本文選題：擠壓破碎圍巖 + 注漿試驗　； 參考：《西安建筑科技大學》2015年碩士論文

【摘要】：在隧道修建過程中,高地應(yīng)力擠壓破碎帶圍巖大變形易導致侵限、鋼拱架凸出、初襯混凝土剝落、甚至塌方等災(zāi)害,已經(jīng)成為當前亟需解決處理的重點和難點。由于導致隧道產(chǎn)生圍巖大變形的原因很多,其機理也各不相同,工程控制措施必須具有針對性。為有效的減小和防止隧道大變形災(zāi)害的發(fā)生,本文以十天高速略陽連接線象山隧道為工程依托,采用理論分析、現(xiàn)場調(diào)查、現(xiàn)場試驗以及數(shù)值模擬的方法,研究總結(jié)了高地應(yīng)力隧道圍巖大變形產(chǎn)生的機理及控制技術(shù),主要的研究成果如下:(1)調(diào)查分析了隧道大變形區(qū)域的水文地質(zhì)及現(xiàn)場施工情況,在大變形段初襯混凝土剝落、鋼拱架彎曲變形等問題較為突出。利用現(xiàn)代量測技術(shù)對隧道進行變形及內(nèi)力監(jiān)測,通過分析得到了拱頂沉降、水平收斂、初襯與圍巖間內(nèi)力以及初襯與二襯間內(nèi)力都有著明顯的時空效應(yīng)。(2)以現(xiàn)場隧道施工工況為依據(jù),利用FLAC3D軟件,建立數(shù)值模型,并通過與現(xiàn)場監(jiān)測數(shù)據(jù)對比分析,驗證了模型的合理性。重點分析了埋深及圍巖級別兩種因素對圍巖產(chǎn)生大變形的影響。(3)利用仿真模型試驗?zāi)M現(xiàn)場圍巖注漿,對注漿效果進行評價,得出現(xiàn)場單液注漿和雙液注漿較為合理的水灰比及配比。并數(shù)值模擬分析了不同施工工藝對于圍巖變形的影響,得出了二襯較為合理的施做時機、開挖臺階及循環(huán)進尺長度。進而對現(xiàn)場隧道施工下的大變形控制起到了一定的指導意義。
[Abstract]:In the process of tunnel construction, large deformation of surrounding rock in high ground stress crushing zone will easily lead to invasion, steel arch frame protruding, initial lining concrete spalling, and even collapse and so on, which has become the focus and difficulty to solve at present. Since there are many reasons for the large deformation of surrounding rock in the tunnel, the mechanism of the tunnel is different, so the engineering control measures must be targeted. In order to effectively reduce and prevent the occurrence of the large deformation disaster of the tunnel, this paper takes the Xiangshan tunnel, a 10-day high-speed Luoyang connecting line, as the engineering support, and adopts the methods of theoretical analysis, field investigation, field test and numerical simulation. The mechanism and control technology of large deformation of surrounding rock of tunnel with high in-situ stress are studied and summarized. The main research results are as follows: 1) the hydrogeology and site construction in large deformation area of tunnel are investigated and analyzed, and the initial lining concrete peeling off in large deformation section. Steel arch frame bending deformation and other problems are more prominent. The deformation and internal force of the tunnel are monitored by the modern measurement technology. Through the analysis, the settlement of the vault is obtained, and the horizontal convergence is obtained. The internal force between the initial lining and the surrounding rock and the internal force between the initial lining and the second liner have obvious space-time effect. Based on the working conditions of the field tunnel construction, the numerical model is established by using FLAC3D software, and the numerical model is compared with the field monitoring data. The rationality of the model is verified. The influence of two factors, the depth of burying and the grade of surrounding rock, on the large deformation of surrounding rock is analyzed emphatically. The grouting effect of surrounding rock is evaluated by simulation model test. The reasonable water cement ratio and ratio of single and double liquid grouting are obtained. The influence of different construction technology on the deformation of surrounding rock is analyzed numerically, and the reasonable timing of the second lining, the excavation step and the length of the circular ruler are obtained. Furthermore, it plays a guiding role in the control of large deformation in the field tunnel construction.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U455.49

【參考文獻】

相關(guān)期刊論文 前7條

1 姜云,李永林,李天斌,王蘭生;隧道工程圍巖大變形類型與機制研究[J];地質(zhì)災(zāi)害與環(huán)境保護;2004年04期

2 何滿潮;煤礦軟巖變形力學機制與支護對策[J];水文地質(zhì)工程地質(zhì);1997年02期

3 高軍,趙運臣;隧道變形監(jiān)測新技術(shù)的應(yīng)用研究[J];西部探礦工程;2001年03期

4 張民慶;張文強;孫國慶;;注漿效果檢查評定技術(shù)與應(yīng)用實例[J];巖石力學與工程學報;2006年S2期

5 趙星光;邱海濤;;光纖Bragg光柵傳感技術(shù)在隧道監(jiān)測中的應(yīng)用[J];巖石力學與工程學報;2007年03期

6 劉志春;李文江;朱永全;孫明磊;;軟巖大變形隧道二次襯砌施作時機探討[J];巖石力學與工程學報;2008年03期

7 李術(shù)才;張偉杰;張慶松;張霄;劉人太;潘光明;李志鵬;車宗原;;富水斷裂帶優(yōu)勢劈裂注漿機制及注漿控制方法研究[J];巖土力學;2014年03期

相關(guān)博士學位論文 前1條

1 鄭玉輝;裂隙巖體注漿漿液與注漿控制方法的研究[D];吉林大學;2005年

相關(guān)碩士學位論文 前5條

1 王西寧;軟弱圍巖流變分析及其支護方法研究[D];西南交通大學;2007年

2 楊永斌;井溝嶺隧道監(jiān)控量測分析及其在工程施工中的應(yīng)用[D];重慶交通大學;2008年

3 王魯南;隧道穿越斷層破碎帶施工風險分析及圍巖變形規(guī)律研究[D];山東大學;2012年

4 劉光明;軟弱破碎圍巖隧道大變形機理及控制措施研究[D];中南大學;2012年

5 徐大華;高地應(yīng)力破碎圍巖大變形控制技術(shù)研究[D];石家莊鐵道大學;2013年

，

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