岩溶地区公路隧道渗漏水处治原则研究

发布时间：2018-07-09 23:16

本文选题：岩溶地区 + 公路隧道　；参考：《西南交通大学》2014年硕士论文

【摘要】：近年来,随着公路营运隧道数量和里程逐年增加,隧道在营运过程中暴露病害愈加频繁。在众多隧道病害中,隧道渗漏水病害因其分布范围广、危害程度高、治理难度大等特点备受关注。因此开展隧道渗漏病害的产生机制以及渗漏病害的处治方法研究就显得十分急迫。本文以重庆地区出现严重渗漏水病害的公路隧道为工程背景,归纳总结了岩溶地区隧道渗漏病害分布特征,揭示了隧道渗漏水病害成因。基于数值模拟手段,探讨了岩溶地区公路隧道渗漏水病害形成机制,并开展了针对性的渗漏病害处治原则及措施研究。研究内容和成果如下： (1)基于对重庆地区15座渗漏水病害较为严重的营运高速公路隧道相关资料的整理分析,定量的评价了其渗漏病害的严重程度。探明了隧道渗漏水病害的时间和空间分布规律,揭示了其渗漏病害成因。 (2)引入温度场比拟渗流场的方法,从隧道衬砌水压分布规律和支护结构安全性能两方面,探讨了岩溶地区降雨引起的地下水位变化、充水性岩溶裂隙(管道)、隧道排水系统劣化所导致的渗漏病害的发生发展机制。 (3)根据隧道病害区段衬砌是否承受水压,将隧道渗漏病害分为承压带渗漏病害和非承压带渗漏病害。结合岩溶地区公路隧道渗漏病害的时空分布特点和渗漏病害发生发展机制,分别研究了承压带渗漏病害和非承压带渗漏病害的处治原则和处治措施。
[Abstract]:In recent years, with the increasing number and mileage of highway operating tunnels, more and more tunnel diseases are exposed. Among many tunnel diseases, tunnel leakage disease has attracted much attention because of its wide distribution, high degree of harm and difficulty in treatment. Therefore, it is urgent to study the mechanism and treatment of tunnel leakage disease. In this paper, based on the engineering background of highway tunnel with serious leakage disease in Chongqing area, the distribution characteristics of tunnel leakage disease in karst area are summarized, and the causes of tunnel leakage disease are revealed. Based on the method of numerical simulation, the formation mechanism of leakage disease of highway tunnel in karst area is discussed, and the principles and measures of dealing with leakage disease are studied. The research contents and results are as follows: (1) based on the analysis of the related data of 15 serious seepage diseases in Chongqing, the degree of leakage is quantitatively evaluated. The temporal and spatial distribution law of tunnel leakage disease is proved, and the cause of seepage disease is revealed. (2) the method of comparing seepage field with temperature field is introduced, from two aspects of tunnel lining water pressure distribution law and supporting structure safety performance, This paper discusses the groundwater level change caused by rainfall in karst area, the occurrence and development mechanism of leakage disease caused by water-filled karst fissure (pipeline) and tunnel drainage system deterioration. (3) according to whether the lining of tunnel disease section bears water pressure, Tunnel leakage disease is divided into confined zone leakage disease and non-pressure band leakage disease. Combined with the characteristics of space-time distribution and the mechanism of occurrence and development of leakage disease of highway tunnel in karst area, the principles and measures of treatment of leakage disease in confined zone and non-confined zone are studied respectively.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U457.2

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