厚土层覆盖浅埋煤层支架适应性分析  

The support applicability in shallow seam mining covered by thick soil

作　　者：张杰[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《西安科技大学学报》2009年第4期396-399,409,共5页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金资助项目(50074023);博士学科点基金资助项目(20050704003)

摘　　要：分析了陕西榆树湾煤矿浅埋煤层开采支架的适应性,揭示了厚土层覆盖浅埋煤层开采条件下覆岩层的破坏规律;模型实验表明工作面初次来压步距为70～75m,工作面初次来压步距相对较大;组合关键层的破断形成大周期来压现象,支架动载系数平均为1.21,支架阻力能平衡顶板压力,满足工作面正常开采时对支护阻力的要求。研究成果对指导工作面采前准备工作具有重要意义。The support applicability in Yu-shu-wan shallow seam mining is studied, the law of rock destroy is drawn through simulation materials experiment. The simulation materials experiment indicates that the first weighting step is 70 - 75 m, the first weighting step is bigger, the reason is combinatorial key strata to be formed in shallow seam mining. The change coefficient of support load is 1.21, the support can balance the load of the rock and can meet the requirement of normal mining. Through the study the important science basis for Yu-shu-wan mining is provided.

关 键 词：榆树湾煤矿 厚土层覆盖 浅埋煤层 支架适应性 

分 类 号：TD355[矿业工程—矿井建设]