仲恒煤矿弱胶结极破碎围岩巷道控制技术研究  

Roadway Control Technology with Weakly Consolidated and Broken Surrounding Rock of Zhongheng Coal Mine

作　　者：徐佑林[1] 王飞 郑伟[1] 

机构地区：[1]贵州理工学院矿业工程学院,贵州贵阳550003 [2]四川山源矿业工程技术有限公司,四川成都610042

出　　处：《煤矿开采》2017年第1期65-68,共4页Coal Mining Technology

基　　金：国家自然科学基金青年基金项目(51304119);贵州省教育厅青年科技人才成长项目:巷道底板深孔锚固钻进机理及快速钻机研究(黔教合KY字[2016]230);贵州省自然科学基金:贵州煤矿高应力软岩巷道底板失稳破坏及控制机理研究(黔科合基础[2016]1068)

摘　　要：针对仲恒煤矿115-102运输巷弱胶结极破碎围岩条件,使用小孔径钻孔窥视仪对巷道新掘段和变形量较大段进行窥视,对比分析巷道变形原因。使用FLAC^(3D)数值计算软件模拟分析了不同参数下锚杆预应力场分布情况。基于模拟分析结果,针对围岩特点确定了高预紧力、高强度、高刚度的锚杆索联合支护方案。该方案实施于井下并进行矿压监测,监测结果表明该方案可以有效控制围岩变形。To weakly consolidated and broken surrounding rock of 115-102 haulage roadway of Zhongheng coal mine, then small hole diameter peeping device was used in new tunneling roadway and section with large deformnation, the reasons of roadw,ay deformation ＂was compared. The pre-stress distribution field of cable under different parameters were analyzed with numerical simulation software FLAC^3D . Based on the results of numerical simulation, combined supporting with rock bolt and cable schemes was determined for surrounding rock characters, which has the characters of high pretightening force, high strength, and high stiffness, then schemes was applied in underground and mine pressure was supervised, the results proved that the schemes could control surrounding rock deformation effectively.

关 键 词：弱胶结 破碎围岩 钻孔窥视 锚杆索联合支护 

分 类 号：TD353[矿业工程—矿井建设]