Study On Key Factors Influencing Slope Stability And Integration Of Mining And Slope Control In Surface Mines

This paper uses surface coal mine slope as the object of study, comprehensively analyses the factors that affect surface coal mine slope, determines the key factors that affect slope stability--mechanical parameters of rock, water, and surface mining conditions; researches the spatial and temporal distribution characteristics of surface coal mine slope rock's mechanical properties Under normal circumstances, the greater the depth, the better the mechanical properties of rock; the longer materials accumulated, the better the mechanical properties of rock; by using theoretical analysis and physical model to analyze and research the hydrostatic pressure distribution of slope, proposes a new reasonable distribution of slope water pressure; puts forward a new formula for calculating the inclination based on the timeliness slope theory and slope stability analysis, analyzes the relationship between the critical inclination and other parameters of the slope.After inner-dumping with burying slope of flatted surface coal mine, the height of the end-slope reduced, the timeliness of end-slope in surface coal mines was studied based on the relation-ship between end-slope of surface coal mines, inner dump and working slope. The influences of mining parameters on end-slope exposure were analyzed with the exposing time of end-slope as the criterion for valuing the timeliness of end-slope, according to comparative analysis to changes in coefficient of stability before and after the burying slope of end-slope as well as the given estimating standard, through analysis key elements that affecting surface coal mine slope stability, established integrating operation of surface mining and slope control treatments, by the means of pre-mining simulation analysis and post-mining slope monitoring, analyzed the reasonable surface mining sequence, materials accumulating process and reasonable mining process. This paper studied several actual projects to prove the correctness and effectiveness of the research contents, provided correct, concise methods for the slope stability analysis, to make the slope stability analysis closer to the actual situation, it has great significance for the enrichment and development of surface mining design theory and practical application.