Study On Regularity And Application Of Surface Subsidence Due To Mountain Mining

China’s coal resources are abundant, but most of them are buried in the complicated area. According to incomplete statistics, about 1/3 of China’s coal resources are in the mountain area. The effect of underground mining on mountain surface is much larger than on the plain area, the surface will surfer some non continuity damage, such as cracks, landslide and slip.Taking Jin Cheng mining area as the research object, combined with four working faces measured data, this paper analyzes the mountainous mining surface movement and deformation regularity and particularity. Besides, mountainous mining surface movement and deformation mechanism and influencing factors is analyzed by theory and numerical simulation method. Finally, using Matlab prepared for Jin Cheng mining area of mountainous mining subsidence prediction software, the main results are as follows:(1)Taking 4 working faces of Jin Cheng mining area as the research object, based on the measurement of the earth’s surface observation station data, this paper analyzed surface characteristics of the curve of each mobile, obtain the working surface of the surface movement angle value parameters, the predicting parameters of probability integral method and the mountain mining surface subsidence rule.(2)Based on the analysis and research of the Jin Cheng mining area four working faces,this graduate thesis researches and analyzes the mining surface movement deformation particularity respective in three aspects: effect of topography on deformation of surface movement, the influence of topography on the surface movement angle parameters,effect of slope sliding on the surface movement and deformation.(3)Combined with a mountainous area mining slope sliding mode theory, this paper reveals the two mining mechanism of slope sliding, draw the Jin Cheng mining area slope sliding belonging to the rock along the slope to the sliding mode; summarized the main factors that affect slope sliding, and analyzes the effect of various factors on Jin Cheng mining area mining slope sliding.(4)Using the method of numerical simulation to study the influence of different factors on the mountain mining development regularity of surface movement and deformation. According to the dynamic ground movement and deformation of the influence factors of mountainous mining, using UDEC numerical simulation method to study mountain mining surface movement rules under the condition of the different slope body, different forms of slope, different surface propulsion direction and different surface position.(5)According to the regularity of surface movement and deformation of mining area in Mountainous Areas, using prediction model of surface movement and deformation in mountainous area in the "three under" coal mining regulation, prepared the software by Matlab for mining subsidence prediction in Jin Cheng mining area, then carried out the software correctness verification in the case of Jin Cheng mine area.