高速公路岩溶隧道综合超前地质预报研究

Advanced Geological Prediction in Highway Tunnel of Karst Area

岩溶地区隧道等地下工程施工过程中,对掌子面前方不良地质体的发育情况进行准确及时预报,是当前隧道设计施工中亟待研究与解决的关键问题。本文首先总结分析了各种常用的超前地质预报方法的优缺点,在岩溶隧道中继承、发展前人超前地质预报的思想;然后重点介绍和分析了成功的隧道超前地质预报工程实例。在坚持长短结合、地质与物探结合、合理搭配、贯穿全程的基本原则下,综合超前地质预报技术和方法能很好地预报掌子面前方岩溶的位置、规模、形态和填充情况,验证其适合复杂地质条件下岩溶隧道的超前地质预报工作。此工作对岩溶地区高速公路隧道超前地质预报工作提供一定的帮助和指导。

The precise and immediate advance forecast to front defective geology of tunnel face is the key problem to be researched and solved currently in tunnel design and construction,which brings safety and practical value in karst area tunnel construction.The advantage and disadvantage of conventionally advance forecast technologies are first summarized and analyzed in this paper,and the idea of advance forecast technologies in karst tunnel is adopted and developed.Then the successful engineering examples of advanced geological predication in karst tunnel is introduced and analyzed emphatically.The principles including combine geologica and physical detect,rational coordination,throughout the whole process are followed,and the conditions of karst around face tunnel like location,scale,shape and conditions of filling can be forecast.Also the advance geological forecast to tunnel of highway which located in karst areas is verified.This work helps and instructs the advance geological forecast in karst area.