基于多源地震干涉法的隧道超前地质预报技术数值模拟研究  

Numerical Simulation of Advanced Geological Forecasting Based on MultiSource Seismic Interferometry

作　　者：吴丰收[1,2] 李静 花晓鸣[1] 李富明[1] 卢松[1] WU Fengshou;LI Jing;HUA Xiaoming;LI Fuming;LU Song(China Railway Southwest Research Institute of Co. Ltd., Chengdu 611731;Shanghai East Asia Geophysical Prospecting Co. Ltd., Shanghai 201318;Collage of Geo-Exploration Science ＆ Technology, Jilin University, Changchun 130026)

机构地区：[1]中铁西南科学研究院有限公司,成都611731 [2]上海东亚地球物理勘查有限公司,上海201318 [3]吉林大学地球探测科学与技术学院,长春130026

出　　处：《现代隧道技术》2018年第3期92-97,共6页Modern Tunnelling Technology

基　　金：中铁科研院青年基金项目(2015-KJ011-Z011-NX);中国博士后基金特别资助项目(2016T902503)

摘　　要：目前的隧道超前地质预报方法预报距离短、测试频率大,增加了测试风险和施工风险;同时,由于各种方法对测试环境要求的差异,造成准备工作繁琐,占用了较长的施工时间,影响了正常施工。文章将地震干涉技术应用到隧道超前地质预报中,提出了基于多源地震干涉法的隧道超前地质预报新技术,该技术以隧道一端开挖爆破作为震源,在隧道另一端接收信号,通过相关处理成像,实现对隧道未开挖部分的一次性预报。文章采用有限差分法实现了该预报方法的数值模拟,模拟了岩溶、断层两种不良地质体模型,准确预报出了溶洞、断层,验证了该预报方法的有效性和准确性。For existing advanced geological forecasting, the forecast distance is short and the test frequency ishigh, increasing test and construction risks. Since various methods have different requirements for the test environ-ment, preparation work can be tedious and result in a long construction time thereby affecting normal construction.A new advanced geological forecast technique based on multi-source seismic interferometry for tunnels is proposed.This technique uses the blast at one end of tunnel as a centrum and receives the signal at the other end of the tun-nel, therefore allowing advanced geological forecasting of the unexcavated tunnel part by relative processing and im-aging. A numerical simulation of this kind of geological forecasting using the finite difference method to simulatetwo kinds of unfavorable geological bodies（karst and a fault） predicted them accurately and verified the effective-ness and accuracy of this geological forecasting method.

关 键 词：多源地震 干涉法 隧道 超前地质预报 数值模拟 

分 类 号：U452.11[建筑科学—桥梁与隧道工程] U456.33[交通运输工程—道路与铁道工程]