线性台阵被动源面波法在地下空间探测中的应用  

Application of linear-array passive source surface wave method in underground space exploration

作　　者：陈爽爽 李鹏 张智 王超凡 CHEN Shuangshuang;LI Peng;ZHANG Zhi;WANG Chaofan(Changjiang Geophysical Exploration and Testing Co.,Ltd.,Wuhan 430014,China;Chinese Academy of Geotechnical Engineering,Beijing 100089,China)

机构地区：[1]长江地球物理探测(武汉)有限公司,湖北武汉430014 [2]中地华北(北京)工程技术研究院有限公司,北京100089

出　　处：《人民长江》2022年第2期77-81,共5页Yangtze River

摘　　要：城市地下空间利用日益呈现出深层化特点,开展城市环境下深层化探测技术研究对于保障城市地下空间开发和利用具有重要意义。在对被动源面波法基本原理介绍的基础上,分析了现有二维观测系统在城市地下空间深层化探测方面存在的不足,提出了一种长排列线性台站被动源面波观测系统。该观测系统具有探测深度大、布置灵活、工作效率高等特点。偏线噪声源水平分析及对比试验结果表明:城市环境下线性台阵被动源面波观测系统受偏线噪声源影响较小,能够有效地获取地下介质横波速度结构。工程应用结果表明:线性台阵被动源面波法在土石界面划分、隐伏地质构造探测方面具有较好的应用效果,在城市地下空间探测,尤其是深层化线性工程地下空间探测方面具有较好的应用前景。The utilization of urban underground space is becoming deeper and deeper.Research on deep detection technology in urban environment is of great significance to the development and utilization of urban underground space.Based on the introduction of the basic principle of passive source surface wave method,we analyzed the shortcomings of the existing two-dimensional observation system in the deep detection of urban underground space,and proposed a long-range linear passive source surface wave observation system that had the characteristics of large detection depth,flexible layout and high work efficiency.The horizontal analysis of noise source deviating from measuring line and comparative test results showed that the linear array passive source surface wave observation system in urban environment was less affected by linear noise source,and can effectively obtain the shear wave velocity structure of underground medium.The engineering application results showed that the linear array passive source surface wave method had good application effect in soil-rock interface division and concealed geological structure detection,and had good application prospect in urban underground space detection,especially in deep linear engineering underground space exploration.

关 键 词：被动源面波法 线性台阵 城市地下空间 噪声源分析 隐伏地质构造探测 

分 类 号：P315.9[天文地球—地震学]