第43卷第1期2023年2月防灾减灾工程学报JournalofDisasterPreventionandMitigationEngineeringVol.43No.1Feb.2023软岩巷道围岩刚柔耦合支护技术研究与应用∗张红军1,2,王奎峰1,王薇1,张瑞华1,许艳1,张太平1,王强1(1.山东省地质科学研究院,山东济南250013;2.自然资源部金矿成矿过程与资源利用重点实验室,山东济南250013)摘要:煤矿开采进入深部开采阶段后,普遍呈现出围岩变形量大、支护构件失效的技术难题。为研究针对性的控制对策,以矿典型高地应力软弱破碎巷道为研究背景,在现场矿压监测、地质雷达探测以及地应力实测的基础上,研究了此类巷道的变形规律。同时基于现场监测及分析成果,提出了以高预应力锚杆、注浆锚杆(索)和“U”型钢架为核心的分步刚柔耦合支护关键技术,并阐明了其具体支护机制。为进一步检验新支护方案的支护效果,在新掘的胶带大巷进行了现场实验,相比原支护围岩松动破坏范围减小了近50%,顶板下沉量、两帮移近量以及底鼓量仅163、135和107mm,52d内基本实现了巷道变形稳定,取得了良好的支护效果。关键词:耦合支护;高地应力;软岩巷道;注浆加固;变形特征中图分类号:TD421.5+3;X936文献标识码:A文章编号:1672⁃2132(2023)01⁃0107⁃07StudyandApplicationofRigid⁃FlexibleCouplingSupportTechnologyforSurroundingRockinSoftRockRoadwayZHANGHongjun1,2,WANGKuifeng1,WANGWei1,ZHANGRuihua1,XUYan1,ZHANGTaiping1,WANGQiang1(1.ShandongInstituteofGeologicalSciences,Ji'nan250013,China;2.KeyLaboratoryofGoldMineralizationPro⁃cessesandResourcesUtilizationSubordinatedtotheMinistryofLandandResources,Ji'nan250013,China)Abstract:Thetechnicalproblemsassociatedwithlargedeformationsofsurroundingrockandfailureofsupportingmembersusuallyariseduringthestageofdeepminingincoalmines.Tostudythecontrolcountermeasures,oftheseproblems,astudywasconductedonatypicalroadwaywithhighgroundstressandweakcrushinginacoalmine.Onthebasisofon-siteminepressuremonitoring,geologicalradardetectionandin-situstressmeasurement,thedeformationbehaviorandmechanismsofsuchroadwayswerestudied.Basedontheresultsofon-sitemonitoringandanalysis,thekeytechnologiesofstep-by-stepcouplingsupportwithhighlyprestressedbolts,groutingbolts(cables)and"U"steelframesarepropo...