某工程库区滑坡蠕滑特性分析

某工程库区存在老滑坡体.为了研究滑坡体的滑动特性,对滑坡带土体进行了直剪试验、伺服剪试验和剪切流变试验,得到了长期强度和进入加速蠕变的临界强度.根据试验结果.判定该滑坡体的蠕变曲线为B型,表明该滑坡体属于有蠕滑的老滑坡体.以蠕变理论研究了在库水位稳定达到一年半的条件下,滑坡的减速蠕,变现象,分析了滑坡体的蠕滑机理,证明了滑坡体土的粘滞系数随着蠕滑过程而不断增大,论证了该滑坡体不具备从蠕滑转入剧滑的条件.

Creep behavior analysis of landslide in a project reservoir area

In order to research slide property of a certain old sliding mass which exists in a project reservoir region.direct shear test,servo shear test and shear rheology test were conducted and long-term strength and critical strength which enter accelerating creep were gained.According to test result,we can verdict that the creep curve is type B and the sliding mass is an old sliding mass with creeping slip.Deceleration creep phenomenon of landslide under the condition of reservoir level lasting one year and half was researched with creep theory,creep mechanism of sliding mass was analyzed,and the regularity that the viscosity coefficient of sliding mass soil increases continuously with creep course and there is not condition under which the creep of the sliding mass will switch over to intense creep was proved.