The Analysis Of Mountainous Coal Mining Landslide Terrain Condition

About a third of the coal mine is located in the mountains in our country,themountainous coal mine surface has been through varying degrees of damage in theform of mining landslide. In order to exploitation of coal resources effectively andensure the safety of mine production, The research of mining slope instabilitymechanism has important theoretical significance and practical value.This paper select a certain mine in Shanxi Province as the research object toachieve numerical simulation analysis combined with mechanical theory on the basisof measured data and surface movement prediction. By analyzing the impact of terraincharacteristics on mining landslide, this paper figures out the formation mechanism ofmining landslide, constructs method to predict potential landslide area and providestechnical methods for mining landslide prediction and damage evaluation, the mainwork is reflected in the following five aspects.(1) On the basis of analyzing measured data,clarify main factors which influencemining slope stability contain overburden soil layers’ physical properties andhydrological conditions, the surface irregularity of tensile cracks.(2)Apply deletion algorithm based on two-dimensional Hashtable formultitudinous elevation points data to solve the problem of time consuming andmemory occupation of massive data. Compared with duplication deletion algorithmbased on direct order, this algorithm can both satisfy the accuracy requirements andensure higher efficiency.(3) Through analyzing the interaction between discrete points in space, this paperapplies a secondary mobile trend surface fitting model to, and assure required accuracyof fitting points to determine the scope of the impact, extracts surface factors toprepare for the next research.(4) Use limit equilibrium method established under Mohr-Coulomb conditions to analyze the instability of the surface critical inclination which is produced by slopeunder the external mechanical parameters unchanged, and eventually identify potentiallandslide area. The forecasting results are basically consistent with the situation on theground, providing a scientific basis for mining landslide prediction.(5) This paper analyzes the formation mechanism of mining crack, application thetheory of elastic plane and the finite element method. Calculate the surface stress todetermine mining fracture distribution and analysis of the superimposed effect of thecrack on the landslide.It provides a basis for the analysis of mining landslide and anew prediction method.