摘要
某矿3206不规则孤岛工作面受周围采空区侧向支承压力影响,发生冲击地压的危险性高。采用FLAC^(3D)模拟该工作面回采期间应力分布规律,得到不规则区域是冲击地压防治的重点。采用煤层注水和钻孔爆破对危险区域进行超前卸压,通过钻屑法对卸压效果进行检验,卸压后最大煤粉量均未超过3.0 kg/m,卸压效果明显,实现了防治冲击地压的目的。
The 3206 irregular isolated island working face of a mine is affected by the lateral support pressure of the surrounding goaf,and the risk of rock burst is high.FLAC^(3D)is used to simulate the stress dis⁃tribution of the working face during mining,and the irregular areas are the focus of rock burst prevention and control.The coal seam water injection and drilling and blasting were used to advance pressure relief in hazardous areas.The pressure relief effect was tested using the drilling debris method,and the maximum amount of coal powder after pressure relief did not exceed 3.0 kg/m.The pressure relief effect was obvious,achieving the goal of preventing and controlling rock burst.
作者
董元涛
DONG Yuantao(Shanxi Changzhi Suburb Sanyuan Nanyao Ji'an Coal Industry Co.,Ltd.)
出处
《现代矿业》
CAS
2023年第9期102-105,共4页
Modern Mining
关键词
孤岛工作面
不规则
冲击地压
煤层注水
isolated islandworking face
irregular
rock burst
coal seam water injection
作者简介
董元涛(1982-),男,助理工程师,硕士,046000山西省长治市。
