后堡煤业近距离下煤层巷道稳定性控制研究

Study on Stability Control of Coal Mine in Close Coal Seam of Houbao Coal Industry

为探究近距离煤层群下部煤层工作面安全开采巷道控制措施,在分析后堡煤业1003工作面底板应力传递的基础上,确定了1003工作面运输巷采用内错30 m的布置方式,进行锚杆索补强支护。实践效果表明,1003工作面巷道顶底板移近量稳定在125 mm,两帮移近量稳定在197 mm,顶板岩层离层量基本在10 mm以内,巷道变化处在可控范围内,能够满足矿井正常生产需要。

In order to explore the control measures of safe mining roadway in the lower coal seam face of close coal seam group,based on the analysis of the stress transfer of the floor of Houbao Coal Mine 1003 working face,it is determined that the transportation roadway of 1003 working face should be arranged with an internal stagger of 30 m,and the anchor cable reinforcement support is carried out.The practical results show that the roof and floor displacement of the 1003 working face is stable at 125 mm,the two sides are stable at 197 mm,the roof rock layer is basically within 10 mm,and the roadway change is in a controllable range,which can meet the needs of normal mine production.