任务精读：初期支护一般知识（双语）课件讲解.pptx

隧道施工技术初期支护一般知识TunnelConstructionTechnologyGeneralKnowledgeofPrimarySupport

初期支护的概念1初期支护的特点2初期支护一般知识目录课程小结4初期支护的施工流程2TableofContentsGeneralKnowledgeofPrimarySupportConceptofPrimarySupportCharacteristicsofPrimarySupportConstructionProcessofPrimarySupportSummary

.动画导入基本措施Basicmeasures钢筋网Reinforcingmesh钢拱架Steelsupport锚杆Anchorrod喷射混凝土Shotcrete初期支护一般知识GeneralKnowledgeofPrimarySupport

初期支护的概念ConceptofPrimarySupport01

依照围岩分级，采用开挖状态不同，坑道开挖后的稳定状态也不同，从而采取控制稳定的技术措施也不同。Accordingtotheclassificationofsurroundingrocks,thegallerysstabilityafterexcavationwillbedifferentaccordingtodifferentexcavationstates.Therefore,thetechnicalmeasurestocontrolstabilitywillalsobedifferent.隧道工程Tunnelengineering坑道支护GallerySupport自支护Self-support人工支护Artificialsupport围岩自身的支护能力Self-supportingcapacityofsurroundingrocks初期支护Primarysupport二次衬砌Secondarylining初期支护Primarysupport喷混凝土Shotcrete锚杆Anchorrod钢筋网Reinforcingmesh钢支撑Steelsupport保证隧道在服务年限中的稳定、耐久，以及作为安全储备的工程措施。Secondaryliningisanengineeringmeasuretoensurethestabilityanddurabilityofthetunnelinitsservicelifeandtoserveasasafetyreserve.二次衬砌Secondarylining初期支护一般知识初期支护的概念GeneralKnowledgeofPrimarySupportConceptofPrimarySupport

初期支护的特点CharacteristicsofPrimarySupport02

由喷射混凝土、锚杆、钢筋网等支护部件进行适当组合。Isproperlycombinedbyshotcrete,anchorrod,reinforcingmeshandothersupportingcomponents.锚喷支护Bolt-shotcreteSupport局部加固Localreinforcement整体加固Overallreinforcement一次完成Completedonce分次完成Completedinseveraltimes充分体现“先柔后刚，按需提供”的原则。Fullyreflectstheprincipleofflexiblefirstandthenrigid,andprovideasrequired.迅速发挥其对围岩的支护。Quicklyplayitsroleinsupportingsurroundingrocksafterconstruction.灵活性Flexibility及时性Timeliness初期支护一般知识初期支护的特点GeneralKnowledgeofPrimarySupportCharacteristicsofPrimarySupport

喷射混凝土能与坑道周边的围岩紧密地粘结。Theshotcretecanbetightlybondedwithsurroundingrocksaroundthegallery.深入围岩体内部一定深度。Penetratein