【摘要】：隨著我國(guó)交通系統(tǒng)的不斷完善,特別是近幾年大量高速鐵路隧道工程陸續(xù)開(kāi)工建設(shè),其工程地質(zhì)條件也日趨復(fù)雜,過(guò)去單純的經(jīng)驗(yàn)施工和工程類比法已不能滿足現(xiàn)場(chǎng)施工的實(shí)際需要,必須通過(guò)現(xiàn)場(chǎng)實(shí)時(shí)監(jiān)測(cè),獲取隧道的圍巖變化規(guī)律,并及時(shí)對(duì)其進(jìn)行預(yù)處理分析,將分析結(jié)果及時(shí)反饋于業(yè)主、設(shè)計(jì)單位、監(jiān)理及施工單位,以便各單位對(duì)隧道變形做出科學(xué)預(yù)測(cè)并優(yōu)化改善隧道設(shè)計(jì)及其開(kāi)挖支護(hù)方案,以降低施工成本,提高施工速度。本文以牛頭山隧道開(kāi)挖為工程背景,對(duì)信息反饋技術(shù)在隧道施工中的應(yīng)用進(jìn)行研究,主要內(nèi)容有:首先,根據(jù)牛頭山隧道實(shí)際圍巖情況、施工情況,確定適合牛頭山隧道施工的隧道監(jiān)測(cè)方案,并選擇科學(xué)合理的監(jiān)測(cè)斷面布點(diǎn)方式;其次,實(shí)時(shí)監(jiān)測(cè)各設(shè)計(jì)監(jiān)測(cè)斷面監(jiān)測(cè)項(xiàng)目,對(duì)監(jiān)測(cè)數(shù)據(jù)進(jìn)行預(yù)處理,并建立六種函數(shù)回歸模型,利用origin軟件對(duì)預(yù)處理結(jié)果通過(guò)六種回歸模型進(jìn)行比較分析,獲得圍巖變形、拱頂收斂及地表沉降規(guī)律函數(shù);最后,對(duì)回歸函數(shù)進(jìn)行求導(dǎo),獲得圍巖變形、拱頂收斂及地表沉降速率變化函數(shù),繪制變化曲線,對(duì)牛頭山隧道開(kāi)挖方案和支護(hù)方案進(jìn)行優(yōu)化,并通過(guò)試驗(yàn)段對(duì)優(yōu)化效果進(jìn)行了驗(yàn)證,結(jié)果表明優(yōu)化方案是科學(xué)合理的。信息反饋技術(shù)在牛頭山隧道中的成功運(yùn)用極大降低了牛頭山隧道施工風(fēng)險(xiǎn),提高了工程質(zhì)量,對(duì)其他各類工程施工也具有借鑒意義。
[Abstract]:With the continuous improvement of the transportation system in China, especially the construction of a large number of high-speed railway tunnel projects in recent years, the engineering geological conditions are becoming more and more complex. In the past, the simple experience construction and the engineering analogy method can not meet the actual needs of the field construction. It is necessary to obtain the change law of the surrounding rock of the tunnel through the real time monitoring on the spot, and carry on the preprocessing analysis to it in time. The analysis results are fed back to the owners, design units, supervision and construction units in time, so that each unit can make scientific prediction of tunnel deformation and optimize and improve the tunnel design and excavation support scheme, so as to reduce the construction cost and improve the construction speed. Taking Niutoushan tunnel excavation as the engineering background, this paper studies the application of information feedback technology in tunnel construction. The main contents are as follows: first, according to the actual surrounding rock condition of Niutoushan tunnel, the construction situation, Determine the tunnel monitoring scheme suitable for Niutoushan tunnel construction, and choose a scientific and reasonable monitoring section distribution method; Secondly, the monitoring items of monitoring sections are monitored in real time, the monitoring data are pretreated, and six kinds of function regression models are established. The results of preprocessing are compared and analyzed by six regression models using origin software, and the deformation of surrounding rock is obtained. The law function of arch roof convergence and surface subsidence; Finally, the derivation of the regression function is carried out, and the deformation of surrounding rock, the convergence of arch roof and the change function of surface subsidence rate are obtained, the change curve is drawn, and the excavation scheme and supporting scheme of Niutoushan tunnel are optimized. The results show that the optimization scheme is scientific and reasonable. The successful application of information feedback technology in Niutoushan tunnel has greatly reduced the construction risk of Niutoushan tunnel, improved the engineering quality, and also has reference significance for other kinds of engineering construction.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U455.4

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本文編號(hào)：2381596