岩石节理非饱和渗流特性研究  

A study on unsaturated hydraulic conductivity of rock joints

作　　者：周创兵[1] 叶自桐[1] 熊文林[1] 

机构地区：[1]武汉水利电力大学

出　　处：《水利学报》1998年第3期22-25,共4页Journal of Hydraulic Engineering

摘　　要：本文根据岩石节理非饱和渗流试验所测定的节理排泄和吸湿过程，探讨了节理非饱和渗流机理，提出了基于节理概率分布的毛细压力与饱和度的解析模型以及节理非饱和水力传导度的理论表达式．研究表明，单节理非饱和渗流特性与二维非均质多孔介质具有一定的相似性，本文提出的有关模型可作为确定岩石节理非饱和渗流参数的基本方法．According to the drainage and imbibition processes measured in an unsaturatred seepage test for a rock joint, the mechanism governing the unsaturated fluid flow through rock joint is discussed. Based on the probabilistic distribution of joint aperture, a analytical model for the relationship between capillary pressure and saturation and an expression for unsaturated hydraulic conductivity are put forward. It is shown that the unsaturated hydraulic conductivity of a single joint has certain similarities with that of porous media. The models proposed in this paper can be used as the basic method for determining the unsaturated seepage parameters of rock joint.

关 键 词：岩石节理 非饱和渗流 水力传导度 

分 类 号：TU452[建筑科学—岩土工程]