物探与化探2024，Vol.48Issue(4)：1037-1044,8.DOI:10.11720/wtyht.2024.1344
滨海城市地质结构电阻率法三维模拟与应用
3D simulations of geological structures in coastal cities using a electrical resistivity method
摘要
Abstract
For the underground construction of coastal cities in China,there is an urgent need to accurately position unfavorable geo-bodies such as faults and boulders.Based on the geological characteristics of coastal cities,this study conducted 3D numerical simula-tions using a high-density resistivity method,determining the effects of the electrical properties and thickness of the overburden on the survey results,as well as the DC electric field characteristics varying with the sizes and burial depths of detection targets.The results show that the resistivity difference between the overburden and the targets serves as a critical factor in determining the influence of the overburden.For low-resistivity fracture zones,a higher resistivity of the overburden signifies more prominent responses from the fracture zone.Under middle-to high-resistivity overburden conditions,shallowly buried boulders can be easily found,and larger boulders ex-hibit more significant high-resistivity characteristics.In the exploration along the Qingdao metro line 5,the high-density resistivity method played a vital role in exploring fracture zones and boulders,verifying the effective application effects of the method.The results of this study provide a basis for selecting engineering exploration methods and determining operating parameters in coastal cities.关键词
高密度电阻率法/数值模拟/有限差分法/孤石/断层Key words
high-density resistivity method/numerical simulation/finite-difference method/boulder/fault分类
天文与地球科学引用本文复制引用
刘洪华,张卉,王汝杰,于鹏,秦升强,李文宇,车荣祺..滨海城市地质结构电阻率法三维模拟与应用[J].物探与化探,2024,48(4):1037-1044,8.基金项目
山东省地矿局科技攻关项目(KY202223) （KY202223）
自然资源要素耦合过程与效应重点实验室开放课题(2024KFKT017) （2024KFKT017）
