沿空顺槽支护优化及效果考察

潞宁煤矿5318运输顺槽为沿空顺槽,为分析其矿压显现规律,从5318运输顺槽煤岩理化性质、用途确定了巷道位置及断面形状,结合理论确定了巷道支护参数,并对支护效果进行考察.结果表明,主动的锚杆支护比被动的架棚支护效果明显改善,回采受影响变形量约占总量的88％,巷道两帮移近量中煤柱一侧的移近量占主要部分,支承压力显著影响范...

Investigation on the Support Optimization and Effect Along Goaf

The 5318 haulage channel of Luning Coal Mine is along the goaf.In order to analyze its mine pressure behavior law,the roadway position and section shape are determined from the coal rock physical and chemical properties and uses of 5318 haulage gateway.Combined with the theory,the roadway support parameters are determined,and the support effect is investigated.The results show that the active than passive shed shoring,the effect is improved obviously,mining affected deformation accounted for about 88% of the total,amounts of two nearer the magnitude of the nearer side of coal pillar in the main part,scope of abutment pressure significantly affect up to 30 m.