节点文献
复杂岩溶地区隧道施工综合地质预报技术及工程应用
【作者】 徐贵辉；
【导师】 张家生；
【作者基本信息】 中南大学 ， 岩土工程， 2010， 硕士
【摘要】 岩溶问题始终是困扰隧道工程界的一个大难题。近年来,随着西部开发建设的需要,我国广泛的岩溶地区正在修建大量的公路隧道和铁路隧道,面临的施工难题也日益复杂,如何提高岩溶地区地质预报准确性已经成为迫切需要解决的课题。本论文通过理论分析和现场试验方法,结合依托工程,对复杂岩溶地区隧道综合地质超前预报技术进行研究,旨在提高复杂岩溶地区地质超前预报准确率。本课题具体研究内容和所取得的成果为：(1)分析了岩溶地区岩溶地质灾害的成因、分布规律及特点,研究了岩溶地质灾害对隧道的危害,明确了岩溶地区隧道超前地质预报的范围和内容。(2)探讨了隧道地震波法(TSP)的工作原理、观测方式和资料解译方法,对数据采集和数据处理中常见典型问题进行了分析和探讨,建立了常见不良地质体的判识准则。(3)探讨了探地雷达法(GPR)的工作原理、观测方式和资料解译方法,总结了各种不良地质体在地质雷达图像中的特点和解译原则。(4)针对岩溶地质条件下高风险隧道超前地质预报问题进行探讨和分析,分析比较地震波反射法和探地雷达法的优缺点,提出岩溶环境下基于TSP法和GPR法的综合地质超前预报方法,实际应用表明：采用综合地质超前预报方法,可大大提高复杂岩溶地区地质超前预报准确率。
【Abstract】 The tunnel engineering has always been troubled by the karst issue.In recent years, with the development and construction in western China, a large number of road tunnels and railway tunnels have been building in extensive karst regions, the construction problems have been complex increasingly, how to improve the accuracy of karst geological prediction has become an issue which is be solved urgent. This paper through theoretical analysis and field testing methods, combined with support projects, study of tunnel comprehensive geological prediction in complex karst region, in order to improve the accuracy of geological prediction in karst region.The specific research of this paper says:(1) Analysised the causes、distribution and feature of the karst hazards in karst region, studyed the harm which the karst geological disasters to the tunnel, determined the range and content of tunnel geological prediction in karst region.(2) Discussed the working principle of the TSP method, observation methods and data interpretation methods, discussed the typical problems in data acquisition and data processing, established a Criterion of common adverse geological.(3) Discussed the working principle of GPR method, observation methods and data interpretation, summarized the features and the interpretation of principles in various adverse geological radar images.(4) Discussed the geological prediction problem of high risk tunnel in complex karst region.Compared the excellence and flaw of the TSP method and GPR method,pointed the advantage of the comprehensive geological prediction method of "TSP+GPR" and had practical application in railway tunnel. The application shows that:an comprehensive geological prediction method can greatly improve the accuracy of geological prediction in karst region.