摘要随着我国主要铁路干线列车运行速度不断提高，高速铁路建设即将全面展开，高铁隧道的建设是其重要课题。沪昆客运铁专线作为国家《中长期铁路网规划》的干线铁路，成为上海省到云南省之间理程最长、标准最高、覆盖区县最多、投资规模最大的铁路项目。本设计依托沪昆客运铁路专线新庄隧道工程，首先对隧道的工程地质概况进行详细地分析，据此对隧道进行总体设计，并依据相关规范和有关文献资料对隧道进行初步拟定。隧道设计的主要内容首先为洞门的设计，洞门的设计包括洞门选型及受力验算；其次为初期支护设计，初期支护首先确定支护形式再分不同级别围岩分别进行抗力计算；再利用理正软件对隧道的二衬进行内力计算和验算以及配筋计算；最后为施工组织设计，包括隧道不同级别围岩的开挖方式和爆破方式的设计，以及超前支护、初期支护和二衬的施工组织设计；设计还对隧道的防排水以及通风和监控量测进行设计，以保证施工的安全级结构的长期稳定性。关键词：高铁隧道；洞门；初期支护；防排水ABSTRACTWiththespeedofthemainrailwaylinesincreasinginourcountry,thehigh-speedrailwayconstructionisinfullswing.Theconstructionofthehigh-speedrailtunnelistheimportantsubject.Yunguihigh-speedironas"mediumandlong-termrailwaynetworkplanning"mainrailwaylineshasbecomethelongestmileage,thehigheststandards,districtsandcounties,coveringupthelargestinvestmentinrailwayprojects.ThedesignreliesonYunnanLiulangtunnelengineering.Firstly,thedesignanalysedbasedontheengineeringgeologyofthetunnelindetail.Accordingtotheoveralldesignofthetunnel,therelatedstandardsandtherelevantliterature,thetunnelwassettentatively.Thefirstofthemaindesigncontentsofthetunnelisportal’sdesign.Portaldesignincludescheckingandstressofportalselection;followedbytheinitialsupportdesign,initialsupportfirstdeterminethesupportformintodifferentsurroundingrockgradewerecalculatedresistance;reuseofsoftwareofthetunnellininginternalforcecalculationandtwocheckingandreinforcementcalculation;finallydesignforconstructionorganizationdesign,includingdifferentlevelsofsurroundingrocktunnelexcavationandblastingmethods,aswellasforepoling,initialsupportandtwoliningconstructionorganizationdesign;designofdrainagetunnelandventilationandmonitoringdesign,toensurethelong-termstabilityofthesafetylevelofconstruction.Keywords:high-speedrailwaytunnel;portal;initialsupport;drainage目录前言.............................................................................................................................-1-第一章隧道工程概况.................................................................................................-2-1.1工程简介..................................................................................................................-2-1.2工程地质及工程条件评价......................................................................................-2-1.2.1地层岩性........................................................................................................-2-1.2.2地质构造........................................................................................................-3-1.2.3水文地质特征................................................................................................-3-1.2.4隧道涌水量....................................................................................................-3-1.2.5隧道围岩分级................................................................................................-3-1.3不良地质及特殊岩土问题......................................................................
