Study On Strip Mining Scheme Optimize Under Village In Wannian Coal Mine

As a major measure for mining under three,strip mining has been widely used inChina’s major coal group company. Its outstanding characteristic that can effectivelyreduce the surface subsidence,protect the surface buildings built.Defection caused by stagnation pressure sure in the building of building sun waster of coal resource.However,thestrip mining can keep the stability of the building in the maintenance of the surface on theearth under the premise of lining,reuse the waste of carbon resources of the waste.It alsoextended the life of the mine,eased the workers and peasants relations,reducing the cost ofmining production,this aspect is particularly important for some of the old coal mines in along time. So the sustainable development of coal enterprises,therefore,with theoptimization of mining Strip coal pillar,has become an urgent task.In this paper,the research of the geological conditions of Wannian Coal Mineproduction condition of mine and considering surface built on the factors of buildingmaterials.Through the analysis of the overlying strata of the coal bed Rock stratum andLithology,occurrence conditions.The relationship between sink coefficient and miningdepth and the width of strip mining where determined by the method of pressure arch andcombined with the method of probability integral theory.The application of FLAC3Dnumerical simulation validation,comprehensive analysis to deter mine the optimized coalpillar mining width,retaining width.Finally,the results show that the optimized strip coalpillar has enough supporting strength and stability,the recover of coal seam over burdenwill not cause wavy sinking.Comply with the provisions of level ground building“provisions” of the mining damage Street movement and deformation values and thesurface deformation cause by,for the enterprise to improve economic efficiency,to providean effective theoretical basis and technical experience to extend the service life of mine.