摘要
微动探测技术作为一种新型的地球物理勘探方法,已成为工程地质勘察及隐伏地质构造探测的重要手段。基于微动探测空间自相关(spatial autocorrelation,SPAC)法基本原理,选取研究区内121个微动测点及6个地质钻孔,比对单点S波速度结构与钻孔岩性结构,结果显示岩性界面探测精度在0.44%~5.54%,表明微动探测法划分岩性差异较大的地层界面是可靠的;结合二维视横波速度剖面识别出区内地层单元及隐伏地质构造,取得了较好的地质效果,为海口江东新区新近纪-第四纪地层单元划分提供数据支撑。
As a new geophysical exploration method,microtremor detection technology become an important technology for engineering geological investigation and survey of the buried fault structure.Based on the principle of spatial autocorrelation(SPAC)method,the single point S-wave velocity structure and the lithologic structure of the boreholes were compared by selecting 121 data and 6 geological boreholes in study area.The results show that the detection accuracy of lithologic interface is between 0.44%and 5.54%,which indicates that the microtremor detection technology is reliable in dividing the stratigraphic interface with large differences of lithologic.In combination with the 2D apparent S-wave velocity structure,the stratum units and buried fault in the study area are identified,and achieving better geological effects,proving data support for division of Neogene-Quaternary stratigraphic units in Jiangdong New District of Haikou.
作者
钟宙灿
蔡水库
刘巧霞
张前
章雪松
张匡华
王富
ZHONG Zhou-can;CAI Shui-ku;LIU Qiao-xia;ZHANG Qian;ZHANG Xue-song;ZHANG Kuang-hua;WANG Fu(Key Laboratory of Marine Geological Resources and Environment of Hainan Province,Haikou 570206,China;Comprehensive Institute of Geological Investigation of Hainan Province,Haikou 570206,China;Institute of Geological Survey of Hainan Province,Haikou 570206,China;Geophysical Exploration Center of China Earthquake Administration,Zhengzhou 450002,China;Marine of Geological Survey of Hainan Province,Haikou 570206,China)
出处
《科学技术与工程》
北大核心
2023年第36期15393-15403,共11页
Science Technology and Engineering
基金
海南省海洋地质资源与环境重点实验室自主课题(22-HNHYDZZYHJKF023,HNHYDZZYHJZZ003)。
关键词
SPAC法
海口江东新区
新近纪-第四纪
S波速度结构
SPAC method
Jiangdong New District of Haikou
Neogene-Quaternary
S-wave velocity structure
