• 제목/요약/키워드: slope disaster

검색결과 359건 처리시간 0.026초

무한사면해석기법과 GIS를 이용한 사면 재해 위험성 분석 및 검증 (Analysis and Verification of Slope Disaster Hazard Using Infinite Slope Model and GIS)

  • 박혁진;이사로;김정우
    • 자원환경지질
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    • 제36권4호
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    • pp.313-320
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    • 2003
  • 사면재해는 강우기에 반복적으로 발생하는 지질재해의 하나로 우리나라의 경우 연평균 약 23명 정토의 인명피해가 사면재해로 인해 발생하고 있으며, 이는 자연재해로 인한 인명피해 중 약 25% 정도를 차지하는 수치이다. 그러나, 이러한 사면재해는 다양하고 복합한 지질 및 지형 특성과 갉은 공간적인 특성과 집중호우와 같은 기후특성에 의해 좌우되므로 사면재해 예측이나 위험성에 대한 정량적인 산정을 무척 어려운 실정이다. 따라서, GIS를 이용한 위험성분석이나 확률을 이용한 다양한 기법이 활용되고 있다. 특히, GIS를 이용한 기법은 광역적인 지역에 대하여 방대한 양의 자료를 효율적으로 처리 및 분석을 수행함으로서 사면재해 관련 연구에 폭 넓게 활용되고 있다 본 연구에서 사용된 무한사면해석기법은 사면재해의 발생여부와 관련요인간의 연관성에 대한 단순한 통계적인 분석에 의한 기존 기법의 한계점을 보완하고 사면재해발생과 관련된 역학적인 검토를 수행하기 위하여 제안되었다. 본 연구 결과에 의하면 사면재해가 발생했던 지점과의 비교를 농하여 지반이 완전히 포화된 경우, 즉 m=1인 경우 무한사면모델에서 불안정하다고 해석된 지역에서 전체 사면재해의 87.5%가 발생하였음을 보여주고 있어 사면재해에 대한 해석기법으로서의 착용가능성을 보여주고 있다.

상부자연사면 내 침식성 붕괴에 대한 사례 연구 (The Case Study of Corrosive Fall in Upper-Slope)

  • 이정엽;구호본;김승현
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 추계 학술발표회
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    • pp.1038-1049
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    • 2008
  • The purpose of this case study is corrosive fall in Upper-Slope. Upper-slope of this slope affect in fall of the cut-slope because of wide valley. Deposit which is piled up naturally is the sinkage occurs gradually in upper-slope.

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GIS를 활용한 급경사지 재해현장 분석 -전북 무주군, 장수군, 진안군 중심으로- (Analysis of Steep slope Disaster Sites using Geographic Information System)

  • 이민석;오정림;박덕근;김만일
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2010년도 춘계 학술발표회
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    • pp.940-945
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    • 2010
  • There are human casualties that caused by slope-stability related disasters such as landslide and debris flow during typhoon and rainy season every year in Korea. These disaster sites can be analyzed systematically using digital topographic data and aerial photogrammetry. In this study, geographical factors such as slope degree, geology, height, and soil depth are analyzed in four landslide-disaster sites from Muju, Jinan, and Jangsu County based on digital elevation maps generated by ArcGIS. Each site showed different characteristics in geology and geography and it is found that GIS can be utilized for the visualization of steep-slope failure areas.

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국내외 급경사지 평가표 분석을 통한 개선방안 연구 (Improvement of Field Assessment List for Slope-stability Estimation)

  • 손영진;박덕근;오정림;송영갑
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2010년도 춘계 학술발표회
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    • pp.509-522
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    • 2010
  • There is a increasing trend in disaster occurrence due to steep-slope failures in urban area during typhoon and torrential rain season in Korea. The underlying hazards that cause slope failure are mainly linked with urbanization and industrialization. To minimize the disaster damages by slope failure, objective and unified evaluation approached are desired. Since currently available evaluation checklists are developed for specific purposed, there is a limitation to adapt those checklists for stability evaluation in natural terrain. This study proposes an improved evaluation checklist based on the comparison of previous checklists and applicability and feasibility are analyzed implementing field application.

