综放工作面沿空留巷巷旁充填工艺与矿压监测研究  

Filling technology and mine pressure monitoring for gob-side entry retaining in fully mechanized caving face

作　　者：段计伟 DUAN Jiwei(Jineng Holding Coal Group,Datong 034001,China)

机构地区：[1]晋能控股煤业集团,山西大同034001

出　　处：《煤炭工程》2023年第4期65-70,共6页Coal Engineering

摘　　要：为解决综放工作面煤柱留设宽度大、上隅角瓦斯超限问题,以野川煤矿3205工作面为研究对象,采用理论分析、数值模拟、现场试验相结合的方法,研究了沿空留巷巷旁充填工艺,建立了沿空巷道矿压监测方案,分析了巷道围岩变形特征与巷旁充填体强度。研究结果表明:充填体参数的最优选择为充填体宽度1.5 m,充填体强度为25 MPa。为了验证沿空留巷运行效果,对留巷段变形量与充填体强度进行监测,设计了相关的测站布置与监测方法,得出了沿空巷道总高最大变形量为0.5 m,总宽最大变形量为0.6 m,巷道运行效果较好,可以满足矿井的应用要求。该研究内容为具备类似采矿地质条件及工程难题的矿井提供了技术借鉴。Aiming at the large width of coal pillar and gas overrun in upper corner of fully mechanized caving face,taking 3205 working face of Yechuan Coal Mine as the research object,the roadside filling technology of gob-side entry retaining was studied using theoretical analysis,numerical simulation and field test,the mine pressure monitoring scheme of gob-side entry retaining was established,and the deformation characteristics of surrounding rock and the strength of roadside filling body were analyzed.The results show that,the optimal width of filling body is 1.5 m and the strength of filling body is 25 MPa.When the working face advances 300 m,the maximum deformation of the total height of the roadway is 0.5 m,and the maximum deformation of the total width is 0.6 m.At this time,the overall deformation of the roadway is stable,and the roadway operation effect is favorable,which can meet the requirements of the mine.

关 键 词：综放开采 沿空留巷 巷旁充填体 矿压监测 围岩变形 

分 类 号：TD353[矿业工程—矿井建设]