地下厂房渗流场及其对围岩稳定的影响

Seepage and Its Effect on Surrounding Rock of Underground Powerhouse

本文首先提供了一个仅进行少次迭代即可确定浸润线的稳定渗流的计算方法。然后根据首部布置地下厂房的特点 ,分析了排水措施对渗流场的影响。最后 ,分析了渗流对围岩稳定的不利影响 ,指出渗流所产生的不均匀变形和附加应力增量是不大的 ,尚不足以影响围岩的稳定性。

An effective numerical method is firstly presented to compute the saturation line of steady seepage with less iteration repetition.Then the effect of drainage facility on seepage field is analyzed according to the layout of underground powerhouse.Finally,the adverse effect of seepage on the surrounding rock stability is given.The calculation results indicate that the inhomogeneous deformation and additional stress incrementation caused by the seepage have no obvious effect on the surrounding rock stability.