脆性岩石全应力-应变过程渗流特性试验研究  

Experimental research on complete stress-strain process seepage charactenstics of brittle rock

作　　者：朱珍德[1] 张爱军[1] 徐卫亚[1] 

机构地区：[1]河海大学岩土工程研究所,江苏南京210098

出　　处：《岩土力学》2002年第5期555-558,563,共5页Rock and Soil Mechanics

基　　金：中国博士后科学基金赞助项目(No.9910)

摘　　要：为了探讨岩石在整个变形过程中渗透性变化特点,取三峡永久船闸高边坡花岗岩与山西万家寨水电站高边坡灰岩试样分别进行不同围压条件下全应力-应变过程渗流试验。试验结果表明:岩石在破坏前后不同变形阶段渗流特性具有明显不同;岩石变形过程渗透性与变形破坏形式密切相关。在试验基础上进一步探讨了岩石全应力-应变过程渗流特点之机理,为研究水电工程节理裂隙岩体应力场与渗流场耦合问题提供有价值的支持。In order to probe into seepage characteristics of rocks during their whole deformetion processes,the authors have carried out seepage tests on the specimens of granite which were taken from the high slope at the permanent shiptock of the Tree Gorges Project, and specimens of limestone which were taken from the high slope at the Wanjazhai Hydropower Station in Shanxi Province, under several surrounding pressures.The test results show that the rocks have obviously unlike seepage characteristics before and after destruction of rocks; and the permeability behavior of the rock during deformation has an osculatory correlation with the style of deformation destruction. On the basis of tests, the mechanism of seepage characteristics of complete stress-strain process is discussed further so as to offer the valuable support for the problem of coupling stress field and seepage field of jointed rocks in hydropower projects.

关 键 词：全应力-应变过程 脆性岩石 渗流特性 围岩 围压 变形破坏形式 

分 类 号：TU459.4[建筑科学—岩土工程]