薄煤层智能化工作面过复杂地质构造带的研究

Research on Intelligent Working Face of Thin Coal Seam Passing Through Complex Geological Structural Zone

翟镇煤矿11503工作面为15层东翼首采智能化工作面,推进过程中工作面揭露F19断层(123°∠70°,H=15 m),运输巷揭露F16断层(136°∠70°,H=1.8~2.8 m),存在现场断层落差大、运输巷顶板破碎、重型设备防滑难度大、人员安全站位风险高等一系列问题。通过理论研究、现场试验、方案优化等方法,制定合理的挑顶方案、炮眼优化方案和运输巷注浆方案以及大型重装设备防滑技术等,实现了工作面与运输巷顶板的稳定及安全高效推采过断层,打眼施工效率提高40%,正规循环提高100%,推进速度保证在1.2m/d,解决了重型设备防滑及电液控设备防护的技术难题。

The 11503 working face of Zhaizhen Coal Mine is the first intelligent mining working face on the east wing of the 15th floor.During the promotion process,the F19 fault(123°∠70°,H=15 m)is exposed on the working face,and the F16 fault(136°∠70°,H=1.8~2.8 m)is exposed on the transportation roadway.There are a series of problems such as large on-site fault drop,broken transportation roadway roof,large difficulty in anti-skid of heavy equipment,high risk of personnel safety positioning and others.Through methods of theoretical research,on-site experiments,scheme optimization and so on,reasonable roof lifting schemes,blast hole optimization schemes,transportation roadway grouting schemes,and large-scale heavy equipment anti-skid technologies,etc,are developed to achieve stable and safe efficient pushing of the working face and transportation roadway roof through the fault.The drilling construction efficiency is improved by 40%,the regular circulation is increased by 100%,and the propulsion speed is guaranteed at 1.2 m/d,solving the difficult technical problems of anti-skid and electro-hydraulic control equipment protection for heavy equipment.