动压巷道锚注加固的数值模拟  

Numerical Simulation of Bolt-grouting Reinforcement in Dynamic Pressure Roadway

作　　者：徐铖辉[1] 孟祥瑞[1] 赵光明[1] 房晓敏[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤炭技术》2010年第3期105-107,共3页Coal Technology

基　　金：国家自然科学基金项目(50674002;50804003);教育部高等学校博士学科点专项科研基金(200803610001);教育部"新世纪优秀人才支持计划"项目(NCET-08-0819);安徽省优秀青年科技基金项目(08040106831);安徽省高校省级自然科学研究项目(KJ2008A125);淮南市科技计划项目(2009A05014)

摘　　要：锚注加固通过注浆将破碎围岩凝结成整体,改善围岩的结构及其力学机制,提高了围岩的强度。将锚杆和注浆加固相结合,形成锚注一体化,本质上实现了围岩作为支护结构的一部分,大大提高了支护结构的承载能力。文章对动压破碎巷道锚注加固前后围岩变形情况进行了数值模拟,根据计算分析进行了现场支护试验。监测结果表明:锚注加固显著提高了围岩的强度和承载能力,有效地控制了动压巷道的损伤变形。By grouting bolts, the bolt - grouting reinforcement technology integrates the cracked and loose sur- rounding rocks, then improves the structure of rocks and their physical and mechanical properties, so the in- tensity of the surrounding rocks is enhanced. Combinating of bolt and grouting reinibrcement, the technology enables the integrity of the bolting and grouting, really makes the surrounding rocks themselves be part. of the supporting system, therefore, the bearing ability of the support structure is greatly increased. In the paper, the numericla simulation of the deformation of the surrounding rocks is carried out by reinforcing the dynamic and broken roadway. According to the calculation and analysis, the on - site support test is made. The result indi- cates that the strength and beating capacity of surrounding rocks for bolt - grouting roadway are greatly in- creased, which is helpful for controlling the damage deformation of dynamic pressure roadway.

关 键 词：动压巷道 锚注加固 FLAC数值模拟 

分 类 号：TD353[矿业工程—矿井建设]