大采深矿井断层防隔水煤(岩)柱留设的探讨  

Discussion on setting of fault water resisting coal(rock)pillar in large mining depth

作　　者：靳子栋 李冲[1] 王卓[1] 王铁记[1] 王君现 关永强[1] Jin Zidong Li Chong Wang Zhuo Wang Tieji Wang Junxian Guan Yongqiang(Jizhong Energy Fen~eng Group,Handan 056107,China)

机构地区：[1]冀中能源峰峰集团,河北邯郸056107

出　　处：《煤炭与化工》2016年第12期50-52,57,共4页Coal and Chemical Industry

摘　　要：峰峰矿区断裂构造发育,在深部开采的一些矿井,由于水压高,在高压水头和矿山压力联合作用下,断层上盘开采或掘进时,可能发生突水事故,须留设防隔水煤(岩)柱,但由于水压高,留设的防隔水煤(岩)柱尺寸较大,影响正常生产,也不利于断层的导(含)水性、断层带胶结程度及断层带附近煤岩层完整性精准探查。因此,在保证巷道掘进安全的前提下,重新探讨矿井深部断层防隔水煤(岩)柱的留设,通过分析计算巷道掘进期间底板安全隔水层厚度、超前距表格及公式等,决定Ts暂取0.10 MPa/m进行计算留设,既能满足巷道掘进期间底板安全隔水层厚度及超前距,又能为断层的导(含)水性、断层带胶结程度及断层带附近煤岩层完整性进行探查与治理创造条件。Based on fault structure development of Fengfeng Mine, water inrush accidents in some deep mining would be caused easily by high water pressure, as well as joint action of mine pressure and high pressure water head in the process of mining or advancing in upper wall. Therefore, waterproof coal （rock） column should be set. Because of high water pressure and inappropriate size of waterproof coal （rock） column affecting regular production, accurate detection of guide （including） water of fault, fault degree of consolidation, and coal rock integrity near fault zone, setting of fault water resisting coal （rock） pillar was discussed again on the premise of ensure safety of roadway construction. As a result, 0.10 MPa/m was chosen as Ts value to calculate setting through analytical calculation of floor safe thickness of water-resisting layer during roadway construction, advanced distance table and formula, which could not only guarantee its thickness and advanced distance, but create conditions for its accurate detection.

关 键 词：深部开采 奥灰含水层 断层 防隔水煤(岩)柱 底板安全隔水层厚度 超前距 

分 类 号：TD74[矿业工程—矿井通风与安全]