双煤层协同开采矿井防冲优化设计  

Optimization design of rock burst prevention and control in cooperative mining of double coal seams

作　　者：孙振于 白金正 余波 徐基根 卢安良 武智东 SUN Zhenyu;BAI Jinzheng;YU Bo;XU Jigen;LU Anliang;WU Zhidong(Xuzhou Hongyi Technology Development Co.,Ltd.,Xuzhou 221116,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China;Guodian and Jiantou Inner Mongolia Energy Investment Co.,Ltd.,Ordos 017209,China;Ordos Chengla Mining Co.,Ltd.,Ordos 017300,China)

机构地区：[1]徐州弘毅科技发展有限公司,江苏徐州221116 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]国电建投内蒙古能源有限公司,内蒙古鄂尔多斯017209 [4]鄂尔多斯市成达矿业有限公司,内蒙古鄂尔多斯017300

出　　处：《煤炭工程》2023年第12期1-4,共4页Coal Engineering

基　　金：国家自然科学基金项目(51934007)。

摘　　要：针对双煤层协同开采矿井区域防冲优化设计问题,以纳林河矿区陶忽图煤矿为工程背景,分析得出矿井当前开采设计方案存在的主要问题,包括保护层选择不合理、开切眼或终采线外错、部分区域位于保护范围外、丢失三角煤、对矿井后期大巷保护煤柱的回收不利和矿井前期采掘过于集中等。针对这些问题,从冲击地压防治角度出发提出优先开采2-2煤层作为3-1煤保护层,对大巷布置、工作面布置等进行调整并给出了单翼和双翼双煤层协同开采优化设计方案。并基于矿井地质及开采技术条件,结合相关标准和规范,计算得出矿井双煤层协同开采合理错距和滞后距离:合理倾向错距为30 m,走向错距为47 m,3-1煤层工作面回采应滞后2-2煤层工作面1200 m。Aiming at the problems in optimization design of regional prevention and control of rock burst in cooperative mining of double coal seams, based on the specific engineering conditions of Taohutu Coal mine in Nalinhe Mining area, the problems in the current mining design scheme is found, such as unreasonable selection of protective layer, wrong opening or stop-mining line, some areas are located outside the protection range, loss of triangular coal, adverse recovery of protective coal pillar in the late main roadway and too concentrated mining in the early stage of the mine. In view of the above problems, from the perspective of rock burst prevention and control, it's proposed to mine 2-2 coal seam as the protective seam of 3-1 coal, and make adjustments to the layout of roadway and working face, and give the optimization design scheme of cooperative mining of single wing and double wing coal seam, which can avoid the problems existing in the current mining design scheme. Based on mine geology and mining technical conditions, combining with relevant standards and specifications, the reasonable fault distance and lag distance of cooperative mining of two coal seams in mine are calculated: the reasonable dip fault distance is 30 m, the strike fault distance is 47 m, and the working face of 3-1 coal seam should lag 1200 m behind the working face of 2-2 coal seam.

关 键 词：冲击地压 区域防冲 保护层 多煤层开采 矿井设计 

分 类 号：TD324[矿业工程—矿井建设]