深井高应力巷道锚杆支护参数优化研究  

Optimization of Anchored Bolt Supporting Parameter for Roadway with High Stress in Deep Mine

作　　者：张斌川[1] 卢辉[1] 刘路[1] 卢志江 保天才 李炜强 王福利[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：《煤矿开采》2014年第6期116-119,共4页Coal Mining Technology

基　　金：国家自然科学基金面上项目:深部硬岩岩爆发生机理及协同预警关键点识别研究(51374217)

摘　　要：针对潘西矿7192回风巷在原锚杆支护效果不理想的情况,通过数值模拟软件FLAC3.3,对不同支护方式和支护参数条件下的锚杆支护情况进行模拟,并对模拟结果进行了分析。结果表明:相比原有的锚杆支护,强力锚杆支护系统能更有效地控制巷道围岩变形。通过对不同锚杆预紧力、锚杆排距、锚杆直径、锚杆长度的模拟支护效果分析,得到了优化参数预紧力为15t、排距为800mm、直径为25mm、长度为2.4m的螺纹钢筋锚杆支护方案。同时,将优化的支护方案进行现场试验,试验结果表明强力支护锚杆系统能更有效地控制巷道变形,明显改善巷道围岩支护效果。In order to improve supporting effect of 7192 air-roadway in Panxi Colliery, different anchored bolt supporting manners and parameters were numerically simulated with FLAC3. 3. Results showed that powerful anchored-bolt supporting system could effectively control deformation of surrounding rock, compared with primary anchored-bolt supporting. Optimized parameters including 15t pre-ten-sion force, 800mm row spacing, 25mm diameter and 2. 4m length were obtained by analyzing supporting effect of different pre-tension forces, row spacings, diameters and lengths of anchored-bolt. On-the-spot test of optimized supporting projection showed that powerful anchored-bolt supporting system distinctly improved supporting effect.

关 键 词：高应力巷道 锚杆支护 数值模拟 参数优化 

分 类 号：TD353[矿业工程—矿井建设]