物探化探计算技术2025，Vol.47Issue(5)：670-679,10.DOI:10.12474/wthtjs.20240620-0003
时域激电法探测地下渗漏石油效果分析
Effect analysis of the time domain IP method in detecting oil pollution underground
摘要
Abstract
Oil leakage to the ground will cause changes in the resistivity and polarizability of the underground medium so that it can be detected by the time domain IP method(TDIP).Modelling,calculation,and physical tests are carried out to analyze the detection effect.Results show that the apparent resistivity varies nonlinearly and monotonically with the target resistivity.When the resistivity of the target body is less than 1/20 of the background soil or more than 20 times the background soil,the relative difference in apparent resistivity will reach saturation.The apparent IP parameters(apparent polarizability,apparent IP resistivity,apparent IP conductivity)change linearly with the target's polarizability,the high polarization anomaly is larger than the low polarization anomaly.The apparent resistivity and apparent polarizability can reflect the conductive and highly polarized target at the same time,and the apparent IP conductivity combines the two anomalies to highlight the anomaly of the target.The resistive and low polarization body can only be reflected by the apparent resistivity,as the apparent polarizability anomaly is much smaller.The detection ability of this method is discussed with the relative anomaly value of 20%as the threshold.For a low resistance and high polarization target,when the resistivity ratio is 0.1 and the polarizability ratio is 10,the maximum detection depth can reach 3 times the target radius.For a high resistance and low polarization target,when the resistivity ratio is 10 and the polarizability ratio is 0.1,the maximum detectable depth reaches 1.5 times the radius of the target.关键词
时域激电法/石油污染/模型计算/视参数/相对异常Key words
time domain IP method/oil pollution/model calculation/apparent parameter/relative anomaly分类
天文与地球科学引用本文复制引用
董立超,席振铢,龙霞,王鹤..时域激电法探测地下渗漏石油效果分析[J].物探化探计算技术,2025,47(5):670-679,10.基金项目
国家重点研发计划课题(2022YFC2903404) （2022YFC2903404）
企业产学研合作技术攻关项目(2023CBKJ12) （2023CBKJ12）
