CAJ | 학술논문

为减小软土地层地铁隧道施工引起的地表沉降对地下管线的影响,考虑流固耦合效应和施工效应的综合作用,根据管线允许的安全控制标准,采用FLAC~(3D)建立的数值模型,对降水、动态降水和非降水3种施工方法进行了对比研究.结果表明,非降水施工法是控制地层固结沉降最有效的施工方法.深圳地铁1号线采用该施工方法,保证了煤气管线在施工期间安全使用.
위감소연토지층지철수도시공인기적지표침강대지하관선적영향,고필류고우합효응화시공효응적종합작용,근거관선윤허적안전공제표준,채용FLAC~(3D)건립적수치모형,대강수、동태강수화비강수3충시공방법진행료대비연구.결과표명,비강수시공법시공제지층고결침강최유효적시공방법.심수지철1호선채용해시공방법,보증료매기관선재시공기간안전사용.
To reduce the influence of ground surface subsidence caused by metro tunneling in soft clay strata upon underground pipelines, the numerical simulation model in software FLAC~(3D) was applied to compare three tunneling methods, i. e. , pumping, dynamic pumping and un-pumping tunneling methods, through considering the compounding effect of fluid-solid coupling and tunneling process and the safety control standard of pipelines. The research result shows that the un-pumping tunneling method is the most effective one, this method being adopted in the construction of Shenzhen metro tunnel, so that gas pipelines below the tunnel ran safely in the construction process.