屯宝煤矿逆断层破碎带巷道变形控制研究  

Research on deformation control of roadway in reverse fault fracture zone of Tunbao Coal Mine

作　　者：刘明 曹民远 吴玉海 李波 LIU Ming;CAO Minyuan;WU Yuhai;LI Bo(Tunbao Coal Mine,Shenhua Xinjiang Energy Co.,Ltd.,Changji 831114,China)

机构地区：[1]神华新疆能源有限责任公司屯宝煤矿,新疆昌吉831114

出　　处：《工矿自动化》2020年第4期98-103,共6页Journal Of Mine Automation

摘　　要：针对屯宝煤矿逆断层破碎带煤柱侧巷道受采动影响造成的巷道变形量大、巷道底鼓、煤柱侧帮鼓、巷道顶板局部下沉等问题,采用锚杆测力计对锚杆应力进行监测,采用PASAT-M应力探测方法对逆断层煤柱侧巷道应力分布和巷道变形规律进行了研究。研究结果表明:胶带巷煤柱侧锚杆应力峰值出现在超前工作面10~15 m,轨道巷上帮锚杆应力峰值出现在超前工作面5~10 m;巷道不同位置的锚杆应力、围岩应力及巷道变形量均受T 2逆断层影响,应力和变形量集中分布在逆断层附近;距离逆断层25 m内围岩应力中等危险区分布相对集中。根据研究结果,提出了巷道补强支护和大孔径卸压综合治理措施,工程实践结果表明,该措施为围岩提供了稳定的支护力,适用于屯宝煤矿逆断层影响区域围岩变形的防治。In reverse fault fracture zone of Tunbao Coal Mine,the coal pillar side roadway is affected by mining,which leads to large roadway deformation,roadway floor heave,coal pillar side wall heave,and local subsidence of roadway roof.Anchor stress was monitored by anchor dynamometer,and roadway stress distribution and roadway deformation were studied by means of PASAT-M detection.The results show that the peak value of anchor stress on coal pillar side of belt roadway appears at 10-15 m of the leading working face and the one of anchor stress on upper side of track roadway appears at 5-10 m of the leading working face.The anchor stress,surrounding rock stress and roadway deformation at different positions are all affected by T 2 reverse fault,and the stress and deformation are distributed near the reverse fault.The medium risk area of surrounding rock stress is relatively concentrated within 25 m from the reverse fault.According to the research results,a comprehensive control measure of roadway reinforcement and large pore pressure relief was proposed.The results of engineering practice show that the measure provides a stable supporting force for surrounding rock and can apply to preventing and controlling surrounding rock deformation in the area affected by the reverse fault of Tunbao Coal Mine.

关 键 词：综放工作面 围岩控制 逆断层破碎带 预留煤柱侧巷道变形 锚杆应力 补强支护 

分 类 号：TD712[矿业工程—矿井通风与安全]