CAJ | 학술논문

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。
활대토시활파체적중요조성부분，활대토적강도특정대우변파은정구유중요적공제작용。삼협고구적황토파활파인상년경수고수위변화여강우적영향，활대토적함수솔총시처우불단변화적과정중，인이대기강도삼수산생료교대적영향。침대저일문제，재삼협고구황토파림강이호활파상채집료활대토양，대불동함수솔하적활대토진행료불배수쾌전시험。시험결과현시：함수솔적변화대활대토적항전강도영향교위민감；시험수거의합발현，활대토적점취력 C 급내마찰각φ균수함수솔증대근사정선성감소，차φ치강저적선성규률경추명현。
The soil in slip zone is the vital section of the landslide, the strength characteristic has important effect on the stability of slope. Because Huangtupo landslide in Three Gorges Reservoir area has been affected by varia-tion of reservoir water level and rainfall, water content of soil in slip zone is always in the process of changing, this produces much influence on the strength parameter of soil in slip zone. According to this thought, some soil sam-ples in slip zone of Huangtupo’s second landslide near river were taken, undrained quick direct shear test for the soil in slip zone with different water content was conducted. The parameters of internal friction angle(φ) and cohe-sion(C) influenced by water content of soil in slip zone were acquired through test.