高密度电法在秦皇岛地区岩溶勘察工作中的应用
Application of high density electrical method in karst exploration in Qinhuangdao area
李春波 1张丽 1任磊 1于蒙 1代涛 2李福庆2
作者信息
- 1. 华北地质勘查局五一九大队,河北 保定 071051
- 2. 河北九华勘查测绘有限责任公司,河北 保定 071051
- 折叠
摘要
高密度电法是一种技术成熟、抗干扰能力强、分辨率高、成本低、施工方便的物探方法,被广泛应用于岩溶勘察工作中.为查明秦皇岛某施工场地的岩溶分布及发育情况,采用高密度电法进行岩溶探测,同时进行了钻探验证.结果表明:通过高密度电法能较好地识别地层结构、浅部低阻异常,以石灰岩高阻界面上呈现的"下凹"趋势或"凹槽"为岩溶特征共圈定出岩溶异常22处,对其中的2处异常进行了钻探验证,钻探结果与物探解译结果对应良好,可见在秦皇岛地区利用高密度电法进行岩溶勘察是有效的.本研究可为秦皇岛地区岩溶勘察提供一定的借鉴.
Abstract
High density electrical method is a geophysical prospecting method with mature technology,strong anti-interference ability,high resolution,low cost and convenient construction.It is widely used in karst explora-tion.In order to find out the distribution and development of karst in a construction site in Qinhuangdao,karst detection was carried out by high-density electrical method and drilling verification was carried out.The results show that the high-density electrical method can better identify the stratigraphic structure and shallow low-resistance anomalies.A total of 22 karst anomalies are delineated with the down-concave trend or groove on the high-resistance interface of limestone as the karst characteristics.Two of the anomalies were verified by drilling.The drilling results are in good agreement with the geophysical interpretation results.It can be seen that the high-density electrical method is effective in the karst survey in Qinhuangdao area.The research can provide some refer-ence for the karst survey in Qinhuangdao area.
关键词
高密度电法/岩溶勘察/溶洞/钻探验证/秦皇岛Key words
high density resistivity method/karst exploration/karst cave/verified by drilling/Qinghuangdao引用本文复制引用
基金项目
天津华北地质勘查局科研项目(HK2023-B37)
出版年
2024
NETL
NSTL
万方数据