富水岩溶隧道施工技术研究

发布时间：2018-03-28 05:04

本文选题：岩溶　切入点：高压富水溶腔　出处：《北京交通大学》2014年硕士论文

【摘要】：摘要：随着我国交通事业的发展,中西部地区的高铁建设也进入蓬勃发展的阶段。新建沪昆高铁贵州段位于云贵高原多山岩溶地带,区内山多谷深,地下岩溶发育强烈。区内隧道修建常会遇到岩溶管道、大型干溶腔、大型高压富水溶腔及断层带岩溶,这些地质灾害的处理关系到隧道的顺利修建,是岩溶区隧道修建所要处理的关键问题。顺利攻克这些难题并形成一套适应云贵高原岩溶地区的隧道修建技术,将为日后类似工程的修建提供宝贵的经验。本文依托新建沪昆高铁9标段斗磨隧道、大独山隧道的修建,通过理论分析、现场实测及数值模拟的方法,针对岩溶区隧道线路前方出现大型溶腔的情况,着重对施工处理工法进行了研究,主要完成了以下工作： (1)通过现场实测,总结出岩溶隧道富水充填型溶腔的帷幕注浆规律,并通过数值模拟,对注浆堵水效果进行了评定,对注浆参数进行了优化研究； (2)通过现场实测及多方咨询、论证,提出高压富水溶腔的处理工法,并结合现场的地质预报、水压观测,研究释能释压工法在工程中的应用。 (3)通过现场调研、案例查询,对岩溶区隧道下穿明河浅埋段施工工法进行了比较,提出可行的处置方法。
[Abstract]:Abstract: with the development of China's transportation industry, the construction of high-speed rail in the central and western regions has entered a stage of vigorous development. The new section of the Shanghai-Kunming high-speed railway Guizhou is located in the mountainous karst zone of the Yunnan-Guizhou Plateau, which is deep in mountains and valleys. The underground karst development is strong. The tunnel construction in this area will often encounter karst pipelines, large dry cavities, large high-pressure water-rich cavities and karst faults. The treatment of these geological disasters is related to the smooth construction of the tunnel. It is the key problem to deal with in tunnel construction in karst area. Solve these problems successfully and form a set of tunnel construction technology suitable for karst area of Yunnan-Guizhou Plateau. It will provide valuable experience for the construction of similar projects in the future. This paper relies on the construction of Dou Mo tunnel and Dadushan tunnel, which is the ninth section of the Shanghai-Kunming high-speed railway, through theoretical analysis, field measurement and numerical simulation. In view of the large cavities in front of the tunnel line in karst area, the construction treatment method is studied, and the following work is accomplished:. 1) the law of curtain grouting of water-rich filling cavity in karst tunnel is summarized by field measurement, and the effect of grouting plugging is evaluated by numerical simulation, and the grouting parameters are optimized. 2) based on the field measurement and multiparty consultation, this paper puts forward the treatment method of high pressure and rich water cavity, and studies the application of energy release and pressure release method in engineering combined with the field geological forecast and water pressure observation. 3) through field investigation and case inquiry, this paper compares the construction methods of the shallow buried section of the tunnel through the Ming River under the tunnel in karst area, and puts forward the feasible disposal methods.
【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】：U455.49

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