水库大坝建设与地质灾害的争论由来已久。由于兴建水库大坝后,坝前库区的水位是上升,坝后的水位也会有所变动,水位的变化使得库区周边地区的山体、护坡土体等地质岩土的含水量发生变化。而根据有效应力原理,岩土体中的有效应力等于总应力减去孔隙水压力。孔隙水压力变化,必然导致有效应力的变化,从而是地质岩土体发 The debate over the construction of reservoir dams and geological disasters has a long history. After the reservoir dam is built, the water level in the reservoir area before the dam rises and the water level behind the dam will change. The water level changes the water content of the geotechnical and other geologic rocks in the surrounding area of ​​the reservoir area. According to the principle of effective stress, the effective stress in rock and soil is equal to the total stress minus pore water pressure. Pore ​​water pressure changes, will inevitably lead to changes in effective stress, which is the geological geotechnical hair