高压富水隧道渗流分析与施工措施研究

发布时间：2018-03-17 17:15

本文选题：高压富水隧道　切入点：堵水限排　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：“长、大、深”隧道往往伴随着高压富水现象，目前在高压富水地区修建隧道是国内外共同面对的技术难题。尤其是当今对环保要求较高的背景下，必须改变以往“以排为主”的设计方法，采取“以堵为主”的治水方案。本文主要研究了高水压富水地段隧道渗流场规律、抗水压衬砌型式及施工措施。 1．采用数值模拟和理论解析法对注浆圈渗透系数、厚度及注浆圈和衬砌外水压力之间各量关系进行了研究，为确定合理的注浆厚度、渗透系数以及初支的设计提供理论的依据。 2．采用疏干漏斗法确定疏干影响范围，通过补给与排水平衡的方法确定合理的排水量，为设计排水量提供理论依据。 3．采用数值模拟方法研究了流固耦合并满足建筑界限的条件下，不同的断面进行安全性和经济性综合评价，选出最优断面。 4．在最优断面条件下考虑渗流与未考虑渗流场开挖应力和位移进行分析。 5．对具体的工程提出有针对性的预处理措施、开挖措施及防排水措施。
[Abstract]:"long, large and deep" tunnels are often accompanied by the phenomenon of high pressure water enrichment. At present, the construction of tunnels in high-pressure water-rich areas is a common technical problem both at home and abroad. It is necessary to change the design method of "drainage mainly" and adopt the water control scheme of "blockage". This paper mainly studies the law of seepage field, the type of anti-hydraulic lining and the construction measures of the tunnel in the section of high water pressure and rich water. 1. Numerical simulation and theoretical analysis are used to study the relationship between grouting ring permeability coefficient, thickness and the pressure of grouting ring and lining water, which provides a theoretical basis for determining the reasonable grouting thickness, permeability coefficient and the design of initial support. 2. The method of dredging funnel is used to determine the influence range of dredging, and the reasonable displacement is determined by the method of balance between recharge and drainage, which provides the theoretical basis for the design of drainage. 3. Under the condition of fluid-solid coupling and building boundary, the safety and economy of different sections are evaluated by numerical simulation method, and the optimal section is selected. 4. The excavation stress and displacement of seepage field are analyzed under the condition of optimum section. 5. The pre-treatment measures, excavation measures and waterproof and drainage measures are put forward for specific projects.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U452.11;U455.49

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