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절토사면 유지관리 매뉴얼 작성을 위한 현장조사에 관한 연구 (A Study on Site investigation for Cut Slope Management Manual preparation)

  • 지영환;장범수;김용수;이종영
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2005년도 춘계 학술발표회 논문집
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    • pp.825-830
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    • 2005
  • Cut slope and facility of management investigation is the protection of humans and properties. it is very important the prevention of disaster facility and the damage of the slope protection facility. It is very difficult to forecast slope stability, disaster possibility and collapse. It will be able to minimize the damage which it prepare against slope facility and cut slope of deformable investigation and collapse and the disaster. therefore those deformable investigation is important. Investigations execute upheaval, crack, sliding for slope and cut slope reinforcement. Investigation executes forecast in place where the construction problem, the effect which the damage in road traffic or the contiguity facility.

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충청도 내 일반국도 절토사면의 현황자료와 위험도간의 상관성분석 (Correlation Analysis between Inventory data and danger grade of Cut slope in Chungcheongdo)

  • 김진환;이종현;김승현;이정엽;구호본
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 추계 학술발표회
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    • pp.980-983
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    • 2008
  • KICT has been carrying out inventory research on the cut slopes of national roads. Inventory research results are basic data used in cut slope management system. Inventory data are classified by general status, cut slope characteristics and inspector opinion. Cut slope inventory data are utilized to figure out dangerous slopes and decide survey ranking of detailed safety diagnostication. This paper will draw dangerous cut slope and more important inventory data in Chungcheongdo via correlation analysis.

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인공신경망을 활용한 급경사지 붕괴유발인자 평가 (Assessment of Factors affecting Steep-slope Failure using Artificial Neural Network)

  • 송영갑;오정림;박덕근;손영진
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2010년도 춘계 학술발표회
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    • pp.1342-1348
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    • 2010
  • Currently available evaluation checklists are developed for specific purposed using different parameters and items determined by different weighting factors. Those items with different weighting are sometimes said that they are based on the engineering judgement and leap of faith and, therefore, there is a limitation to adapt those checklists for slope-stability evaluation in the field. This study reviews factors affecting slope stability, analyze the relationship between those factors and slope failures using artificial neural network, and proposed a slope-stability evaluation model for adequate weighting for the factors.

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급경사지 재해발생이력자료 구축방안 (Solution for Improvement in the Accumulation of Disaster Occurrence Data for Steep Slope Area)

  • 김성욱;최은경;이오;박덕근;오정림
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2010년도 춘계 학술발표회
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    • pp.891-894
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    • 2010
  • Steep slope disasters accompany economic loss along with casualties, so the evaluation and the systematic management on the regions with slope collapse danger are required. A lot of manpower, time, and economic cost are needed to accumulate disaster history of steep slope areas by the national and small-sized region. As the method for this, it construed location data about each area with disaster occurrence by maknd elocation data of collapsed steep areas through high-resolution satellite image and collectnd edata on the regions with disasters through media and literature data such as a disaster annual report and a disaster comprehensive report. The study selected three shortest routes includnd ethe area with disaster in Jeolla province on literature and the collapsed area found by the image data, and constructed the results of the field survey as database.

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절토사면 하부의 과도한 굴착에 따른 붕괴 사례 연구 (A Case Study on Slope Failure by Excessive Under Cut)

  • 이종현;김승현;구호본
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2009년도 춘계 학술발표회
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    • pp.1154-1160
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    • 2009
  • Cut slope failure is happened in various form by several causes. In this study, we searched causes of cut slope failure shortly, and we made a study of slope failure by excessive under cut. Under cutting slope does to add unstability. Thereby, cut slope failure can be happened on a large scale.

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국내 사면붕괴 방지대책 선진화 방안 (Improvement of Countermeasures for Slope Failure Mitigation in Korea)

  • 박덕근;김태훈;오정림;한태곤
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2005년도 지반공학 공동 학술발표회
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    • pp.107-116
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    • 2005
  • Korea has been suffering from various natural disasters. Slope-stability related disasters such as landslides usually occur during typhoon and torrential rain season. Types of slope-stability related disasters can be classified as failures in cut slopes along constructed roads, landslides in natural terrain, and retaining structure failures in urban area. This paper summarizes human casualties for the last 29 years in Korea, reviews field studies for the disaster sites that caused human casualties due to torrential rains in the Summer of 2005, analyzes causes of slope-stability related disasters and includes recommendations for an effective management system.

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