本文選題：公路隧道 + 監(jiān)控量測(cè)　； 參考：《西南交通大學(xué)》2017年碩士論文

【摘要】：隨著新奧法施工技術(shù)的廣泛應(yīng)用,圍巖的變形越來(lái)越受到人們的關(guān)注。目前,在隧道施工過(guò)程中,主要是采用監(jiān)控量測(cè)的方法獲取圍巖的變形。通過(guò)所測(cè)的數(shù)據(jù)評(píng)價(jià)圍巖變形的穩(wěn)定性并對(duì)隧道塌方進(jìn)行預(yù)警。本文基于四川境內(nèi)大量的雙車道公路隧道監(jiān)控量測(cè)數(shù)據(jù),對(duì)圍巖穩(wěn)定性及塌方預(yù)警做了以下研究。主要研究成果如下:(1)通過(guò)搜集四川境內(nèi)雙車道公路隧道施工監(jiān)控量測(cè)數(shù)據(jù),得到圍巖的變形數(shù)據(jù)。通過(guò)回歸分析和數(shù)理統(tǒng)計(jì)的方法對(duì)數(shù)據(jù)進(jìn)行分析,得到圍巖變形隨時(shí)間的變化規(guī)律和變形穩(wěn)定值的范圍。(2)通過(guò)圍巖變形數(shù)據(jù)進(jìn)行反分析計(jì)算圍巖的力學(xué)參數(shù)。采用FLAC3D對(duì)隧道開(kāi)挖進(jìn)行三維數(shù)值模擬計(jì)算,分析在不同的圍巖級(jí)別及不同埋深情況下圍巖變形全位移以及圍巖變形的釋放率。(3)采用突變理論與數(shù)值計(jì)算相結(jié)合的方法,分析不同的圍巖級(jí)別在不同埋深情況下節(jié)點(diǎn)變形控制值和隧道斷面面積變化控制值并建立圍巖塌方三級(jí)預(yù)警體系。
[Abstract]:With the wide application of the new Austrian construction technology, people pay more and more attention to the deformation of surrounding rock. At present, in the process of tunnel construction, the method of monitoring and measuring is mainly used to obtain the deformation of surrounding rock. The stability of surrounding rock deformation is evaluated by the measured data and the tunnel collapse is forewarned. Based on a large number of monitoring data of two-lane highway tunnel in Sichuan Province, the stability of surrounding rock and early warning of collapse are studied in this paper. The main research results are as follows: (1) the deformation data of surrounding rock are obtained by collecting the monitoring data of the construction of two-lane highway tunnel in Sichuan Province. By means of regression analysis and mathematical statistics, the variation law of surrounding rock deformation with time and the range of deformation stability value are obtained.) the mechanical parameters of surrounding rock are calculated by back analysis of surrounding rock deformation data. The three-dimensional numerical simulation of tunnel excavation is carried out by using FLAC3D, and the total displacement of surrounding rock deformation and the release rate of surrounding rock deformation under different surrounding rock levels and different burial depths are analyzed. The catastrophe theory is combined with numerical calculation method to analyze the total displacement of surrounding rock deformation and the release rate of surrounding rock deformation. This paper analyzes the control value of node deformation and the change of tunnel cross-section area in different surrounding rock classes under different burying depth and establishes the three-level early warning system of surrounding rock collapse.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U456.3;U451.2

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