Study On The Regularity And Control Of Slope Instability By Mountain Coals Mining In Faer Mine

In this paper,according to the practical problems of the ear hair coal mine,on the basis of predecessors' study of mountain mining,respectively through the theory analysis and analog simulation and numerical simulation methods,such as the mountain occurrence conditions of coal seam group mining strata movement rule,subsidence of slope and slope movement damage such as line,at the same time of coal seam mining law of slope instability induced landslide is studied.Based on the analysis of geological data,the basic information of the natural geometry of the mountain slope,the position of the key strata of overburden,and the geological conditions of coal seam mining were obtained.The physical model is established by using similar simulation to study the development law of overburden and slope surface fractures,the deformation and failure law of slope body,and the movement and failure range of slope surface in the process of coal seam group mining.By using UDEC numerical simulation software,the subsidence law,slope Angle variation range,crack development law and slope surface sliding law of the slope in the process of repeated mining are analyzed.According to the rules of slope deformation and instability obtained in the mining process,the mechanical model was established to analyze the mechanism of slope instability and sliding,and the characteristics of slope deformation and instability in coal seam group mining under different conditions were analyzed.The mechanism of landslide induced by mining slope instability is studied.Combine the traditional mountain instability of landslide prevention and control measures and coal seam mining technology,according to the geological conditions of the ear hair ore,puts forward prevention measures,the state of the numerical simulation software for safety non-slip coal pillar width is studied,put forward the prestressed anchor cable,abscission layer grouting technology as backup auxiliary measures,such as to ensure slope stability under the condition of mining.