陕西煤炭2024，Vol.43Issue(8)：34-38,5.DOI:10.20120/j.cnki.issn.1671-749x.2024.0807
基于测井约束反演的基岩风化带含水层富水性分析
Water-rich analysis of aquifer in the weathering zone of bedrock based on logging constraint inversion
摘要
Abstract
Inversion is an important means for the interpretation of transient electromagnetic information.Due to the inade-quate high-low frequency information,there exists the shortages of poor lateral continuity,low longitudinal resolution and poor control capability for data,thus having a poor scaling capability for the space of strata.In order to improve the inversion accuracy,a constrained geologic model is built based on the Occam algorithm and logging curve.With the detailed inversion of logging information and taking a certain coal mine in northern Shaanxi as the research object,the traditional smooth model is compared with the constrained geological model.The research results show that the two models have a high degree of fit-ting with the measured data,but the smooth model is easily affected by the transition point of the curve tail,thus loss of true geological information.The logging constraint model can make full use of the electrical characteristics of each stratum in the area to reduce sudden changes and strengthen horizontal continuity,the longitudinal resolution is also improved to a certain extent,and the inversion results are consistent with the actual conditions,which can be adopted as a commonly used inver-sion means for boosting the information interpreting accuracy.关键词
瞬变电磁/约束反演/Occam算法/测井曲线约束/基岩风化带Key words
transient electromagnetic/constraint inversion/Occam algorithm/logging curve constraint/bedrock weathering zone分类
天文与地球科学引用本文复制引用
易万亿,杜林..基于测井约束反演的基岩风化带含水层富水性分析[J].陕西煤炭,2024,43(8):34-38,5.基金项目
陕西投资集团有限公司科技研发项目"地面电法勘探在离层水防治中的应用研究"(2021-01-07)资助 （2021-01-07）
