EPB隧道掘进对软岩地层地表影响分析  

Analysis on Ground Surface Settlement due to the Tunnel Construction with EPB Shield in Soft Rock

作　　者：陈卓 CHEN Zhuo(Chengtong Branch,China Railway No.2 Engineering Group Co.,Ltd.,Chengdu 610083,China)

机构地区：[1]中铁二局工程有限公司城通分公司,成都610083

出　　处：《路基工程》2018年第6期182-185,共4页Subgrade Engineering

摘　　要：以城际快速轨道南京南站至禄口机场站1号盾构井工程为依托,分析土压平衡盾构模式掘进对软岩地层地表影响,减小城市环境下土压平衡盾构模式掘进对下穿建筑物影响,确保隧道施工安全。为此,运用FLAC显式有限差分软件进行建模,通过对土仓压力、同步注浆效果和出碴量等影响因素的分析,研究了土压平衡盾构模式掘进对软岩地层地表沉降的影响,确定了合理的掘进控制参数。Based on inter-city express rail from the Nanjing south railway station to the#1 shield block in Lukou airport station,in order to reduce the influence of the tunneling of the earth pressure balance shield in the urban environment on the underneath passing buildings and ensure the construction safety of the tunnel,ground surface settlement is analyzed due to the tunnel construction with EPB shield in soft rock.Through the explicit finite difference software FLAC modeling,considering the chamber earth pressure,the effect of synchronous grouting and the amount of the slag,the influence of the model of earth pressure balance shield on ground surface subsidence of soft rock is studied.and reasonable tunneling control parameters are determined.

关 键 词：土压平衡盾构 土仓压力 同步注浆效果 出碴量 显式有限差分 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]