• 제목/요약/키워드: a localized torrential downpour

검색결과 21건 처리시간 0.025초

철도 노반유실검지시스템 구축에 관한 연구 (A Study on the Sensing System Construction of a Missing Roadbed)

  • 김기영;강경식
    • 대한안전경영과학회:학술대회논문집
    • /
    • 대한안전경영과학회 2009년도 추계학술대회
    • /
    • pp.461-470
    • /
    • 2009
  • A railroad has a benefit of the mass transportation of a passenger and cargo, but just a time of accident could cause a huge loss of a human life and property. Especially, a typhoon and a localized torrential downpour usually happened in summer season have caused average 38.29 times of the missing roadbed which support the railroad in recent 7 years. If a train would pass on this railroad which the roadbed was missed, there could be a huge accident and many people will die. But, the security issue is not satisfied because the method of sensing the missing roadbed is depending solely on the naked eye inspection by a person in charge. So, in this study, I would like to suggest the missing roadbed real-time sensing and train operation system to reduce the possibility of the railroad accident by controlling the operation of train when the missing roadbed condition would be sensed in the real-time system.

  • PDF

절토에 의한 상부자연지반의 붕괴 특성 연구 (A Failure of disturbed natural-slope ground caused by cutting slope)

  • 나광희;장범수;신창건;김용수;최용기
    • 한국지반공학회:학술대회논문집
    • /
    • 한국지반공학회 2004년도 춘계학술발표회
    • /
    • pp.629-634
    • /
    • 2004
  • When it was a localized torrential downpour last year, a natural-slope fell down above a cut-slope. They were caused that stress was opened by cutting slope, ground water level rose quickly and a ground mass strength fell etc. So volume of ground mass increase because of that reasons, finally the disturbed ground was collapse. Therefore I suggest that safety of a natural-slope is a consideration, when a cut-slope is made by cutting ground.

  • PDF

집중호우로 붕괴된 절토부 사면의 사면안정 처리에 관한 연구 (A Study on Failed Slope Stability by Localized Torrential Downpour)

  • 신희순;배규진;이승호;정용진;심정훈
    • 한국지반공학회:학술대회논문집
    • /
    • 한국지반공학회 2003년도 봄 학술발표회 논문집
    • /
    • pp.137-144
    • /
    • 2003
  • Continuous road improvement is required by situation that need link between cities by special quality that is our country's topography enemy that most of country have consisted to mountain district. According to this, occurrence of large cutting slope is formed necessarily Cutting slope are very weak real condition because of concentrative downpour and can know easily by example of typhoon Rusa. This study did helpful in slope design and carrying out suitable reinforcing method.

  • PDF

강원산간지형에 적합한 사방댐 모델결정을 위한 기초적 연구 (A basic study for Decision of Debris Barrier Model it is suitable to Mountains among the Kangwon)

  • 황석민;이승호;문정식;김유태
    • 한국방재학회:학술대회논문집
    • /
    • 한국방재학회 2007년도 정기총회 및 학술발표대회
    • /
    • pp.530-533
    • /
    • 2007
  • Our country occurs yearly damage, because of every year in the summer season characteristic localized torrential downpour. Therefor, we will research damage instance and natural calamity reduction effective plan through research against a landslide relation Debris Barrier, And the Debris Barrier decide suitability of Mountains among the Kangwon.

  • PDF

홍수시 유송잡물 이동 특성 분석에 관한 연구 (A Study on Movement Characteristics Analysis of Debris Accumulation at Flood)

  • 오채연;전계원;윤영호
    • 한국방재학회:학술대회논문집
    • /
    • 한국방재학회 2008년도 정기총회 및 학술발표대회
    • /
    • pp.707-710
    • /
    • 2008
  • Recently, a rivers' bridge that locate on among the mountains area is destroyed by debris accumulation and debris flow, because of frequent occurrence of typhoon and a localized torrential downpour. therefore a river make a part of dam's effect. Actually, this situation gives damages like inundation of a bridge upper stream area's. Generally, It the main cause of the occurrence route of the debris accumulation is that outbreaks of driftwood and debris flow because of landslide, that occurred by severe rain storm. Also, a lot of debris are occurred when big flood come up during long period at this time, this kind of debris accumulation remove to other place, in several, and specially, debris accumlation move to the place where the depth of water is deep and velocity is fast river center. According to these kind of fact, this research put in effect and analyze that movement characteristic's numerical simulations of debris accumulation at flood according to a domestic outside literature investigation, on-site monitoring survey and parameter scenario which comes out through the hydraulic modeling analysis.

