摘要
煤层顶板的砂层富水区和黏土隔水层分布规律的研究,对缩小防水煤柱、提高开采上限等有着至关重要的影响。探明直接覆盖在煤系地层之上的第四系底部砂层和黏土层的分布,可以有效地指导煤矿的防治水工作。瞬变电磁法近年广泛应用于煤矿富水区的探查,与其他方法相比,它具有低阻地质体反映灵敏,纵横向分辨率高,勘探深度大等优势。本文结合在山东某矿瞬变电磁勘探的工作,证明应用瞬变电磁法探测第四系底部砂层和黏土层的分布效果良好。
The study of rich water area of sand layers of coal bed roof and clay water-resisting layer distribution has an important effect on reducing waterproof coal pillar and raising upper limit of mining.The distribution of proving the fourth bottom sand layers and clay layer on the coal measuring strata can effectively guide the water proofing in coal mines.TEM is extensively applied to the probe of the rich area of coal.Compared with other methods,it has the advantages of reflective sense of geological bodies of the low resistivity,vertical and horizontal high resolution,great exploration depth and so on.This paper,combining with the work of TEM in a mine of Shangdon,proves that the application of TEM to detecting the sand and clay layer of the quaternary bottom has a good effect.
出处
《工程地球物理学报》
2011年第6期739-743,共5页
Chinese Journal of Engineering Geophysics
关键词
瞬变电磁法
砂层
黏土层
低阻地质体
TEM
sand layers
clay layer
geological bodies of the low resistivity
