中厚煤层“两软一硬”回采巷道支护优化  

Support Optimization for “Two Soft Seams and One Hard Seam” Mining Roadway in Medium Thick Coal Seam

作　　者：邹德均[1] 杨红运[2] 宫良伟[1] 胡云江[3] ZOU Dejun;YANG Hongyun;GONG Liangwei;HU Yunjiang(Chongqing Vocational Institute of Engineering,Chongqing 402260,China;State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;Chongqing Songzao Cool ＆ Electricity Group Company,Chongqing 401420,China)

机构地区：[1]重庆工程职业技术学院,重庆402260 [2]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [3]重庆松藻煤电有限责任公司,重庆401420

出　　处：《煤矿安全》2018年第8期177-179,183,共4页Safety in Coal Mines

基　　金：重庆市煤矿安全生产科技资助项目(渝(煤)[2017]-kj-03);第五批重庆市高校优秀人才支持计划资助项目

摘　　要：针对渝阳煤矿N2810工作面回采巷道工字钢架棚支护方式效果差的问题,根据其"两软一硬"(底板及煤层松软)的特定地质条件对支护方案进行优化设计,最终确定支护方案为锚网带索梁耦合支护。矿压监测结果表明:试验段内顶底板相对移近量较架棚段减少了358 mm;两帮相对移近量较架棚段减少了118 mm;试验段内浅基点的最大离层量较架棚段减少了26 mm,深基点的最大离层量较架棚段减少了14 mm。试验效果充分说明了锚网带索梁耦合支护方案应用于中厚煤层"两软一硬"特定地质条件的可行性和优越性。For the problem of the poor effect of steel frame support mode of N2810 working face in Yuyang Coal Mine, the optimal design of the support scheme is carried out according to the specific geological conditions of＂two soft seams and one hard seam＂（soft bottom and coal seam）, the support scheme is determined as anchor net with cable-beam coupling support. The results show that the relative displacement of the roof and floor plate in the test section is reduced by 358 mm, which is lower than that in the shed section. The relative displacement of the two sides is reduced by 118 mm compared with the shed. The maximum separation amount of the shallow foundation in the test section is reduced by 26 mm, which is larger than that in the shed segment. The maximum separation layer amount of deep base point is reduced by 14 mm compared with the shed. The experimental results show the feasibility and superiority of anchor net with cable-beam coupling support scheme in specific geological condition of＂two soft seams and one hard seam＂.

关 键 词：巷道支护 两软一硬 耦合支护 优化设计 松软煤层 

分 类 号：TD353[矿业工程—矿井建设]