孤岛煤柱下伏工作面停采线位置确定及动压巷道支护研究  

Location Determination on Mining Terminal Line of Underlying Coal Pillar MiningFace in Seam Island and Study on Support of Dynamic Pressure Gateway

作　　者：张五一 金瑞举 高磊 王福海[2] ZHANG Wuyi;JIN Ruiju;GAO Lei;WANG Fuhai(Xieqiao Mine,Huainan Mining Group Corporation Limited,Fuyang 236000,China;Anhui Provincial Academy of Coal Science,Hefei 230000,China)

机构地区：[1]淮南矿业(集团)有限责任公司谢桥煤矿,安徽阜阳236000 [2]安徽省煤炭科学研究院,安徽合肥230000

出　　处：《建井技术》2020年第4期42-46,51,共6页Mine Construction Technology

摘　　要：为确保受下伏13416工作面采动影响的1322(3)孤岛煤柱面安全开采,采用相似模拟试验方法,对下伏13416工作面回采时的上覆1322(3)孤岛煤柱工作面垂直应力及垂直位移变化规律做了分析研究,并进行了1322(3)工作面回风巷动压条件下的巷道支护现场工程实践。研究结果表明:下伏13416工作面停采线距1322(3)工作面回风巷90 m时,有利于孤岛煤柱工作面巷道维护及工作面安全开采;动压条件下,1322(3)工作面回风巷采用设计支护方案支护后,巷道围岩变形处于合理范围内,顶板岩层完整性较好,锚杆、锚索均能发挥各自锚固及承载作用,巷道围岩控制较好,能满足正常使用要求。In order to ensure a safety mining of No.1322(3)coal pillar mining face in the seam island affected by the mining operation of the underlying No.13416 coal mining face,a similar simulation test method was applied to an analysis study on the aviation law of the vertical stress and vertical displacement in the overlying No.1322(3)coal pillar mining face in the seam island during the mining operation of the underlying No.13416 coal miming face.Under the dynamic pressure condition of the air return gateway in No.1322(3)coal mining face,an engineering practices on the support site of the gateway was conducted.The study results showed that when the mining terminal line of underlying No.13416 mining face had a distance of 90 m to the air return gateway of No.1322(3)coal mining face,it would be favorable to the gateway maintenance of the coal pillar mining face in the seam island and to the safety mining of the coal mining face.Under the condition of the dynamic pressure,after the application of the designed support plan to the air return gateway of No.1322(3)coal mining face,the surrounding rock deformation of the gateway would be in a rational scope,the integrity of the roof strata was well and the bolts and anchors all could play each bolting and loading function.The surrounding rock control of the gateway was good and could meet the normal application requirements.

关 键 词：煤柱工作面 停采线 动压巷道 相似模拟 巷道支护 

分 类 号：TD353[矿业工程—矿井建设]