厚煤层综放开采顶煤运移及应力分布规律的数值分析  

NUMERICAL ANALYSIS ON TOP COAL MOVEMENT AND STRESS DISTRIBUTION IN MECHANIZED TOP CAVING MINING OF THICK COAL SEAM

作　　者：谢俊文[1] 王金安[1] 韦文兵[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《中国矿业》2005年第10期56-59,共4页China Mining Magazine

摘　　要：通过数值模拟分析,提示了厚煤层综放开采时顶煤运移和应力分布规律。在支架围岩相互作用过程中,支架顶梁有一个先承载后卸载的过程。根据顶煤所受控制作用的不同,对顶煤沿垂向进行了分区,而根据应力场、破坏场和位移场分布,对顶煤沿走向进行了分区,对现场实施岩层控制、提高顶煤回收率具有指导意义。Through numerical simulation and analysis, the top coal movement and stress distribution in mechanized top caving mining of thick coal seam is revealed. In the interaction process of surround rocks and support, the roof beam suffers from loading and unloading experience. According to the control effect the top coal is can be distinguished into three parts along vertical direction, and according to the distribution of stress, displacement and broken zones, the top coal into five parts along horizontal direction.

关 键 词：厚煤层 综放 顶煤运移 顶煤分区 

分 类 号：TD823.49[矿业工程—煤矿开采]