| This paper mainly studies the safety risk assessment method of highway cutting high slope construction.The qualitative and quantitative assessment of slope engineering safety accidents is a key project in the field of engineering research.This paper refers to a large number of literature on high slope engineering risk assessment,aiming at the defects and shortcomings of the current assessment methods,mainly does the following work:By using expert investigation method and fuzzy evaluation method,the risk assessment of accident possibility of cutting slope is divided into two aspects: site safety factor and slope design safety factor,so as to avoid individual excessive weight factors directly affecting the assessment conclusion.By using the risk matrix method and safety risk theory,the possibility of slope instability and consequence severity are combined,and the slope instability possibility evaluation model is established,from the original single accident possibility evaluation to the comprehensive evaluation combined with the accident severity,so as to avoid misjudging the construction safety risk of the project,and scientifically obtain the cutting slope construction safety risk level.Relying on the Wushan Dachang section project of Chongqing Wushan Wuxi Expressway and the high slope engineering project of the A2 contract section of Chongqing Chengkou Kaizhou expressway,the practical application of the current "guide" method is carried out to find out the problems and difficulties in the process of risk assessment.Combined with the risk assessment method,the accident possibility assessment index and the accident severity assessment index of the slope disaster are constructed.After the combination,the risk assessment system of the slope is generated,and the risk and control measures of the slope in the early site selection,scheme design,construction period,emergency management and control are clarified.It provides a reference for risk assessment of similar projects. |
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