论文部分内容阅读
以某矿综放工作面T1回风巷为研究对象,结合现场调研和实验室测试得出巷道煤岩物理力学特性;基于综放工作面回采过程中T1回风巷围岩变形离层和应力值的现场实测结果,得出巨厚煤层顶板煤巷围岩变形及支承压力分布特征;建立T1采动煤巷数值计算模型,分析原支护方案下巷道围岩支护安全性;综合巷道顶板煤岩性质测试、离层和应力现场实测及原支护方案支护安全性模拟结果,对巷道锚杆支护参数进行优化,并将优化后方案进行支护验证,效果良好。
Taking the T1 return airway of fully mechanized coal caving face in a mine as the research object, the physical and mechanical characteristics of the coal and rock in the roadway are obtained by field investigation and laboratory test. Based on the deformation and stress of the surrounding rock of T1 return airway in the process of the recovery of the fully mechanized top coal caving face Value of the field test results, the thick coal seam roof coal roadway deformation and supporting pressure distribution characteristics; established T1 mining coal seam numerical calculation model, analysis of the original roadway surrounding rock support safety; comprehensive roadway roof Coal and rock properties test, field and stress field measurements and support safety simulation results of the original support scheme are optimized to optimize the bolting parameters of the roadway, and the optimized scheme is verified by the support with good results.