铁路隧道TGP超前地质预报系统应用探讨

Discussions on applications of advanced tunnel geology prediction system-TGP in railway tunnel engineering

通过京福铁路客运专线闽赣IV隧道工程实例,阐述了TGP地震反射波法的基本原理和过程,并分析其特点和优越性。通过工程应用研究,对TGP206系统的工作原理、数据处理、解释技术和等级分析等进行系统探讨,剖析了TGP系统进行隧道围岩类别判识及其有效性等相关问题,验证了预报结果的准确性。

With the improvement of engineering grades and the increasing complication of geological environment in tunnel excavation, advanced geology prediction becomes more and more important. TGP206 is one of the most advanced intelligent systems of geological prediction, which has the ad- vantages of convenience, high discrimination, stable and reliable performance and high signal to noise ratio. The fundamental principle and implementing process of TGP seismic-reflection method was expounded, the features and advantages of which were illustrated via the engineering example of the Fujian-Jiangxi Tunnel Ⅳ in Beijing-Fuzhou railway passenger line. Furthermore, data acquisi- tion and processing, interpretation technique and rock classification in TGP206 system were re- searched via engineering applications. Rock classification identification and its reliability as well as its relevant issues were discussed. The accuracy of the prediction was verified. The research out- comes may play some positive roles in promoting the development and application of the tunnel geo- logical prediction technology.