大倾角煤层开采覆岩结构分析  

Analysis on Overburden Structure in the Mining of Deeply Inclined Coal Seam

作　　者：戎虎仁[1,2] 王连国[1] 王占盛[1,2] 周冬磊[1,2] 黄继辉[1,2] 

机构地区：[1]中国矿业大学深部岩土力学及地下工程国家重点实验室,江苏徐州市221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州市221008

出　　处：《矿业研究与开发》2012年第2期18-21,共4页Mining Research and Development

基　　金：国家自然科学基金项目(50874103);国家重点基础研究发展计划(973计划)项目(2010CB226805);江苏省自然科学基金项目(BK2008135)

摘　　要：相对于缓倾斜和近水平煤层而言,大倾角煤层开采后覆岩结构特征有所不同,研究大倾角煤层开采覆岩结构特征,对现场实践和安全生产具有重要的指导意义。针对霍州矿区庞庞塔5-103工作面,采用数值计算软件FLAC3D、UDEC分别模拟了不同倾角下煤层开采过程中应力场的演化以及覆岩的破坏过程。通过对比分析,总结了随倾角变化应力场、"三带"的演化特征及煤壁、底板的破坏规律。Compared to the mining of gently inclined coal seam and flat seam,the overburden structure of coal swam with large inclined angle is of different characteristics after mining.So the study of overburden structure in mining deeply inclined coal seam has a great significance to production practices and the safety in production.In view of situation of 5-103 working face located in Pangpang Ta mining area of Huozhou coal mine,the evolution of stress field and the process of overburden failure during mining coal with different inclined angle were simulated by software FLAC3D and UDEC.With the change of irctined angle,the evolution characters of stress field and ＂three zones＂ and the failure law of coal wall and floor were summarized from the contrastive analysis.

关 键 词：大倾角煤层 应力场分布 覆岩结构 数值模拟 

分 类 号：TD323[矿业工程—矿井建设]