半航空瞬变电磁数据处理与解释在贺斯格乌拉露天煤矿水灾害勘探中的应用
Application of semi-airborne transient electromagnetic data processing and interpretation in exploration of water hazards in Hesigula open-pit coal mine
翟皓 1李桐林 1康鑫泽 1吴宇豪2
作者信息
- 1. 吉林大学地球探测科学与技术学院,长春 130026
- 2. 天津市勘察设计院集团有限公司,天津 300191
- 折叠
摘要
为减少地下涌水对煤矿开采的影响,确保内蒙古自治区锡林郭勒盟贺斯格乌拉露天煤矿安全开采,笔者采用半航空瞬变电磁法对该煤矿进行地下水勘探.通过Occam反演获得地下低阻电性异常的分布情况,并与核磁和钻孔结果进行对比,得出以下主要结论:①第四纪松散岩类含水砂层相对高阻,白垩纪大磨拐河组碎屑岩类孔隙裂隙含水层及煤层表现为低电阻,完整的大磨拐河组地层表现为相对高阻;② 测区地下水渗流通道主要分布在白垩纪地层碎屑岩类孔隙裂隙水含水层中;③地下富水区域主要集中在标高840～880 m这一范围内,随着深度变深,富水区域面积逐渐变小.
Abstract
In order to reduce the impact of underground water on coal mines and ensure the safety mining of the Hesigula open-pit coal mine in Xilingol League of Inner Mongolia,the authors use the semi-airborne transient electromagnetic method to conduct groundwater exploration of coal mines.Through the Occam inverse discrimination,the distribution of underground low-resistance electrical abnormalities is obtained,and comparison with the results of the nuclear magnetic and drilling results,the following main conclusions are obtained:①The water-bearing sand layers of the Quaternary loose rocks exhibit relatively high resistance,while the porosity and fractures within the clastic rock layers and coal seams of the Cretaceous Damoguaihe Formation demonstrate low electrical resistance.Conversely,the strata of the Damoguaihe Formation display relatively high resistance as a whole.②In the study are-a,underground water seepage channels are primarily distributed within the aquifers of porosity and fractures in the clastic rock layers of the Cretaceous strata.③Underground water-rich areas are mainly concentrated in the range from 840 m to 880 m.As the depth increases,the area of the water-rich zones gradually decreases.
关键词
半航空瞬变电磁法/涌水通道/露天煤矿/地下水勘查/内蒙古Key words
semi-airborne transient electromagnetic method/water seepate channels/open-pit coal mine/groundwater exploration/Inner Mongolia引用本文复制引用
基金项目
天津市规划和自然资源局科技项目(KJ[2023]41)
出版年
2024
NETL
NSTL
万方数据