Study on control technology of rockburst in coal mines of Western Erdos

In order to solve the problem of rockburst which brings serious distress to coal mine safety mining in western Ordos,according to the Bayan Gol,Menkerqing and other coal mine rockburst at present,the characteristics are mainly contrasted and this paper analyzes the mining pressure appearance,the influence range and the surface subsidence in the mining area of the different buried and deep coal mine in this area,and puts forward the mechanical model theory of “multi-span superimposed arch” of the overlying strata after mining in the mining area,and uses this theory to explain the mechanism of the rockburst.On the basis of the above,the method of controlling the rockburst by using the pouring Malisan to reinforce two mining is proposed.After analyzing and comparing the advantages and disadvantages of the traditional approach to roadway excavation and the applicable conditions,according to the characteristics of the coal seam in this area,which are prone to spontaneous combustion and more complicated hydrogeological conditions,it is suggested that the method of controlling the rockburst should be given priority by pouring Malisan material to reinforce the roadway surrounding rock.