同忻矿8201运巷过上覆矿界煤柱强矿压防治技术研究  

Study on Prevention and Control Technology of Strong Ground Pressure of the 8201 Haulage Roadway Passing through Overlying Coal Pillar in Tongxin Mine

作　　者：马万里 Ma Wanli(Shanxi Jinneng Holding Coal Industry Co.,Ltd.,Shanxi Datong 037000)

机构地区：[1]山西晋能控股煤业,山西大同037000

出　　处：《山东煤炭科技》2021年第8期186-188,192,195,共5页Shandong Coal Science and Technology

摘　　要：同忻矿8201运输巷上覆岩层存在采空区、矿界预留煤柱等问题,导致巷道掘进过程中围岩应变失衡。为解决该问题,现采用数值模拟的方法对整个掘进巷道围岩应力、应变情况进行模拟研究,通过耦合模拟运算得出巷道周围应力的失衡情况,即左帮应力演变速率比右帮慢,左帮最低点为1.19×10^(8) Pa,右帮最低点为1.12×10^(8) Pa,现场制定的措施为施工卸压孔结合木垛支护。治理措施实施完成后有效地控制了巷道内强矿压失衡现象。The overlying strata of the 8201 haulage roadway in Tongxin Mine have some problems such as goaf and coal pillar reserved in the mine boundary,which lead to the imbalance of surrounding rock strain in the process of roadway excavation.In order to solve this problem,the numerical simulation method is used to simulate the stress and strain of the surrounding rock of the whole driving roadway.Through the coupling simulation calculation,the stress imbalance around the roadway is obtained,that is,the stress evolution rate of the left side is slower than that of the right side,and the lowest point of the left side is 1.19×10^(8) Pa,the lowest point on the right side is 1.12×10^(8)Pa,and the measures formulated on site are pressure relief hole construction combined with wood pile support.After the implementation of the control measures,the imbalance of strong mine pressure in the roadway is effectively controlled.

关 键 词：预留煤柱 数值模拟 卸压孔 木垛支设 

分 类 号：TD322[矿业工程—矿井建设]