 29
3.1.4 삼척시 위험지 선정 ················································································ 38
3.1.5 인제군 위험지 선정 ················································································ 47
제 4 장 산사태 위험지 강우강도를 고려한 상세분석 ····················· 53
4.1 비탈면 안정성 설계기준 검토 ····································································· 53
4.2 산사태 위험지 상세분석 ··············································································· 54
4.2.1 원주시 ········································································································ 54
4.2.2 강릉시 ········································································································ 66
4.2.3 평창군 ········································································································ 82
4.2.4 삼척시 ········································································································ 94
4.2.5 인제군 ······································································································ 106
제 5 장 경사 및 토심 변화에 따른 안정성 분석 ···························· 114
5.1 경사 변화에 따른 안정성 ··········································································· 115
5.1.1 경사 20도 ································································································ 115
5.1.2 경사 25도 ································································································ 117
5.1.3 경사 30도 ································································································ 118
5.1.4 경사 35도 ································································································ 120
5.1.5 검토결과 ·································································································· 122
5.2 토심 변화에 따른 안정성 ··········································································· 123
5.2.1 경사 20도 비탈면-15도적용 ······························································· 123
5.2.2 경사 25도 비탈면-15도적용 ······························································· 126
5.2.3 경사 30도 비탈면-15도적용 ······························································· 128
5.2.4 경사 35도 비탈면-15도적용 ······························································· 131
5.2.5 검토결과 ·································································································· 134
제 6 장 결 론 ·························································································· 135
제 7 장 참고문헌 ······················································································ 139
