摘要随着科技的不断进步，现代隧道无论是从结构计算，还是从施工方法都较以前有了较大的飞跃。本设计课题为公路隧道，注重的是结构计算，重点研究新奥法施工。公路隧道近些年在高等级公路中应用广泛。因为其在山岭地区可用做克服地形或高程障碍，改善线形，提高车速，缩短里程，节约燃料，节省时间，减少对植被的破坏，保护生态环境；还可用做克服落石、坍方、雪崩、雪堆等危害。在城市可减少用地，构成立体交叉，解决交叉路口的拥挤阻塞，疏导交通，保护环境，提高社会综合效益。在江河、海峡、港湾地区，可不影响水路通航。新奥法施工隧道的主要特点是：通过多种量测手段，对开挖后隧道围岩进行动态监测，并以此知道隧道支护结构的设计与施工。其核心目的是为了“保护围岩，调动和发挥围岩的自承能力”。关键词隧道；新奥法；围岩压力AbstractAlongwithprogressunremittinglyofscienceandtechnology,themoderntunnelcomputesfromthestructureregardless,orallcomparetoisbeforefromtheconstructionmethodsbiggerleap.Thisdesigntopicforthehighwaytunnel,whattopayattentiontoisastructurecalculation,thepointresearchtheNewAustrianTunnelingMethodstartconstruction.Thehighwaytunneltheneareryearisinhighgradehighwaytheapplicationisextensively.Becauseitcanusetodotoovercomethegeographyorhighdistanceobstaclesinthemountainrangeregion,theimprovementlineform,raisethecarsoon,shortenthemileage,economizethefuel,savetime,reducetothebreakageofplantthequilt,theprotectionecosystemenvironment;Canalsousetodotoovercometherockslide,landslide,avalanche,snowanetc.endanger.Canreduceinthecitywiththeground,thecomposingflyover,solvethecrossroadoscularandcrowdedjam,appeasethetransportation,environmentalprotection,raisethesocialcomprehensiveperformance.Atriver'sriver,straits,thebayregion,don'taffectthewaterroadnavigation.TheNewAustrianTunnelingMethodstartconstructionthemaincharacteristicsofthetunnelis:Passvariousmeasurementmeanses,afterfoliodigthetunnelroundstherocktocarryonthedynamicstatemonitor,andwiththisdesignandtheconstructionthatknowsthatthetunnelpaystoprotectthestructure.Itscorepurposeisforthesakeof"theprotectionroundstherock,transferanddeveloptoroundtherockoffromaccepttheability".KeyWordstunnel;NewAustrianTunnelingMethod;Roundtherockpressure目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc107507378"摘要PAGEREF_Toc107507378\hIHYPERLINK\l"_Toc107507379"AbstractPAGEREF_Toc107507379\hIIHYPERLINK\l"_Toc107507382"第1章绪论PAGEREF_Toc107507382\h1HYPERLINK\l"_Toc107507383"1.1概述PAGEREF_Toc10