Study On Jinjie Coal Mine Main Controlling Factors Of Mining Subsidence Coefficient And Overlying Strata Movement Law

After mineral resources are taken out, undermining the original stress balance anddistribution of rock mass, causing the surrounding rock movement, deformation anddestruction, finally, the internal stress redistribution rock to reach a new equilibrium. In thisprocess, so that the Overlying and surface to produce a continuous movement, deformation anddestruction of non-continuous (fracture, caving, etc.), a phenomenon known as―miningsubsidence‖. The main research―mining subsidence‖is a complex issue mining damage.Currently, the study abroad more mature mining subsidence, Our mining subsidence is mainlyfocused on the exploration and mining of thin loose layer of thick alluvium eastern miningsubsidence study the issue, and for Jinjie Coal Mine of Shendong mining area aeolian sandmining subsidence studies involving less.By Jinjie Coal Mine of Shendong mining area mining subsidence main factors and theanalysis and study of mining subsidence Jinjie Coal Mine main factor numerical model andstrata movement of the numerical model, we can reveal the conditions under cover of aeoliansand mining Jinjie Coal Mine subsidence Rules and proposed aeolian sand cover surfacemining subsidence prediction model Jinjie Coal Mine conditions and strata movement for JinjieCoal Mine subsidence prediction of surface mining, mining safety and the protection providedground reference. In this paper, using the analytic hierarchy process (AHP), orthogonal test,variance analysis and3DEC numerical simulation software is a comprehensive study,completed its work on the following aspects:（1）Geological information relating to income sector highlights mine and mine in JinjieCoal Mine rock samples collected for processing and testing of coal and rock mechanicalparameters obtained Jinjie Coal Mine;（2）According Jinjie Coal Mine geological data, the use of the Analytic HierarchyProcess (AHP) Screening main factors Jinjie Coal Mine mining subsidence.（3）According Jinjie Coal Mine31106Comprehensive Face histogram chart and JB203-1drilling, with3DEC software for mining subsidence main factors were orthogonalsimulation test, and draw a common role in the multivariate analysis of variance under theanalytic hierarchy process (AHP) and linear regression analysis sector mining subsidence mainfactors of sensitivity and function. Finally the establishment of mining subsidence predictionmodel of Jinjie Coal Mine.（4）Through the study of numerical simulation of mobile mine Jinjie Coal Mineoverburden, the Jinjie Coal Mine31106working face overburden layer is a single key. Themovement of overlying strata is nonlinear, from the roof of coal seam is near, the greater theamount of sinking; with the advance of the working face, above the working face roofsubsidence and subsidence range increasing. Rock movement not only directly with thedistance from the top on the distance, but also with the strata lithology, thickness and the keylayer.The results of the study for the future Jinjie Coal Mine and Shendong mining area, thesurface subsidence prediction and provide certain scientific basis for prevention and controlwork effectively to carry out.