浅埋煤层连采连充岩层控制研究

Study on the Control of Continuous Mining and Charging Rock Layer in Shallow Buried Coal Seam

为了研究连采连充充填体、煤柱及覆岩应力应变特征,本文以某煤矿51106工作面巷式充填为背景建立了相关物理相似模型,通过将物理实验和数值试验结果进行对比,建议连采连充首采面51106工作面充填率应不低于95%,充填体弹性模量不低于1 GPa,采充轮次为3,充填体单轴抗压强度不低于5 MPa。

In order to study the stress-strain characteristics of the filling body,coal pillar and overburden of continuous mining and charging,this paper establishes the relevant physical similarity model with the background of the roadway charging of 51106 working face in a coal mine.By comparing the results of physical and numerical tests,it is recommended that the filling rate of 51106 working face should be not less than 95%,the elastic modulus of the filling body should be not less than 1 GPa,the number of mining and filling rounds should be 3,and the uniaxial compressive strength of the filling body should be not less than 5 MPa.