2D And Local3D Stability Numerical Analysis Of Xinqiao High And Steep Slope

In recent years, with the continuous exploitation of Xinqiao Pyrite Mine,the mining area has occurred many times big landslide slope, seriously affects the life safety of mine workers and the economic benefits of mining enterprises. Therefore, to analyze the stability of high steep slope in Xinqiao Pyrite Mine, has become an urgent problem. According to the existing survey data of high and steep slope in Xinqiao Pyrite Mine,this paper use the strength reduction method and only consideres the effect of gravity loads,solving the safety coefficient of slope when it is excavated under the level surface of72meters,108meters,144meters,180meters,and providing scientific basis for the study of slope stability.The main research contents of this paper are:1. Evaluating the mass quality of rock through experiment, getting the relevant material parameters of rock.2Two-dimensional slope model is established, using the FLAC3D and the strength reduction method to excavate slop step by step, comprehensively analyse and evaluate the stability of six slope under four conditions. The consequence which is analyzed by the critical slip field method is compared with the result by strength reduction method,to exaluate the stability of two-dimensional slope. The stability of local three-dimensional slope and the law of vertical and horizontal displacement of slope node in a step-by-step excavation condition are studied.3Studied the influencing factors for slope stability.Through this study, the safety coefficient of slope was determined, and provide scientific basis for the safety in production of enterprises.