近距煤层群上行开采技术研究  

Study on closed multiple-seam in the ascending mining technology

作　　者：张宏伟[1] 韩军[1] 海立鑫 李明 乔鸿波 

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]阜矿集团内蒙古白音华能源公司,内蒙古锡林郭勒026200 [3]中煤国际北京华宇西安分公司,陕西西安710060 [4]内蒙古国电能源投资有限公司产业开发分公司,内蒙古呼和浩特010020

出　　处：《采矿与安全工程学报》2013年第1期63-67,共5页Journal of Mining & Safety Engineering

基　　金：辽宁省教育厅科技研究项目(2009S047)

摘　　要：针对阜新矿区清河门矿近距离煤层群实施上行开采的技术条件(采动影响系数2.7),综合应用理论分析、数值计算、相似材料模拟和现场探查等方法,对3-2煤采后3-3煤的连续性和完整性进行了研究,确定了下煤层开采后上煤层的结构变化特征,在此基础上确定了3-3煤上行开采巷道布置方案。实践表明,当上煤层位于下煤层开采的垮落带上方时,上煤层及其顶底板整体性遭到一定的破坏,但仍能保持连续性,随着下煤层开采后时间的流逝,煤层中形成的裂隙和断裂逐步"愈合",煤层的整体性得到改善,满足了开采所需的条件。The research concerns the closed multiple seam ascending mining technology （mining in- duced influenced coefficient 2.7） of Qinghemen coal mine, Fuxin mining area. Theoretical analysis, numerical calculation, similar material simulating experiment and on-site exploration are applied com- prehensively in the integrity and continuity of 3-3 coal seam after the 3＇2 coal seam mined. Based on the stress state and structure variation of 3-3 coal seam, the roadway layout is designed. The 3-3 coal seam mining practice indicates that when the above coal seam lied on the caving zone of low coal seam, the integrity of the above coal seam could still maintain continuity and integrity, because the formation of cracks and fracture could gradually ＂healed＂, which improved the integrity of coal to meet the conditions necessary for mining.

关 键 词：近距煤层群 上行开采 采动影响系数 现场探测 

分 类 号：TD325[矿业工程—矿井建设]