三峡地区石柱县陶家坝滑坡体物性特征及稳定性研究

对三峡库区石柱县陶家坝滑坡体的物性特征及稳定性的研究，目的是为库区三期地质灾害的勘察与治理提供参考依据。通过对该滑坡体的工程地质勘察（以钻探手段为主），取得了滑坡体的各种岩性物理学性质的一系列参数。同时采用传递系数法，分不同类型的工况条件进行稳定性系数和推力计算。具体分下面几种情况：1）天然状态下；2）连续高强度降雨状态下；3）降雨加地震作用状态下。研究上述三种情况在库区二期蓄水将滑坡体部分淹没状态下所引起的变化情况，得出的结论是：天然状态下，滑坡体稳定系数为1．58～1．65，为稳定状态；但在出现连续高强度降雨情况下，滑坡体稳定系数为1．03～106，滑坡欠稳定；若形成暴雨与地震的叠加作用，滑坡体稳定系数变为1.02，滑坡体处于不稳定状态。

Research on the Physical Property and Stability of the Taojiaba Landslide Body in Shizhu, Three Gorges Area

The purpose of researching the substance characteristics and the stabilities of Taojiaba landslide body in Shizhu county is to provide the reference database for the investigating the Three Gorges geologic hazards.A series of parameters of the various rock physical properties are obtained by the engineering geological investigation(main drills) of the landslide body.The stability coefficient and thrust of the project in three states(the natural state,the continuous high strength rains state and the rain and earthquake state) is calculated with the deliver coefficient method,which reflects the landslide body variety circumstance caused by part drown after the second impound inside the big dam.In the natural state,the landslide body stability coefficient is 1.581.65,belonging to the stable state.But under the condition of the continuous heavy rain,the landslide body stability coefficient is 1.031.06,which is not stable.If under the condition of rain storms with earthquake,the landslide body stability coefficient changes into 1.02,the landslide body is in the unsteady state.