煤矿安全2024，Vol.55Issue(5)：188-194,7.DOI:10.13347/j.cnki.mkaq.20231896
基于瞬变电磁法的煤层风氧化带探查
Exploring coal seam wind oxidation zone based on transient electromagnetic method
摘要
Abstract
The development of coal seam wind oxidation zone has a huge impact on the production organization and safe mining of coal mines.This paper focuses on the technical difficulties in delineating the coal seam wind oxidation zone in the eastern uplift zone of Junggar Coalfield,and studies the feasibility of using transient electromagnetic method to explore the coal seam wind oxidation zone.Firstly,the electrical resistivity logging curves of normal strata and coal seam wind oxidation areas in the research area were analyzed,and the differences in electrical properties between normal areas and coal seam wind oxidation areas were summarized.A geoelectric model of coal seam wind oxidation areas was constructed based on the electrical resistivity logging curves;then,MAX-WELL software was used to numerically simulate the transient electromagnetic response of the theoretical model.It was found that the resistivity cross-section of the transient electromagnetic inversion in the coal seam wind oxidation zone exhibited abnormal char-acteristics of shallow low resistance layer thickening and reduced low resistance anomaly amplitude,which can be used to delineate the distribution range of the coal seam wind oxidation zone;finally,based on numerical simulation,on-site experiments were con-ducted in the Chuancao Gedan Coal Mine.Combined with drilling conditions,the experimental data were analyzed from the per-spectives of transient electromagnetic inversion resistivity cross-section and plane.The results showed that the transient electromag-netic method is feasible for detecting and dividing wind oxidation zones.关键词
瞬变电磁法/煤层风氧化带/电阻率断面/准格尔煤田/顶板水害Key words
transient electromagnetic method/coal seam wind oxidation zone/resistivity cross-section/Junggar Coalfield/roof wa-ter disaster分类
天文与地球科学引用本文复制引用
吴璋,张开,李雄伟,姚伟华,张振振,刘修刚..基于瞬变电磁法的煤层风氧化带探查[J].煤矿安全,2024,55(5):188-194,7.基金项目
国家自然科学基金面上资助项目(42374176) （42374176）
