本文選題：涌水突泥段 + 監(jiān)控量測　； 參考：《長安大學》2014年碩士論文

【摘要】：隨著我國公路交通業(yè)的快速發(fā)展，興建的道路越來越多，，而在山區(qū)，隧道成了很多設計者的首選，但是復雜地質條件給隧道的設計施工帶來了很多困難一些隧道處于斷層破碎帶，巖體的承載能力低，穩(wěn)定性差，加之有地下水等匯集，很容易發(fā)生涌水突泥塌方等災害，不同程度的影響工程進度，嚴重的造成施工安全，不但當前工程質量不能保證，甚至對后期的運營產生造成影響因此對涌水突泥等不良地質段隧道結構受力與變形進行研究是有必要的 本文以岑（溪）水（汶）高速嶺腳隧道為依托，對其涌水突泥段圍巖結構的受力與變形特性進行分析研究，最后結合測試值計算值與材料的設計值進行對比來評價隧道圍巖以及支護結構的安全性 首先，對涌水突泥段工程概況和處治措施進行介紹，對隧道結構的位移受力進行了現場測試：選取涌水突泥段典型斷面埋設壓力盒表面應變計混凝土應變計和鋼筋計等測試元件，量測內容包括拱頂下沉周邊收斂，圍巖壓力鋼架應力錨桿應力初期支護與二次襯砌間的接觸壓力二次襯砌應力等通過對測試數據的分析，得出圍巖支護系統的受力與變形特性，計算初期支護和二次襯砌的荷載分擔比 其次，利用MIDAS/GTS有限元分析軟件進行三維數值模擬計算，從理論上分析初期支護結構的受力及變形，并且通過現場監(jiān)控量測數據同數值模擬的計算結果進行對比分析論證 最后，對隧道支護結構進行安全性評價 監(jiān)測及計算結果表明，嶺腳隧道涌水突泥段采用的處理措施滿足隧道施工要求，該區(qū)域拱頂下沉及周邊收斂在合理范圍內，初期支護和二次襯砌各部位受力良好，材料未破壞，整個結構安全可靠
[Abstract]:With the rapid development of highway transportation industry in China, more and more roads are being built, and in mountainous areas, tunnels have become the first choice for many designers. But the complex geological conditions bring many difficulties to the design and construction of the tunnel. Some tunnels are in the fault broken zone, the bearing capacity of the rock mass is low, the stability is poor, and there is groundwater gathering, so it is easy to happen the disasters such as water gushing, mud inrush and collapse, etc. Affecting the progress of the project to varying degrees, causing serious construction safety, not only cannot the quality of the current project be guaranteed, So it is necessary to study the stress and deformation of tunnel structure in bad geological section, such as water gushing and mud outburst. Based on Cen (Xi) water (Wen) high speed Lingqiao tunnel, this paper analyzes and studies the stress and deformation characteristics of surrounding rock structure of water gushing mud section. Finally, the safety of surrounding rock and supporting structure of tunnel is evaluated by comparing the calculated value of test value with the design value of material. First of all, the general situation and treatment measures of water gushing mud section are introduced. The displacement force of tunnel structure is tested on the spot: the pressure box surface strain gauge, concrete strain gauge and steel bar gauge are embedded in typical sections of water gushing mud section. The measuring contents include the convergence of the circumference of the dome subsidence. Contact pressure secondary lining stress between initial stress support and secondary lining of surrounding rock pressure steel frame the stress and deformation characteristics of surrounding rock support system are obtained through analysis of test data. Calculation of load-sharing ratio for primary support and secondary lining Secondly, the three-dimensional numerical simulation is carried out by using MIDAS/GTS finite element analysis software, and the stress and deformation of the initial supporting structure are analyzed theoretically, and the results of field monitoring and measurement are compared with the results of numerical simulation. Finally, the safety evaluation of tunnel support structure is carried out. The results of monitoring and calculation show that the treatment measures adopted in the water gushing and mud-bursting section of Lingjiao tunnel meet the requirements of tunnel construction, the dome subsidence and circumference converge within a reasonable range, the initial support and secondary lining are well loaded, and the materials are not destroyed. The whole structure is safe and reliable
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U452.1

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本文編號：1925138