摘要
以4206孤岛综放工作面为研究对象,采用理论分析和数值模拟对工作面回风巷隔水煤柱宽度留设进行了研究。研究结果表明:高应力条件下隔水煤柱留设20m满足理论要求,符合防治水规定。回风巷隔水煤柱留设25m,使巷道明显处于应力降低区,有利于巷道围岩控制及灾害预防,研究成果为高应力条件下的隔水煤柱留设提供参考。
Taking 4206 isolated island fully mechanized top coal caving face as the research object,the theoretical analysis and numerical simulation were used to study the width retention of the coal pillars in the return airway of the face.The results of the study show that:under highstress conditions,leaving 20 m of water-proof coal pillars meets the theoretical requirements and meets the water control regulations.Retaining 25 m of coal pillars in return air lanes will make the tunnel obviously in the stress reduction zone,which is conducive to the surrounding rock control and disaster prevention of the tunnel.
作者
李昌虎
李高奇
Li Changhu;Li Gaoqi(Taiyue Branch of Shandong Energy Zao Mining Group Mining Management Company,Changzhi 046599;Safety Supervision Bureau of Shandong Energy Zao Mining Group,Zaozhuang 277132)
出处
《中阿科技论坛（中英文）》
2020年第5期47-48,共2页
China-Arab States Science and Technology Forum
关键词
孤岛工作面
高应力
隔水煤柱
应力分布
Isolated island working face
High stress
Impermeable coal pillar
Stress distribution
