工程岩体渗透特性分类的多指标体系模糊数学方法

The Multi-Factor Fuzzy Mathematical Method for Permeability Classification of Engineering Rock Mass

岩体是一种非均质、各向异性的多相介质体系 ,岩体结构性是控制岩体渗透特性的主因 ,而岩体结构性可用渗透系数 (张量 )、空隙率、裂隙分维数、裂隙连通率及应力状态等指标描述。引入模糊数学方法 ,采用多指标体系定量对岩体的渗透特性进行了分类。

Rock mass is a kind of non homogeneous, anisotropic and multi phases medium system. The structural behaviors of rock mass is the main factor to control rock mass permeability, while the rock mass structural behaviors can be described by such afctors as permeability coefficient(tenor), porosity, fractural dimensions, fracture connectivity and stress states in rock mass. Also, fuzzy mathematical method is introduced in this paper; and the multi factor system quantification is adopted to classify the permeability of rock mass. The actual examples used in analysis indicate the effectiveness of this method.