深部高应力软岩巷道综合支护技术研究(1).pdf

分类号分类号TD353TD353密密级级公公开开 U D CU D C 单位代码单位代码1042410424 学学 位位 论论 文文 深部高应力软岩巷道综合支护技术研究深部高应力软岩巷道综合支护技术研究深部高应力软岩巷道综合支护技术研究深部高应力软岩巷道综合支护技术研究 丰丰凯凯 申请学位级别申请学位级别硕士学位硕士学位专业专业名名称称建筑与土木工程建筑与土木工程 指导教师姓名指导教师姓名王以功王以功职职称称教教授授 山山 东东 科科 技技 大大 学学 二零一二年五月二零一二年五月 论文题目论文题目论文题目论文题目 深部高应力软岩巷道综合支护技术研究深部高应力软岩巷道综合支护技术研究深部高应力软岩巷道综合支护技术研究深部高应力软岩巷道综合支护技术研究 作者姓名作者姓名作者姓名作者姓名丰丰凯凯入学时间入学时间入学时间入学时间2010201020102010 年年 9 9 9 9 月月 专业名称专业名称专业名称专业名称建筑与土木工程建筑与土木工程研究方向研究方向研究方向研究方向城市与矿山地下工程城市与矿山地下工程 指导教师指导教师指导教师指导教师王以功王以功职职职职称称称称教教授授 副指导教师副指导教师副指导教师副指导教师李福献李福献职职职职称称称称高级工程师高级工程师 论文提交日期论文提交日期论文提交日期论文提交日期2012201220122012 年年 5 5 5 5 月月 论文答辩日期论文答辩日期论文答辩日期论文答辩日期2012201220122012 年年 6 6 6 6 月月 6 6 6 6 日日 授予学位日期授予学位日期授予学位日期授予学位日期 RESEARCHRESEARCHRESEARCHRESEARCH ONONONON COMPREHENSIVECOMPREHENSIVECOMPREHENSIVECOMPREHENSIVE SUPPORTSUPPORTSUPPORTSUPPORT TECHNOLOGYTECHNOLOGYTECHNOLOGYTECHNOLOGYININININ HIGH-STRESSHIGH-STRESSHIGH-STRESSHIGH-STRESS DEEPDEEPDEEPDEEPSOFTSOFTSOFTSOFT ROCKROCKROCKROCK ROADWAYROADWAYROADWAYROADWAY A A A ADissertationDissertationDissertationDissertation tedtedtedted inininin fulfillmentfulfillmentfulfillmentfulfillment ofofofof thethethethe requirementsrequirementsrequirementsrequirements ofofofof thethethethe degreedegreedegreedegree ofofofof MASTERMASTERMASTERMASTER OFOFOFOFENGINEERINGENGINEERINGENGINEERINGENGINEERING fromfromfromfrom ShandongShandongShandongShandong UniversityUniversityUniversityUniversity ofofofof ScienceScienceScienceScience andandandandTechnologyTechnologyTechnologyTechnology b b b by y y y FengFengFengFeng KaiKaiKaiKai SupervisorSupervisorSupervisorSupervisor ProfessorProfessorProfessorProfessorWangWangWangWangYigongYigongYigongYigong CollegeCollegeCollegeCollege ofofofof CivilCivilCivilCivil EngineeringEngineeringEngineeringEngineering andandandandArchitectureArchitectureArchitectureArchitecture MayMayMayMay 2012201220122012 声声明明 本人呈交给山东科技大学的这篇硕士学位论文，除了所列参考文献和世所本人呈交给山东科技大学的这篇硕士学位论文，除了所列参考文献和世所 公认的文献外，全部是本人在导师指导下的研究成果。该论文资料尚没有呈交公认的文献外，全部是本人在导师指导下的研究成果。该论文资料尚没有呈交 于其它任何学术机关作鉴定。于其它任何学术机关作鉴定。 硕士生签名硕士生签名 日日期期 AFFIRMATIONAFFIRMATIONAFFIRMATIONAFFIRMATION I I I I declaredeclaredeclaredeclare thatthatthatthat thisthisthisthis dissertation,dissertation,dissertation,dissertation, tedtedtedted inininin fulfillmentfulfillmentfulfillmentfulfillment ofofofof thethethethe requirementsrequirementsrequirementsrequirements forforforfor thethethethe awardawardawardaward ofofofof MasterMasterMasterMaster ofofofof EngineeringEngineeringEngineeringEngineering inininin ShandongShandongShandongShandong UniversityUniversityUniversityUniversity ofofofof ScienceScienceScienceScience andandandand Technology,Technology,Technology,Technology, is is is is whollywhollywhollywholly mymymymy ownownownown workworkworkwork unlessunlessunlessunless referencedreferencedreferencedreferenced ofofofof acknowledge.acknowledge.acknowledge.acknowledge. 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SignatureSignatureSignatureSignature DateDateDateDate 山东科技大学硕士学位论文摘要 摘摘 要要 深部高应力软岩巷道支护问题已成为煤矿开采中一个常见的复杂问题。特别是随着 开采强度及深度的日益加大，越来越多的深井巷道应运而生，随即出现大量的支护困难 巷道，包括深部巷道，高地应力巷道，受强烈动压影响巷道，围岩松软破碎、极破碎巷 道等。对深部资源矿产的开采过程中的支护问题提出了严峻挑战。要确保这类巷道的安 全支护问题，选择科学合理的支护方式及参数便是重中之重。因此研究深部高应力软岩 巷道的合理支护技术具有非常重要的现实意义。 我国多数煤矿已进入深部开采阶段，随着进入深井开采后，岩层压力变大，巷道围 岩变形量显著增大、变形加快，支架受损严重，矿压显现剧烈，巷道翻修率剧增，致使 深部软岩巷道的开掘及支护变得十分困难。由于巷道围岩性质的复杂性及围岩所处应力 环境和地质环境的复杂性，现有的理论还无法解决在软岩巷道变形机理认识上的问题， 现有的支护技术也很难从根本上保持软岩巷道围岩的稳定性。因此，继续对深部高应力 软岩巷道的支护机理进行研究具有非常重要的意义。 本论文通过对深部高应力软岩巷道变形破坏特征及多种变形破坏形态的理论分析， 采用与 FLAC-3D 模拟及现场试验相结合的方法，研究确认采用“一次锚网喷支护，二 次锚索锚注加固”联合加固支护技术，充分发挥支护承载能力和围岩自承能力，对深 部高应力软岩巷道破坏机理和锚注加固机理作了深入研究。 关键词关键词深部高应力；软岩；巷道支护；锚注支护 山东科技大学硕士学位论文Abstract AbstractAbstractAbstractAbstract The support of the soft rock roadways under high stress has become a common complex problem. Especially with the strength and depth of the mining increasingly increase, more and more roadway of deep mine arise at the historic moment.Then a lot of difficulties in spporting of roadway appeared, including deep roadway, high geostress roadway, the strong influence of dynamic pressure roadway, soft surrounding rock broken roadway, etc. These problems put forward severe challenges to the support of the process of mining of mineral resources .Toensure the safety of this kind of roadway support, scientific choice of the supporting and parameters of the reasonable is most important. So the study of the support technology in deep soft failure roadway under high stress has very important practical significance. The majority of coal mines in China has entered the stage of deep mining, along with entering the deep mining, the rock pressure is larger, a significant increase inthe surrounding rock deation, deation speed up bracket badly damaged,the Strata behavior severe, roadway