薄煤层墩柱充填采煤试验研究

Experimental Study on Pier-column Filling Mining in Thin Coal Seam

为了控制王庄煤矿薄煤层开采时的地表沉陷,本文通过物理模拟、试验测试和工程实践手段研究了墩柱充填开采技术的地表沉陷控制效果。结果表明:模拟试验中的地表下沉系数为0.125,王庄煤矿应用墩柱充填开采技术后的地表下沉系数为0.057,均小于砖混建筑物一级损坏允许值。墩柱充填开采技术有效控制了王庄煤矿地表沉陷。

In order to control the surface subsidence during the mining of thin coal seam in Wangzhuang Coal Mine,this paper studies the control effect of pier pillar filling mining technology by means of physical simulation,test and engineering practice.The results show that the surface subsidence coefficient is 0.125 in the simulation test and 0.057 in Wangzhuang Coal Mine after the application of pier-column filling mining technology,which are less than the allowable value of the first-class damage of brick and concrete buildings.The technology of pillar filling effectively controls the surface subsidence of Wangzhuang Coal Mine.