曹村矿近距离煤层群下位煤层巷道布置分析  

Analysis on Gateway Layout in Seam Underlying of Seam Group with Closed Distance in Caocun Mine

作　　者：张随喜[1,2] 张东升[2] 王旭锋[2] 张国红[2] 

机构地区：[1]山西焦煤集团曹村煤矿有限责任公司,山西霍州031401 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭工程》2012年第1期46-48,共3页Coal Engineering

基　　金：中国矿业大学中央高校基本科研业务费专项资金(2010ZDP02B02)中国矿业大学青年科研基金项目(2008A003;2009A001);煤炭资源与安全开采国家重点实验室自主研究课题项目(SKLCRSM08X02);江苏省"333高层次人才培养工程"项目(苏人才2007-6号文);国家自然科学基金青年基金资助项目(51004101;50904063)

摘　　要：文章结合曹村矿近距离煤层群具体地质条件,实测下位煤巷分别为内错、重叠、外错三种布置方式的巷道变形规律。研究表明,巷道内错布置时围岩变形量比重叠和外错布置时小,且随内错距离增大围岩变形量减小,内错5m布置时,顶底板移近量174.5mm,两帮移近量142.6mm,当内错距离增大到10m时,顶底板移近量142mm,两帮移近量132mm。当巷道内错3～6m布置时,巷道围岩变形量较小,顶底板移近量181～167mm,两帮移近量148～140mm,综合考虑回采率等因素,认为下位煤层巷道内错3～6m较为合理。In combination with the certain geologlcal conditions of the seam group with a close distance in Caocun Mine, the deformatiou law of the gateway with iuner alternate, overlap and out alternate layout in the underlying seam was measured. The study showed that when the gateway was a inner alternate layout, the deformation of the surrounding rock would be lower than the overlap and out alternate layout and when the inner alternate distance increased, the deformation of the surrounding rock would be reduced. When the inner alternate layout with 5m, the convergence between the roof and floor would be 174. 5ram and the convergence between the two sidewalls would be 142. 6ram. when the inner alternate layout with 3 -6m, the surrounding rock defornmtion of the gateway would be lower, the convergence between the roof and floor would be 181 - 167mm and the convergence between the two sidewalls would be 148 - 140mm. In eonsideration of the mining rate and other factors, the inner alternate with 3 -6m of the gateway in the underlying seam would be rational. Keywords： seams with closed distance; site measurement analysis; gateway layout; seam group

关 键 词：近距离煤层 变形实测分析 巷道布置 煤层群 

分 类 号：TD263.1[矿业工程—矿井建设]