摘要
地震波反射或散射原理的成像技术是山岭隧道超前地质预报中常用的一种手法。基于Tunnel Seismic Tomography(TST)超前地质预报系统,以厦门北动车所新建刘塘隧道左洞为应用背景,阐述了TST系统的基本原理、数据采集与数据后处理。结合刘塘隧道的区域地质分析,根据地震波偏移图特征和围岩波速分布,准确给出了预报范围内的围岩分级,并预测了掌子面前方的断层位置。
The tomography technology based on seismic reflection or seismic scattering is common method used in the tunnel advanced geology prediction. Using the TST advanced geology prediction system,taking the newly-built Liutang tunnel in Xiamen north railway station as example,the basic principle,the data collection and the data post-process of tunnel seismic tomography system are presented. Based on the regional geology analysis,according to the seismic migration imaging and the wave velocity distribution of surrounding rock,the surrounding rock classification is accurately given within the prediction and the position of fault zone in front of the tunnel face is well predicted.
作者
刘四德
LIU Side(The 3rd Construction Co. , Ltd. , China Railway Construction 22th Corporation, Xiamen 361010, Fujian, Chin)
出处
《路基工程》
2018年第3期199-203,共5页
Subgrade Engineering
关键词
超前地质预报
地震波成像
偏移图
围岩波速
断层破碎带
advanced geology prediction
seismic tomography
migration imaging
wave velocity of surrounding rock
fault zone
