物探与化探2018，Vol.42Issue(2)：422-428,7.DOI:10.11720/wtyht.2018.2.29
徐州地区全新世古河道地电特征研究
Research on geoelectric characteristics of Holocene ancient channels in Xuzhou area
摘要
Abstract
Investigation of ancient channels is of great significance for earthquake disaster reduction,urban planning and reasonable de-velopment of ground water resources. Based on the significant electrical property difference of rock and soil in Xuzhou area, Holocene ancient channel was detected using high density resistivity method. Firstly, through numerical simulation of geoelectrical models and field test nearby boreholes, the effectiveness of high density resistivity method in detecting Holocene ancient channel and the device choice were discussed;Secondly,the result maps of section,plane and 3D were analyzed;Finally,the detecting result of high density resistivity method was verified by boreholes. Result of theoretical research and applied case indicates that Holocene ancient channels in Xuzhou area show representative electrical field response characteristics, information such as morphology and stratum structure of ancient channels can be obtained through the analysis of response characteristic; the dipole-dipole device of high density resistivity method is very sensitive to the structure variation of overburden,maximum anomalous intension,and it has certain advantages in the as-pect of stratum division,so dipole-dipole device is the preferred device for the investigation of ancient channels;through arranging mul-tiple survey lines in investigated area and with the help of 3D visual software platform,3D spatial interpretation of target can be real-ized,and interpreted results will intuitively reveal the 3D morphology and spatial distribution characteristics of Holocene ancient chan-nels.关键词
古河道/地电模型/数值模拟/三维可视化Key words
ancient channel/geoelectrical model/numerical simulation/3D visualization分类
天文与地球科学引用本文复制引用
姜国庆,黄敬军,张大莲,徐士银,卢进添..徐州地区全新世古河道地电特征研究[J].物探与化探,2018,42(2):422-428,7.基金项目
中国地质调查局地勘项目(12120114022001,12120115043201) （12120114022001,12120115043201）
江苏省地勘基金项目 （）
