本文選題：育王嶺隧道 + 監(jiān)控量測�。� 參考：《湖南科技大學》2015年碩士論文

【摘要】：隨著近年來,國家經(jīng)濟越來越發(fā)達,國家對交通建筑行業(yè)投資也越來越大,城市輕軌建設為民生、經(jīng)濟和交通運營帶來了極大便利。本文結合寧波輕軌育王嶺隧道項目的工程實踐進行研究,隧道位于329國道瓔珞村南側,隧道長1380m,為北侖區(qū)和鄞州區(qū)的交界處。北侖鐵路貨運支線緊挨通過,旁邊有浙江著名古寺阿育王寺,本文主要以隧道圍巖穩(wěn)定性分析與評價為主,以保證施工質量和洞體安全穩(wěn)定為核心,采用監(jiān)測變形分析等手段,對隧道圍巖穩(wěn)定性進行分析。論文通過對隧址區(qū)工程地質條件分析判定圍巖等級,定性評價圍巖的穩(wěn)定性,實時掌握監(jiān)控量測數(shù)據(jù),對圍巖變形進行評估和預測,再利用數(shù)值模擬方法分析洞體施工對圍巖應力應變場的影響,對隧道圍巖變形破壞機制進行研究。從不同等級圍巖變形的監(jiān)測數(shù)據(jù)與數(shù)值模擬結果進行比較,可反饋設計和施工,對隧道建設積累一定的工程經(jīng)驗并最終評價圍巖穩(wěn)定性。論文工作主要涵蓋了以下內容:首先,詳細分析了育王嶺隧道的工程地質條件,包括區(qū)域地質構造、區(qū)域地震、區(qū)域地層巖性等。隧址區(qū)地質條件包括地層巖性、地質構造、水文地質條件、不良地質現(xiàn)象等。對隧址區(qū)圍巖的特征進行定性分析,根據(jù)圍巖分級劃分依據(jù),劃分各地段的圍巖分級,不同級別的圍巖有著不同的變形破壞特征,結合以上資料,對洞身圍巖和出洞口以及進洞口邊坡進行了圍巖穩(wěn)定性評價。其次,為防止隧道洞體塌方和圍巖出現(xiàn)較大變形,影響工程質量和進度并對現(xiàn)場工作人員帶來一定的危害,需要實施監(jiān)控量測工作,主要監(jiān)控進出洞口地表沉降、洞身拱頂沉降與周邊收斂等,通過現(xiàn)場一年多量測施工得到圍巖變形的數(shù)據(jù),得出施工過程中圍巖應力應變規(guī)律,在符合有關標準下,結合設計、施工和監(jiān)測方案對圍巖破碎、穩(wěn)定性差地段進行重點監(jiān)測,選取若干不同圍巖等級斷面根據(jù)監(jiān)測成果分析圍巖穩(wěn)定性。最后,本文選取育王嶺隧道出口圍巖較破碎地段進行隧道圍巖變形的數(shù)值模擬,建立起隧道三維工程地質模型,選取相關參數(shù)運用計算軟件FLAC3D對隧道開挖支護前后的圍巖應力應變場的特征進行研究,再結合監(jiān)測數(shù)據(jù)結果進行對比分析,可反饋和指導施工,對正確評價隧道圍巖穩(wěn)定性有著深刻意義。論文研究成果將為隧道設計跟施工帶來工程借鑒與經(jīng)驗。
[Abstract]:In recent years, the national economy is more and more developed, the state of traffic construction investment is also growing, city rail construction for the people's livelihood, economy and transportation has brought great convenience. Combining with the engineering practice of Ningbo light rail tunnel project of Yu Wang Ling tunnel, located on the south side of state Road 329 Ying Luo village, the length of the tunnel is 1380m, for at the junction of Beilun and Yinzhou District. Beilun railway freight line next to pass, next to the famous Zhejiang Temple Ashoka temple, based mainly on the analysis and evaluation of the stability of tunnel surrounding rock, in order to ensure construction quality and safety and stability of tunnel body as the core, the deformation monitoring methods on the stability of tunnel surrounding rock based on the analysis. The engineering geological conditions of tunnel surrounding rock stability analysis to determine the level of qualitative evaluation of surrounding rock, real-time monitoring data, the deformation of surrounding rock in evaluation and prediction Then, the numerical analysis of cave construction stress field of surrounding rock simulation, deformation and failure mechanism of the surrounding rock of the tunnel. From the comparison of monitoring data and numerical simulation of different grades of surrounding rock deformation results, the feedback of design and construction, accumulated certain experience in engineering construction on the tunnel and surrounding rock stability evaluation. The main work of the paper includes the following contents: firstly, a detailed analysis of the engineering geological conditions of Yu Wang Ling tunnel, including regional geological structure, earthquake, regional lithology. Tunnel geological conditions including lithology, geological structure, hydrogeological condition, bad geological phenomenon. The characteristics of the surrounding rock tunnel site the qualitative analysis, according to the basis of classification of surrounding rock, the division of rock classification of various sections of the surrounding rock, different levels have different deformation characteristics, combined with the above information, the hole around the body Out of the hole and the hole and rock slope of rock stability evaluation. Secondly, in order to prevent tunnel collapse and rock large deformation, bring harm to affect the project quality and schedule and personnel on site, needs the implementation of monitoring and measurement work, the main entrance and exit for monitoring surface subsidence, vault settlement and convergence of surrounding tunnel more than a year, through on-site measurement of construction rock deformation data, the surrounding rock in the construction process of stress and strain law, combining with the design in accordance with the relevant standards, and the construction and monitoring scheme of surrounding rock is broken, poor stability and lots of key monitoring, choose several different sections according to the stability analysis of the surrounding rock grade finally monitoring results. In this paper, Yu Wang Ling tunnel surrounding rock is broken in the numerical simulation of tunnel surrounding rock deformation, establish three-dimensional tunnel engineering geological model selection The relevant parameters using the feature of tunnel excavation and surrounding rock stress and strain field calculating software FLAC3D to conduct the research, combined with the monitoring data were analyzed, the feedback and guidance of construction, has a profound significance to the correct evaluation of the stability of tunnel surrounding rock. The research results will bring reference and experience for engineering design and construction of tunnel.

【學位授予單位】：湖南科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U456.3

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本文編號：1764882