灌溉诱发黄土滑坡机理研究

灌溉诱发黄土滑坡机理研究 English Version

基金项目: 香港研究资助局资助项目(RGC-HKU7176/05E)

Institute of Geology and Geophysics Chinese Academy of Science Beijing 100029 China

摘要: 基于斜坡土体的原位应力状态及现场应力路径,利用GDS三轴测试系统,对原状黄土开展了等压/偏压固结不排水剪(ICU/ACU)和常剪应力排水剪(CQD)试验,研究了饱和黄土的应力应变特性,得到了其稳态线和状态边界面,在此基础上探讨了灌溉诱发黄土滑坡的形成机理。
- 应力路径 /
- GDS /
- 稳态线 /
- 状态边界面 /
- 黄土滑坡机理
Abstract: Based on the in-situ stress state and field stress path of soil slopes,a series of triaxial tests,composed of isotropically and anisotropically consolidated undrained(ICU/ACU) compression tests and constant-shear-drained(CQD) triaxial tests,were carried out on undisturbed saturated loess.The stress-strain behaviour of a saturated loess were studied,and the steady state line and the state boundary surface were obtained.According to the test results,the mechanism of irrigation-induced landslides of loess was discussed.
- stress path /
- GDS /
- steady state line /
- state boundary surface /
- loess landslide mechanism