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1、重慶大學(xué)碩士學(xué)位論文淺埋偏壓軟弱圍巖連拱隧道穩(wěn)定性研究姓名：周朝長(zhǎng)申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：巖土工程指導(dǎo)教師：劉新榮20060501中文摘要摘要近年來(lái)隨著高等級(jí)公路建設(shè)的不斷發(fā)展隧道的數(shù)量日益增多連拱隧道具有線形流暢空間利用率高占地面積較少與洞外線路連接方便等優(yōu)點(diǎn)得到了越來(lái)越多的應(yīng)用隨著隧道支護(hù)設(shè)計(jì)理論不斷發(fā)展新奧法成為現(xiàn)代支護(hù)理論的典型代表尤其是現(xiàn)場(chǎng)監(jiān)控量測(cè)的應(yīng)用并與理論分析結(jié)合發(fā)展為一種適應(yīng)地下工程特點(diǎn)和當(dāng)前技術(shù)水平的新的設(shè)計(jì)方法信息化設(shè)計(jì)方法現(xiàn)場(chǎng)監(jiān)控量測(cè)動(dòng)態(tài)設(shè)計(jì)信息化施工已經(jīng)成為當(dāng)前隧道及其地下工程設(shè)計(jì)和建設(shè)的發(fā)展方向本文以昱嶺關(guān)連拱隧道為研究背景結(jié)合施工現(xiàn)場(chǎng)的監(jiān)控量測(cè)和數(shù)
2、值模擬試圖對(duì)現(xiàn)場(chǎng)監(jiān)控量測(cè)動(dòng)態(tài)設(shè)計(jì)信息化施工在軟弱圍巖連拱隧道中的有效應(yīng)用進(jìn)行分析綜合分析了隧道地質(zhì)條件隧道圍巖在施工過(guò)程的應(yīng)力和應(yīng)變的變化情況及隧道的穩(wěn)定性等對(duì)偏壓軟弱圍巖連拱隧道的施工力學(xué)效應(yīng)進(jìn)行了監(jiān)控量測(cè)和數(shù)值模擬分析總結(jié)了昱嶺關(guān)隧道新奧法監(jiān)控量測(cè)的基本原則和特點(diǎn)系統(tǒng)分析了隧道初期支護(hù)和二次襯砌結(jié)構(gòu)應(yīng)力變化規(guī)律假設(shè)多種不同施工順序?qū)λ淼缼r石應(yīng)力初期支護(hù)應(yīng)力二次襯砌應(yīng)力以及位移條件進(jìn)行分析比較選擇更好的施工順序優(yōu)化設(shè)計(jì)對(duì)隧道在施工中出現(xiàn)的險(xiǎn)情進(jìn)行分析闡述了監(jiān)控量測(cè)在險(xiǎn)情出現(xiàn)以及處理中的作用并且利用三維數(shù)值模擬分析了隧道出現(xiàn)險(xiǎn)情的原因以及處理險(xiǎn)情后的應(yīng)力狀況關(guān)鍵詞偏壓軟弱圍巖連
3、拱隧道監(jiān)控量測(cè)數(shù)值模擬施工順序險(xiǎn)情分析I重慶大學(xué)碩士學(xué)位論文ABSTRACTInrecentyears,withtheincessantdevelopmentofthruway,thequantitiesoftunnelincreasefast.Themulti-archtunnelhavebeenadoptedmoreandmorebecauseofit’sadvantage,suchasfluentappearance,wellusingofspace,lessconstructarea,convenienttoconnectingtotheway,andsoon.With
4、theincessantdevelopmentofdesigntheoryoftunneltimbering,NewAustrianTunnelingMethodbecometherepresentativeofpresent-daytimberingdesigntheory,especiallytheapplicationoffieldmonitoringmeasurementcombinedwiththeoryanalysis,whichgivebirthtoanewdesignmethodinformationdesignmethod.Thisisamethodfitfo
5、rundergroundconstructionandmoderntechnology.Fieldmonitoring,dynamicdesign,informationconstructionhavebeenbecamethedevelopingdirectionoftunnelandundergroundconstruction.BasedonthefieldmonitoringmeasurementandnumericalsimulationforYuLingguantwin-archTunnel,theauthortrytoanalyzetheapplicationof
6、fieldmonitoringmeasurement,dynamicdesign,informationconstructionontheweakwall-rocksectortunneling.Thisarticlehasanalyzedstress;strainandstabilityoftunnelwall-rocksectorandgeologicalconditionduringtheexcavation.Theauthorhasanalyzedtheconstructionmechanicsofleanstressweakwall-rocksectormulti-a
7、rchtunnel,whichisbasedonthefieldmonitoringmeasurementandnumericalsimulation.Inaddition,theauthorsummarizedthebasicprincipleandbasiccharacterofthefieldmonitoringmeasurementforYuLingguantunnel,andanalyzedthestressvarietycharacteroffirsttimberingandse
