中文摘要：

滑带土是滑坡体的重要组成部分,滑带土的强度特征对于边坡稳定具有重要的控制作用.三峡库区的黄土坡滑坡因常年经受库水位变化与降雨的影响,滑带土的含水率总是处于不断变化的过程中,因而对其强度参数产生了较大的影响.针对这一问题,在三峡库区黄土坡临江二号滑坡上采集了滑带土样,对不同含水率下的滑带土进行了不排水快剪试验.试验结果显示：含水率的变化对滑带土的抗剪强度影响较为敏感;试验数据拟合发现,滑带土的黏聚力C 及内摩擦角φ均随含水率增大近似呈线性减小,且φ 值降低的线性规律更趋明显.

英文摘要：

The soil in slip zone is the vital section of the landslide, the strength characteristic has important effecton the stability of slope. Because Huangtupo landslide in Three Gorges Reservoir area has been affected by variationof reservoir water level and rainfall, water content of soil in slip zone is always in the process of changing, thisproduces much influence on the strength parameter of soil in slip zone. According to this thought, some soil samplesin slip zone of Huangtupo’s second landslide near river were taken, undrained quick direct shear test for thesoil in slip zone with different water content was conducted. The parameters of internal friction angle（φ） and cohesion（C） influenced by water content of soil in slip zone were acquired through test.