  • PDF

사면보강구조물에 대한 실물재하시험과 평가 (Full Scale Load Tests on Reinforced Slope Structure)

  • 권영호;박신영;이승현;강인규;기민주
    • 한국지반공학회:학술대회논문집
    • /
    • 한국지반공학회 2006년도 추계 학술발표회
    • /
    • pp.241-255
    • /
    • 2006
  • Owing to a landslide or embankment damage be caused by a localized torrential downpour and heavy snowfall resulted from recent abnormal climate, a slope stability is very important. This study is investigate a general slope reinforcement method and applicability improvement of soil nailing method utilized prototype loading test for the facing stiffness effect confirmation. A prototype loading test supplements general slope stability study by numerical analysis or laboratory test with a resonable analysis of slope structure.

  • PDF

신뢰성 해석에 의한 제방의 월류 위험도 산정 (Evaluation of Overtopping Risks of Levee by using Reliability Analysis)

  • 이철응;박동헌;심재욱
    • 산업기술연구
    • /
    • 제29권A호
    • /
    • pp.101-110
    • /
    • 2009
  • Due to frequent occurrence of a localized torrential downpour caused by global warming and change of outflow tendency caused by rapid urbanization and industrialization, risk analysis must be carried out in levee design with uncertainty. In this study, reliability analysis was introduced to quantitatively evaluate the overtopping risk of levee by the uncertainty. First of all, breaking function was established as a function of flood stage and height of levee. All variables of breaking function were considered as random variables following any distribution functions, and the risk was defined as the possibility that the flood stage is formed higher than height of levee. The risk evaluation model was developed with AFDA (Approximate Full Distribution Approach). The flood stage computed by 2-D numerical model FESWMS-2DH was used as input data for the model of levee risk evaluation. Risk for levee submergence were quantitatively presented for levee of Wol-Song-Cheon.

  • PDF

서울시 중앙버스전용차로 포장방법 개선방안 연구 (A Study on the Improvement of Pavement for Bus Rapid Transit System in Seoul)

  • 배윤신;권완택;이상염
    • 한국도로학회논문집
    • /
    • 제16권4호
    • /
    • pp.11-19
    • /
    • 2014
  • PURPOSES: This study is to suggest the improvement for bus rapid transit system in Seoul METHODS: The maintenance cost for bus lane damages and plastic deformations are increased by bus passing speed, heavy bus weight, and climate change (localized torrential downpour, subtropical climate) and the accident risk has been increased. RESULTS: Recent analysis of pavement damage indicates that bus lane damage caused by heavy weight is overwhelming and it is urgent to prepare countermeasures. CONCLUSIONS : Pavement data of bus rapid transit system, bus transit numbers and pavement damage elements were analyzed. By analyzing pavement maintenance, design and construction, the countermeasures for the improvement of bus lane pavement and effective maintenance were suggested.

산사태 위험지도에서 안전등급지역인 오륜터널 일대의 토사유실 원인분석 (Causual Analysis on Soil Loss of Safety Class Oryun Tunnel Area in Landslide Hazard Map)

  • 김태우;강인준;최현;이병걸
    • 대한공간정보학회지
    • /
    • 제24권1호
    • /
    • pp.17-24
    • /
    • 2016
  • 현재 우리나라는 기후변화로 인해 여름철 집중호우와 국지성 호우가 증가하고 있다. 이에 토사유실 예방에 관한 연구들이 활발하게 이루어지고 있고 산림청에서는 산사태 위험지도를 제공하고 있다. 산사태 위험지도는 9가지의 요소들로 가중치를 주어 5등급화 하여 위험도를 나타낸다. 2014년 8월 25일 부산시 금정구 오륜터널 일대에서 국지성 호우로 인한 토사유실이 발생했으며 산사태위험지도와 비교해 본 결과 실제 토사유실이 발생한 지역은 위험지도상의 안전지대였다. 토사유실이 발생한 오륜터널 일대를 강우량, 토양도, 지질도, 임상도, 경사도, 하계망, 분수령, 유역형상, 유출량을 분석하였다. 분석한 결과 산사태가 발생한 지점의 토양, 임상, 다량의 유출량과 첨두유량, 수계망의 차수, 유역의 형상이 토사유실의 원인요소라고 판단된다. 이 요소 중 산사태 위험지도에서는 고려하지 않은 집중 강우량에 의한 유출량과 첨두유량, 수계망의 차수, 유역의 형상이 산사태의 가장 큰 원인이라고 분석되었다. 기록적인 국지성 호우로 인해 많은 재산피해가 있었던 발생지점 중 하나인 오륜터널 일대의 토사유실원인분석 연구를 통하여 강수량에 의한 유출량, 첨두유량, 유역의 형상이 중요하다고 판단된다. 이 요소들을 산사태 위험지역 판정 시 고려하여 집중호우 시 토사유실에 대비하여야 한다.