The reliability research on the working slope of North Surface Coal Mine of Yima Coal Administration

Based on the spatial variability of rock mass strength, a reliability analysis on the working slope of North Surface Coal Mine of Yima Coal Administration is systematically performed by means of FLAC numerical software, physical simulation experiment and Monte-Carlo-Sarma technique. At the same time, a probable progressive failure mechanism is studied by reliability method. The failure probability of the slope can be accepted according to the engineering function.