浅埋小净距隧道下穿多股铁路的风险分析及对策

Risk Analysis and Countermeasures for Shallow Tunnels with Small Clear Distance Crossing Beneath Railways

以石家庄地铁1号线张西区间下穿铁路既有线工程为依托,针对其浅埋、小净距、下穿铁路风险高等工程特点,分析风险产生的原因及危害,提出实施洞内控制、地层控制及既有铁路控制的分项控制对策。实践证明,风险分析合理,对策有效,隧道施工及铁路运营安全可控,可为类似工程提供参考。

Based on Zhang-Xi Section of the Line 1 project of Shijiazhuang Metro crossing under the existing railways,in view of its shallow buried depth,small clearance and other engineering features,this paper analyzes the causes of risks and harms,and puts forward control measures for in- hole control and existing railway control. Practice proves that risk analysis is reasonable and countermeasure is effective and the tunnel construction and railway operation safety is under control,which can provide reference for similar projects.