超高巷道巷帮变形特征及支护技术  

Roadside Deformation Features and Support Technology of Ultra-high Roadway

作　　者：许磊[1] 何富连[1] 蒋红军[1] 徐祝贺[1] 邢俊泷[1] 张广超[1] 何尚森[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2013年第6期84-87,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51234005);国家重点基础研究发展计划资助项目(2010CB226802);中央高校基本科研业务费专项资金资助项目(2010YZ02);煤炭资源与安全开采国家重点实验室自主研究课资助项目(SKLCRSM10B08)

摘　　要：通过以山西某矿回采巷道掘进过程中出现的巷道超高段为工程背景,采用数值分析的手段演算了巷道高3～9 m时两帮位移特征:巷高越高巷帮中点水平位移和下沉越明显,大于某临界高度后位移会明显增加且巷帮有产生整体滑移的趋势。揭示了巷帮是超高巷道围岩控制的关键部位,采用锚杆索加固浅部围岩形成的锚固结构对围岩具有约束作用,并采用了相应的"三高"锚杆支护技术。In the engineering background of the ultra - high roadway appeared in the process of mining roadway driving in a mine of Shanxi, it used the method of numerical analysis to calculate the displacement characteristics of two sides with the roadway height of 3 N 9m. The horizontal displacement and sinking of roadside midpoint became more obvious with the height of roadway increasing, when it was greater than a certain critical height, the displacement would significantly increase and there was a trend of overall slip. It re- vealed that the roadsides were the key parts of surrounding rock control in ultra - high roadway, anchor structure formed by using bolt to reinforce shallow surrounding rock had a binding effect on the surrounding rock, and it used the corresponding support technology of ＂ three high＂ bolt.

关 键 词：超高巷道 巷帮 变形特征 支护技术 “三高”锚杆 

分 类 号：TD322[矿业工程—矿井建设]