【摘要】 以虎跳峡龙蟠右岸地区分布的土石混合体为依托,对土石混合体在浸水条件下的力学响应进行了大型原位水平推剪试验,取得一些成果。通过现场试验,提出在采用水平推剪试验获得土石混合体的强度参数时,为了结果的可靠性计算滑面应采用平均滑面。同时,将试验区天然状态下和浸水条件下的土石混合体强度参数进行对比,得出了土石混合体的各强度参数在浸水前后的变化规律。最后,对试验区土石混合体在浸水下的强度参数提出了合理的参考值。更多还原

【Abstract】 Several horizontal push-shear in-situ tests on SRM in an immersion state under water were carried at Long pan slope in Tiger-Leaping Gorge,and some significant conclusions were drawn.In order to gain reliable values of the strength parameters,an average sliding surface was put forward in calculation through in-situ horizontal push-shear test.Comparing the strength parameters in immersion state under water with those in natural state,a variation for rule of the strength parameters of SRM was achieved.In the end,the referential values of the strength parameters of the water immersed SRM in test area were given.更多还原