renovation of a sharp increase, resulting indeep soft rock tunnel dug and support very difficult. As the complexity of thecomplexity of the nature of surrounding rock and surrounding rock in which the stressenvironment and geological environment, the existing theory can not be solved in thesoft rock roadway deation mechanism of understanding on the existing supportis also difficult to fundamental to maintain the stability of the soft rock tunnel.Therefore, to continue on the mechanism of deep high stress soft rock roadwaystudy has very important significance. In this paper, the high stress in deep soft rock tunnel deation damage characteristics and many kinds of deation and failure of the of theoretical analysis. FLAC 3D is used in the simulation of the of combining study to make sure the “first time spray the anchornetsupporting,secondarycableandanchorinjectionreinforcement“joint reinforcement technology, giving full play to the supporting bearing capacity and the surrounding rock pile capacity, which makes a further stud to the high stress of deep soft rock tunnel failure mechanism and anchor note reinforcement mechanism. 山东科技大学硕士学位论文Abstract KeyKeyKeyKey wordswordswordswords Deep high stress; Soft rock; Roadway support; blot-grouting reinforcement 山东科技大学硕士学位论文目录 目目 录录 1 1 1 1 绪论绪论绪论绪论............................................................................................................................................................................................................................................................................................................................................................................................................................................................1 1 1 1 1.1 课题研究的意义........................................................................................................... 1 1.2 国内外深部高应力软岩巷道支护理论研究概况....................................................... 2 1.3 研究内容....................................................................................................................... 4 1.4 研究方法....................................................................................................................... 4 2 2 2 2 深部高应力软岩巷道变形破坏机制研究深部高应力软岩巷道变形破坏机制研究深部高应力软岩巷道变形破坏机制研究深部高应力软岩巷道变形破坏机制研究............................................................................................................................................................................................................................6 6 6 6 2.1 软岩的相关概念........................................................................................................... 6 2.2 深部高应力软岩巷道变形破坏特征........................................................................... 8 2.3 深部高应力软岩巷道变形破坏形态分析................................................................... 9 2.4 深部高应力软岩巷道围岩变形破坏影响因素......................................................... 12 2.5 本章小结..................................................................................................................... 14 3 3 3 3地应力分布规律及实测研究地应力分布规律及实测研究地应力分布规律及实测研究地应力分布规律及实测研究............................................................................................................................................................................................................................................................................................1 51 51 51 5 3.1 地应力测试方法概述................................................................................................. 15 3.2 唐口矿地应力测试概况............................................................................................. 18 3.3 本章小结..................................................................................................................... 23 4 4 4 4 深部高应力软岩巷道联合支护技术研究深部高应力软岩巷道联合支护技术研究深部高应力软岩巷道联合支护技术研究深部高应力软岩巷道联合支护技术研究....................................................................................................................................................................................................................2 42 42 42 4 4.1 深部高应力软岩巷道支护分析................................................................................. 24 4.2 深部高应力软岩巷道支护对策................................................................................. 25 4.3 深部高应力软岩巷道综合支护技术......................................................................... 26 4.4 “一次锚网喷支护，二次锚索锚注加固”联合支护技术...................................31 4.5 本章小结..................................................................................................................... 33 5 5 5 5 唐口泵房唐口泵房唐口泵房唐口泵房““““锚索锚索锚索锚索 锚注锚注锚注锚注””””联合支护数值模拟研究联合支护数值模拟研究联合支护数值模拟研究联合支护数值模拟研究............................................................................................................................................................3 43 43 43 4 5.1FLAC-3D 应用程序简介..........................................................................................34 5.2 模拟参数的确定......................................................................................................... 