综放工作面基本顶层位与极限跨距确定  

Determining of Basic Roof Strata and Limit Span in Fully Mechanized Caving Face

作　　者：师皓宇[1] 田多[1] 

机构地区：[1]华北科技学院安全工程学院,北京东燕郊101601

出　　处：《华北科技学院学报》2016年第1期70-74,共5页Journal of North China Institute of Science and Technology

基　　金：中央高校基本科研业务费资助(3142013100);华北科技学院基金资助项目"注浆技术在地质构造带的加固机理及应用研究"(JWC2013B03)

摘　　要：为确定中煤平朔集团井工一矿4106综放工作面基本顶层位和极限跨距,考虑基本顶沉降值、采空区残留浮煤厚度、碎胀系数等因素,初步确定了采空区的冒落带理论高度;根据覆岩结构向高位转移后的平衡条件,判断顶板上方13.12 m以远的粗砂岩为基本顶1;根据组合梁等理论公式,计算了该工作面顶煤、直接顶、基本顶的载荷值,确定了顶煤、直接顶、基本顶的初次垮落步距、周期垮落步距,结果与矿压观测结果基本吻合。For determining basic roof strata and Limit Span of 4106 Fully Mechanized Caving Face in Pingshuo Coal Industry Company No. 1 Coal Mine,considered sedimentation value of basic roof and residual floating coal thickness of mined out area and coefficient of expansion,preliminary determined theoretical height of mined out area. According to the equilibrium condition of overlying rock structure shift to high strata,Judge basic roof 1 is sandstone beyond roof 13. 12 m distance. According to combination beam theory formula,calculated load value of top coal the immediate roof basic roof in the face,initial caving step distance and periodic caving step distance,The results are in agreement with the results of mine pressure observation.

关 键 词：综放工作面 基本顶 层位 极限跨距 

分 类 号：TD323[矿业工程—矿井建设]