摘要
Abstract
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.关键词
薄煤层/智能开采/断层/注浆Key words
thin coal seam/intelligent mining/fault/grouting分类
矿业与冶金
