控制型防排水隧道渗流场数值分析

Seepage Field Analysis for Tunnel Excavation Based on Drainage Control

分析隧道开挖过程中采用地下水控制排放措施时,隧道周围渗流场的变化情况,得出不同注浆圈渗透系数和厚度时隧道开挖排水量的大小,以及隧道开挖排水造成的地下水位降深情况。通过分析得出注浆圈厚度和渗透系数存在最优值。研究结论对于富水隧道施工有一定的指导。

With analysis of seepage field changes of tunnel with technology of drainage control,water displacement and the deepening of ground water table can be known when the permeability coefficient and the thickness of grouting circle is different.There is an optimal value of the permeability coefficient and the thickness of grouting circle,which can be used to guide the construction of rich water tunnel.