四侯矿采区回风巷道锚杆支护参数模拟优化研究  

Simulation and Optimization of Anchor Bolt Support Parameters in the Return Air Tunnel of Sihou Mine

作　　者：赵景川 Zhao Jingchuan(School of Mining,Liaoning Technical University,Fuxin 123000,China;Yangcheng Sihou Coal Industry Co.,Ltd.,Shanxi Coal Transportation and Sales Group,Jincheng 048000,China)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]山西煤炭运销集团阳城四侯煤业有限公司,山西晋城048000

出　　处：《煤炭与化工》2023年第11期40-43,共4页Coal and Chemical Industry

摘　　要：锚杆预应力、长度、密度、角度、锚固方式等参数的合理确定是煤矿井下巷道支护安全的保障,为保证井下巷道安全、高效、经济支护,以四侯矿二采区回风巷为例,在系统测试各项地质参数的基础上,采用数值模拟方法分析各项参数的锚杆支护效果,揭示了锚杆支护时各项参数的最优组合,建立了巷道锚杆支护成套技术体系。研究结果表明:预应力有效扩散是支护设计的关键,提高预应力,可适当减小锚杆长度;过度增加支护密度时锚杆预应力的扩散作用不明显;角锚杆最大角度不应超过10°;全长锚固与加长锚固的效果均比端部锚固差。The reasonable determination of parameters such as anchor pre-stress,length,density,angle,and anchoring method restricts the safety of underground roadway support in coal mines.To ensure the safety,efficiency,and economic support of underground tunnels,the return air roadway in the second mining area of Sihou Mine was taken as an example,based on the systematic testing of various geological parameters,numerical simulation methods were used to analyze the anchor support effect of each parameter,revealing the optimal combination of various parameters during anchor support,A complete technical system for roadway anchor support had been established.The research results indicated that effective diffusion of pre-stress was the key to support design,and increasing pre-stress could appropriately reduce the length of anchor rods;The diffusion effect of anchor prestress was not obvious when the support density was excessively increased;The maximum angle of the angle anchor rod should not exceed 10°;The effect of full length anchoring and extended anchoring was worse than that of end anchoring.

关 键 词：锚杆 支护参数 数值模拟 支护效果 

分 类 号：TD353[矿业工程—矿井建设]