Analysis And Key Control Technology Of Subway Construction Risks

With the development of economy,speed up the pace of urbanization,and increasing demand for urban transport,subway is on-time dominating the top.But the underground track construction is often affected by hydro-geological environments,often accompanied by intensive ground buildings,with complex others around underground facilities,construction difficulties and build risks increase,subway safety,accidents are also emerging.Based on subway construction risk source as the research object,this paper first was analyzed the classification of risk source and risk areas,and then in Suzhou as a case study of the characteristics of risk source distribution metro subway,artificial bridge in guangzhou subway underpinning system as a case study to risk control key technology,specific content as follows.(1)On the risk theory,the subway construction risk is divided into three types:risk source analysis,the construction of foundation pit interval shield tunnel construction risk source analysis,and the bypass risk source analysis.(2)In Suzhou subway construction of risk source distribution characteristics was introduced in detail.(3)Focus on using underpinning control technology,take the initiative in deformation analysis research in system;In guangzhou subway crossing through artificial bridge as an example,by finite element software ANSYS numerical simulation is made on the mode of active underpinning the general rule of stress deformation,the weak link of the reinforcement and elimination of potential safety hazard has reference significance.