【摘要】：在我國,隨著偏遠(yuǎn)山區(qū)鐵路交通的大力發(fā)展,鐵路隧道在整個山區(qū)交通中的重要性日益凸顯。伴隨著長隧道的日益增加,隧道施工也成為一個炙手可熱的話題。在新奧法沒有出現(xiàn)很長一段時間,隧道工程施工中技術(shù)人員只能憑借工程中累積的經(jīng)驗。由于地質(zhì)條件的復(fù)雜性,隧道環(huán)境在未開挖前是具有不可預(yù)見性的,因此,這種僅靠經(jīng)驗指導(dǎo)施工的方法具有一定的盲目性。新奧法的出現(xiàn)是隧道施工方法的一次飛躍,是隧道施工進(jìn)入了動態(tài)化時代。 信息化施工是通過收集周邊圍巖以及掌子面前方未開挖圍巖的動態(tài)信息,從而動態(tài)的指導(dǎo)隧道施工的一種方法。信息化施工是為了減少隧道風(fēng)險而形成的一套系統(tǒng)、詳細(xì)的監(jiān)測計劃,對隧道施工具有指導(dǎo)意義。 本文以蘭渝鐵路熊洞灣隧道為研究背景,通過進(jìn)行超前地質(zhì)預(yù)報、現(xiàn)場監(jiān)控量測以及數(shù)值模擬分析對隧道信息化施工進(jìn)行了深入的分析,主要包括以下內(nèi)容： 1.本文介紹了超前地質(zhì)預(yù)報的方法和技術(shù)要求,對進(jìn)口段隧道運用TSP進(jìn)行超前地質(zhì)預(yù)報,并對預(yù)報結(jié)果進(jìn)行分析、處理。 2.介紹了監(jiān)控量測的內(nèi)容、監(jiān)控量測的方法以及監(jiān)控量測數(shù)據(jù)的分析技術(shù)。對現(xiàn)場量測的地表沉降、拱頂下沉、周邊收斂數(shù)據(jù)進(jìn)行整理和回歸分析,得出了圍巖拱頂下沉和周邊收斂的變形規(guī)律,判斷圍巖的穩(wěn)定性以及支護(hù)結(jié)構(gòu)的工作狀態(tài)。 3.通過數(shù)值模擬得到圍巖變形規(guī)律,將模擬的結(jié)果與現(xiàn)場實測數(shù)據(jù)進(jìn)行對比,分析測點布置的準(zhǔn)確性。根據(jù)數(shù)值模擬的錨桿應(yīng)力及襯砌結(jié)構(gòu)應(yīng)力來指導(dǎo)后續(xù)開挖支護(hù)結(jié)構(gòu)的設(shè)計參數(shù)及時修改不合理的支護(hù)結(jié)構(gòu)。
[Abstract]:In China, with the development of railway traffic in remote mountainous areas, the importance of railway tunnel in the whole mountain area traffic is becoming increasingly prominent. With the increasing number of long tunnels, tunnel construction has become a hot topic. Not for a long time, technicians in tunnel construction can only rely on the accumulated experience in the project. Due to the complexity of geological conditions, the tunnel environment is unpredictable before excavation, so the method of guiding construction only by experience has certain blindness. The appearance of the new Olympic method is a leap in the tunnel construction method, and the tunnel construction has entered a dynamic era. Information construction is a method to dynamically guide tunnel construction by collecting dynamic information of surrounding rock and unexcavated surrounding rock in front of face. The information construction is a set of system formed to reduce the tunnel risk. The detailed monitoring plan has the guiding significance to the tunnel construction. Taking Xiong Dong Bay Tunnel of Lanyu Railway as the research background, this paper makes a thorough analysis of the tunnel information construction through advanced geological prediction, on-site monitoring and measurement, and numerical simulation analysis, mainly including the following contents: 1. This paper introduces the methods and technical requirements of advanced geological prediction, uses TSP to carry out the advanced geological prediction for the entrance tunnel, and analyzes and deals with the forecast results. This paper introduces the content of monitoring measurement, the method of monitoring measurement and the analysis technology of monitoring measurement data. Based on the data of ground subsidence, dome subsidence and peripheral convergence measured in the field, the deformation law of surrounding rock vault subsidence and peripheral convergence is obtained, and the stability of surrounding rock and the working state of supporting structure are judged. 3. The deformation law of surrounding rock is obtained by numerical simulation, and the accuracy of measuring point arrangement is analyzed by comparing the simulation results with the field measured data. According to the stress of anchor rod and lining structure of numerical simulation, the design parameters of subsequent excavation support structure can be modified in time.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U456.3;U455

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