高应力软弱厚煤层沿空巷道矿震风险控制  

Risk Control of Mining Earthquake in Gob-side Roadway in High Stress Weak and Thick Coal Seam

作　　者：芦盛亮 高学鹏 LU Shengliang;GAO Xuepeng(Yuwu Coal Mine of Lu′an Chemical Group Co.,Ltd.,Changzhi 046100,China;Key Laboratory of the Ministry of Education for Safe Mining of Deep Metal Mines,Northeastern University,Shenyang 110819,China;Institute of Disaster Rock Mechanics,Liaoning University,Shenyang 110136,China)

机构地区：[1]潞安化工集团有限公司余吾煤业有限责任公司,山西长治046100 [2]东北大学深部金属矿山安全开采教育部重点实验室,沈阳110819 [3]辽宁大学灾害岩体力学研究所,沈阳110136

出　　处：《煤炭技术》2024年第5期91-95,共5页Coal Technology

摘　　要：矿震是深部高应力回采巷道失稳的重要原因,以余吾煤业N2106回风巷为例,开展了高应力软弱厚煤层沿空巷道矿震风险控制研究,研究结果表明:(1)巷道对回采扰动的敏感性极强,最大影响范围为397 m。(2)大能量微震事件密集分布于巷道煤柱帮侧围岩,巷道底煤和两帮是容易出现破坏的部位。(3)巷道失稳破坏的临界应力条件为18.41 MPa,单位长度巷道煤体释放能量为2.29×10^(6)J,顶板释放最大能量为8.6×10^(7)J。(4)提出采用应力和能量的协同控制策略对矿震进行防治设计。Mine earthquake is an important reason for the instability of deep mining roadway with high stress.Taking the N2106 tailentry of Yuwu coal mine as an example,the risk control research on mining earthquake in goaf roadway of high stress weak and thick coal seam is carried out.The research results show that:(1)The roadway is highly sensitive to mining disturbance,and the maximum influence range is 397 m.(2)The microseismic events with large energy are densely distributed in the surrounding rock of coal pillar side of roadway,and the bottom coal and two sides are areas prone to damage.(3)The critical stress condition of roadway instability failure is 18.41 MPa,and the energy released by the coal body per unit length of roadway is 2.29×10^(6) J,the maximum energy released by the roof is 8.6×10^(7) J.(4)The collaborative control strategy of stress and energy is proposed to prevent and control the mine earthquake.

关 键 词：高应力 厚煤层 留底煤 矿震 

分 类 号：TD322[矿业工程—矿井建设] TD353