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30m,走向错距为47m,3-1煤层工作面回采应滞后2-2煤层工作面1200m。

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.