岩体软弱夹层的渗透性对水压力响应的研究

由于软弱带岩体的工程特性很差，且又处于应力场和渗流场中，在外荷载的作用下，岩体的结构将发生变化，进而引起岩体的渗透性发生变化，从而改造岩体的应力场。以某水电站工程坝址区软弱带岩体所作的渗透变形试验资料为基础，分析岩体所受应力、岩体结构及岩体的渗透性之间的关系。给出了反应软弱带岩体的渗透性与孔隙度之间关系的表达式。

Study on Response of Permeability of Weak Interlayer to Hydraulic Pressure

Due to the very poor engineering characteristics of weak belt rockmass and its location in both stress and infiltration fields, the structure of rockmass will change under the external load, leading to the change in the permeability of rockmass and consequently the change in its stress field. Based on the data of infiltration deformation tests in the weak belt rockmass in the engineering dam location area of a hydropower station, the relationship between the stress applied on the rockmass, the rockmass structure and its permeability are analysed and a formula representing the relationship between the permeability and the voidage of weak belt rockmass is given.