35 5.3 数值模拟结果与分析................................................................................................. 37 6 6 6 6 矿压测试技术研究与分析矿压测试技术研究与分析矿压测试技术研究与分析矿压测试技术研究与分析....................................................................................................................................................................................................................................................................................................................4 14 14 14 1 6.1 矿压监测目的及意义................................................................................................. 41 6.2 巷道矿压监测原则及内容......................................................................................... 41 6.3 2304 第一联络巷道测站布置..................................................................................... 42 6.4 监测仪器原理及数据分析......................................................................................... 43 6.5 本章小结..................................................................................................................... 49 7 7 7 7 结论结论结论结论....................................................................................................................................................................................................................................................................................................................................................................................................................................................................5 05 05 05 0 山东科技大学硕士学位论文目录 7.1 主要结论..................................................................................................................... 50 7.2 主要建议..................................................................................................................... 50 致致致致 谢谢谢谢................................................................................................................................................................................................................................................................................................................................................................................................................................................................................5 15 15 15 1 攻读硕士期间主要成果攻读硕士期间主要成果攻读硕士期间主要成果攻读硕士期间主要成果....................................................................................................................................................................................................................................................................................................................................................5 15 15 15 1 参考文献参考文献参考文献参考文献....................................................................................................................................................................................................................................................................................................................................................................................................................................................5 35 35 35 3 山东科技大学硕士学位论文Contents ContentsContentsContentsContents 1 1 1 1 IntroductionIntroductionIntroductionIntroduction1 1 1 1 1.1 The research meaning of the topic1 1.2 Current research status of roadway in deep high stress soft rock at home and abroad2 1.3 Contents of the research4 1.4 of the research 4 2 2 2 2 ResearchResearchResearchResearch onononon failurefailurefailurefailure mechanismmechanismmechanismmechanism ofofofof high-stresshigh-stresshigh-stresshigh-stress deepdeepdeepdeep softsoftsoftsoft rockrockrockrock roadwayroadwayroadwayroadway6 6 6 6 2.1 The definition of the soft rock6 2.2 Failure characteristics of high-stress deep soft rock roadway8 2.3 Failure Speciation analysis of high-stress deep soft rock roadway 9 2.4 The influencing Factors of high-stress deep soft rock roadway12 2.5 Chapter summary14 3 3 3 3 GroundGroundGroundGround StressStressStressStress DistributionDistributionDistributionDistribution LawLawLawLaw andandandand PracticalPracticalPracticalPractical MeasureMeasureMeasureMeasure ResearchResearchResearchResearch15151515 3.1 Ground stres measurement s survey15 3.2 General Situation of in-situ stress measurement of Tangkou Mine18 3.3 Chapter summary23 4 4 4 4 ResearchResearchResearchResearch onononon combinedcombinedcombinedcombined supportsup