资源描述：
《深部软岩巷道锚喷注强化承压拱支护机理及其应用》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、第39卷第3期煤炭学报Vol.39No.32014年3月JOURNALOFCHINACOALSOCIETYMar.2014谢生荣,谢国强,何尚森,等.深部软岩巷道锚喷注强化承压拱支护机理及其应用[J].煤炭学报,2014,39(3):404-409.doi:10.13225/j.cnki.jccs.2013.0323XieShengrong,XieGuoqiang,HeShangsen,etal.Anchor-spray-injectionstrengthenedbearingarchsupportingmechanismofdeepsoftrockroadwayandit
2、sapplication[J].JournalofChinaCoalSociety,2014,39(3):404-409.doi:10.13225/j.cnki.jccs.2013.0323深部软岩巷道锚喷注强化承压拱支护机理及其应用1211211谢生荣,谢国强,何尚森,张广超,杨军辉,李二鹏,孙运江(1.中国矿业大学(北京)资源与安全工程学院,北京100083;2.冀中能源股份有限公司邢东矿,河北邢台054000)摘要:针对深部软岩巷道围岩总变形量大、收敛速率快、持续变形时间长以及支护系统损毁等矿压显现特点,分析了复杂应力场和高渗透压作用下的变形破坏机制,并结合深部巷道的
3、“应力恢复、围岩增强、固结修复和主动卸压”控制原则,提出了集密集高强锚杆承压拱、厚层钢筋网喷层拱和滞后注浆加固拱于一体的锚喷注强化承压拱支护技术,并阐明其成拱及强化支护的机理。结合现场地质生产条件采用理论计算、数值模拟和工程类比法综合确定试验巷道围岩支护方案,并进行现场应用。现场实践表明,采用锚喷注强化承压拱支护技术后,巷道围岩总体变形量较小,围岩收敛率从扩刷修复前的2.6mm/d降至0.56mm/d,且支护系统亦无开裂损毁现象发生,实现了对深井软岩巷道的有效控制。关键词:深井软岩巷道;高强锚杆承压拱;变形破坏机制;厚层钢筋网喷层拱中图分类号:TD353文献标志码:A文章编
4、号:0253-9993(2014)03-0404-06Anchor-spray-injectionstrengthenedbearingarchsupportingmechanismofdeepsoftrockroadwayanditsapplication1211XIESheng-rong,XIEGuo-qiang,HEShang-sen,ZHANGGuang-chao,211YANGJun-hui,LIEr-peng,SUNYun-jiang(1.FacultyofResources&SafetyEngineering,ChinaUniversityofMining&T
5、echnology(Beijing),Beijing100083,China;2.XingdongMine,JizhongEner-gyGroupCo.,Ltd.,Xingtai054000,China)Abstract:Accordingtothestratabehaviorfeaturesofdeeproadwaywithsoftsurroundingrocksuchaslargeamountsoftotaldeformation,highconvergencerate,longcontinuoustimeandsupportsystemdamage,afterhavi
6、nganalyzedthedeformationandfailuremechanismaffectedinroleofcomplicatedstressfieldandosmolality,combiningwithcontrolprinciplesofdeeproadwaythatarestressrecovery,thesurroundingrockenhancing,consolidationrepairandactivepressurerelief,thispaperputforwardtheanchor-spray-injectiontostrengthenedb
7、earingarchsupportingtechnologyin-tegratedwithhighstrengthanchorbearingarch,thicksteelmeshspray-uparchandlaggroutingreinforcementarch,andclarifieditsarchingandstrengtheningmechanism.Thesupportprogramoftestroadwaywasfinallydeterminedusingthetheoreticalcalculatio
