TSP在隧道工程施工中的常见干扰和对岩体裂隙水及软弱夹层等的预报研究  

Common interference and the prediction of rock fissure water and weak interlayer in tunnel construction using TSP

作　　者：张杨[1] 杨君[1] 周黎明[1] 肖国强[1] ZHANG Yang;YANG Jun;ZHOU Li-ming;XIAO Guo-qiang(Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China)

机构地区：[1]长江科学院水利部岩土力学与工程重点实验室,武汉430010

出　　处：《地球物理学进展》2018年第2期892-899,共8页Progress in Geophysics

基　　金：国家重点研发计划项目(2017YFC1501200;2017YFC1502600)资助

摘　　要：针对TSP在隧道工程施工探测中可能遇到的常见干扰和典型不良地质体,探讨了常见干扰的成因及其对资料解释的影响,确定干扰信息在原始数据上的反映,并分别对由于震源和接收器等引起的典型质量不佳数据进行分析,提出TSP在采集数据过程中避开干扰的注意事项.列举两个工程实例,分别介绍了TSP对岩体裂隙水、软弱夹层等不良地质体的预报研究,通过分析其典型围岩力学参数成果图、纵波偏移剖面图和2D成果图等特征,依此推断出隧道开挖掌子面前方潜在不良地质体的类型以及位置、构造走向等空间分布特征.该结果与实际开挖揭示的不良地质体的分布范围基本一致,验证了TSP在预报隧道常见不良地质体的可行性和有效性.通过总结分析常见TSP干扰的成因和典型不良地质体TSP成果图,有助于为物探工作者对复杂地质体进行更精确地解释提供参考,确保隧道施工安全.According to the common TSP interference and typical bad geological body may be encountered in the construction of tunnel engineering,we discusses the common causes of interference and their influence on data interpretation,determine the reflected interference information on the original data,and we gives examples of poor quality of data caused by poor source and receiver. we puts forward precautions to avoid the interference in the process of acquisition of TSP data. Cite two engineering examples,respectively introduces TSP on the prediction of fracture water,rock interlayer and other adverse geological characteristics,through the analysis of the typical mechanical parameters of surrounding rock,longitudinal offset profile maps and 2 D maps, the spatial distribution characteristics of the type,location and structure of the potential bad geological body are predicted. The results are basically consistent with the distribution range of the bad geological bodies,which is proved by the actual excavation,and the feasibility and effectiveness of the TSP in the prediction of the common bad geological bodies are verified. Through summarizing and analyzing the causes of the common TSP interference and the TSP map of the typical bad geological body,it is helpful to provide a reference for the geophysical workers to explain the complex geological body more precisely,and to ensure the safety of the tunnel construction.

关 键 词：隧道超前预报 TSP 干扰因素 典型不良地质体 

分 类 号：P631[天文地球—地质矿产勘探]