鄂尔多斯西部煤矿冲击地压治理技术研究

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

为解决给鄂尔多斯西部煤矿安全开采带来严重困扰的冲击地压问题,根据目前已经开采的巴彦高勒、门克庆等煤矿冲击地压显现特征,通过对比、分析本区不同埋深煤矿采区接续工作面受2次采动影响巷道超前工作面区域的矿压显现情况、影响范围及地表塌陷情况,创新提出了采区多工作面回采后上覆岩层呈"多跨叠加拱"的力学模型理论,应用该理论对冲击地压产生的机理进行了全新的解释。再此基础上提出了采用灌注马丽散加固2次采动影响巷道围岩治理冲击地压的方法。最后分析比较了其与传统沿空掘巷治理方法的优缺点和适用条件,针对本区域煤层均属易自燃及水文地质条件较复杂的特点,提出应优先采用灌注马丽散材料加固巷道围岩治理冲击地压的方法。

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.