长江科学院院报2017，Vol.34Issue(9)：122-126,5.DOI:10.11988/ckyyb.20160572
泥页岩浸水力学特性试验研究
Experimental Study on Mechanical Properties of Soaked Shale
摘要
Abstract
The mechanical properties of shale vary after being soaked and softened in water.In view of this, triaxial compression tests were conducted on shale soaked in water for different durations.The relationship between stress and strain of soaked shale was revealed, and the variation regularity of mechanics parameters of shale was obtained under the action of water deterioration.Results indicate that the strength and elastic modulus of soaked shale specimens reduced greatly with the increase of soaking duration.Water soaking had small influence on frictional angle of soaked shale, but significant impact on cohesion.In addition, as the softening effect became increasingly significant, the failure mode of shale specimens gradually changed from brittle tensile splitting failure to a mixed failure form of tension and shear.The strength reduced and ductility increased when softening action became increasingly significant.Soaking duration has significant impact on strength, deformation and failure mode.The results offer reference for determining geotechnical parameters or mechanical analysis of shale.关键词
泥页岩/软化作用/浸水时间/三轴压缩试验/力学特性/应力-应变曲线Key words
shale/softening action/soaking time/triaxial compression test/mechanical characteristics/stress-strain curve分类
建筑与水利引用本文复制引用
金成,王芳,石崇..泥页岩浸水力学特性试验研究[J].长江科学院院报,2017,34(9):122-126,5.基金项目
国家重点基础研究发展计划(973计划)项目(2015CB057903) （973计划）
国家自然科学基金青年项目(51309089) （51309089）
江苏省基础研究计划(自然科学基金)项目(BK20130846) （自然科学基金）
