宜万铁路运营期地质灾害风险管理体系研究

发布时间：2018-03-16 03:25

本文选题：宜万铁路　切入点：地质灾害　出处：《北京交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：摘要：宜万线铁路隧道地质条件和施工技术复杂,设计时对地质条件的认识尚不够全面准确,隧道本身老化以及造价、管理等原因,隧道病害问题较为突出。如何利用无损检测所得数据来定量评估隧道病害已成了隧道病害诊断研究中的一个急待解决的问题,且现有隧道风险分析研究主要针对铁路、公路隧道施工期风险,在铁路隧道运营期风险分析,特别是岩溶隧道运营期风险分析方面研究的很少。因此,针对我国铁路隧道中不断出现的隧道病害问题,建立定量化的病害综合诊断方法和风险管理技术是相当重要和迫切的。本文在大量文献研究和现场调研基础上,对宜万线铁路隧道病害综合诊断方法,引入风险分析理论,实现铁路隧道的风险管理,构建风险管理模式和标准,为决策提供依据。 (1)通过现场调研和资料分析,归纳分析了宜万线铁路隧道病害种类和成因,在以往关于隧道衬砌状态评估经验积累和吸收已有状态评估方法及标准优点的基础上,参照相关隧道状态技术规范,从过去简单的定性分析、单纯现象分析、经验类比为依据的评估方法过渡到建立多种手段获取定量评价指标的衬砌状态评估体系,研究隧道病害等级判定标准,实现了从隧道衬砌相关检测数据到衬砌状态等级评估认定。 (2)由于宜万线铁路隧道病害种类多,须对影响隧洞安全因素综合考虑,参照国内外铁路、公路隧道的分级研究,在对宜万线铁路隧道安全分级的基础上,利用层次分析法、神经网络技术和模糊综合评价模型,建立了铁路隧道病害综合诊断的评价指标体系和评价方法,实现了铁路隧道病害诊断模糊综合评价。 (3)结合背景工程的特点,以宜万线大支坪隧道为依托,针对性的对大支坪隧道+990段运用模糊综合评价模型进行隧道安全评估分析,分析结果与实际工程状况相符合。论文以宜万铁路隧道运营期病害检测资料为基础,进行了铁路隧道病害分类和分级,提出了铁路隧道病害模糊综合评价模型,建立了病害评价标准,解决了宜万线铁路隧道病害诊断和风险管理中存在的关键技术问题,研究成果应用与工程实践,不仅对宜万铁路隧道的养护、维修和建设具有指导作用,而且对今后岩溶地区的隧道工程进行隧道病害诊断提供借鉴和参考。
[Abstract]:Abstract: the geological conditions and construction technology of Yi-Wan railway tunnel are complex, the understanding of geological conditions is not comprehensive and accurate enough, the tunnel itself is aging, the cost, management and other reasons, etc. The problem of tunnel disease is more prominent. How to use the data obtained from NDT to quantitatively evaluate the tunnel disease has become an urgent problem to be solved in the tunnel disease diagnosis research, and the existing tunnel risk analysis research is mainly aimed at the railway. The risk of highway tunnel during construction period is seldom studied in the risk analysis of railway tunnel operation period, especially in karst tunnel operation period. It is very important and urgent to establish quantitative comprehensive diagnosis method and risk management technology. On the basis of a lot of literature research and field investigation, this paper introduces the theory of risk analysis to realize the risk management of railway tunnel, constructs the risk management model and standard, and provides the basis for decision making by introducing the risk analysis theory to the comprehensive diagnosis method of railway tunnel diseases. 1) through field investigation and data analysis, this paper sums up and analyzes the types and causes of railway tunnel diseases on Yi-Wan railway line, and on the basis of the accumulation and absorption of the existing methods and standards for evaluating the condition of tunnel lining in the past, Referring to the relevant technical specifications of tunnel state, from simple qualitative analysis, simple phenomenon analysis and empirical analogy evaluation method to the establishment of lining state evaluation system, which can obtain quantitative evaluation indexes by various means, This paper studies the criteria of tunnel disease grade, and realizes the evaluation of tunnel lining condition from tunnel lining detection data to lining status evaluation. 2) as there are many kinds of diseases in Yi-Wan railway tunnel, it is necessary to consider comprehensively the factors affecting the tunnel safety. Referring to the classification study of railway and highway tunnel at home and abroad, on the basis of the safety classification of Yi-Wan railway tunnel, the Analytic hierarchy process (AHP) is used. Neural network technology and fuzzy comprehensive evaluation model are used to establish the evaluation index system and evaluation method of railway tunnel disease comprehensive diagnosis, and the fuzzy comprehensive evaluation of railway tunnel disease diagnosis is realized. In combination with the characteristics of the background engineering, based on the Daziping Tunnel of Yi-Wan Line, the fuzzy comprehensive evaluation model is used to evaluate and analyze the tunnel safety in the section 990 of Dajiping Tunnel. The analysis results are in accordance with the actual engineering situation. Based on the inspection data of railway tunnel diseases in Yi-wan railway tunnel, the classification and classification of railway tunnel diseases are carried out, and the fuzzy comprehensive evaluation model of railway tunnel diseases is put forward, and the evaluation criteria are established. The key technical problems in disease diagnosis and risk management of Yi-Wan railway tunnel are solved. The application of research results and engineering practice can not only guide the maintenance, maintenance and construction of Yi-Wan railway tunnel. It also provides reference and reference for tunnel disease diagnosis in karst area.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U457

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