摘要
采用现场大型直剪试验、推剪试验、压缩试验和压水试验,分别研究了矸石山体的抗剪特性、压缩特性和渗透特性。试验中分别在矸石山体边坡坡脚和坡中位置选用了多个测试点,对坡脚和坡中各测点的测试结果进行了对比分析,得出了坡脚和坡中位置矸石山体抗剪强度的分布特点。试验中对推剪试验结果和直剪试验结果进行了对比分析,得出了采用推剪试验所得结果的修正比率,为采用推剪试验测试矸石山体抗剪强度提供了依据。根据矸石山体原位压缩试验的实验结果,分析了矸石山体压缩特性。最后,根据现场压水试验结果,给出了矸石山体的渗透系数,并认为,矸石山体渗透特性在整个山体中差别细微,可以认为其渗透特性是均匀的。
The shear, compression and seepage characteristics of coal wastes are studied by direct shear tests, compression tests and seepage tests. Several points are selected at the foot and the middle of coal wastes slope, and the test results of those points are compared. The dispersive characteristics of the shear strength of coal wastes slope are given. The pushing shear stress and direct shear stress are compared, and the modified ratio is given based on the results by the pushing sheafing tests. The compression and seepage characteristics are also obtained. It shows that the seepage characteristics of the coal wastes is dispersively smooth in the whole coal wastes.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2009年第4期558-563,共6页
Chinese Journal of Geotechnical Engineering
基金
重庆市自然科学基金项目(CSFC.2006BBDF171)
关键词
矸石
直剪试验
推剪试验
压缩试验
压水试验
coal waste
direct shear test
pushing shear test
compression test
seepage test
