灵东煤矿南翼Ⅱ_(2-1)、Ⅱ_3煤层顶板含水层的分布

Distribution of aquifer in roof of Ⅱ_(2-1) and Ⅱ_3 coal seams in south wing of Lingdong Coal Mine

为探明灵东煤矿南翼Ⅱ_(2-1)、Ⅱ_3煤层顶板含水层的赋存情况,依据区域地质、井田地层、煤层发育、地层电性特征等地质-地球物理资料,实施瞬变电磁法的预实验以确定合理的测量参数。结合钻孔资料,分析了电磁信号的纵向响应特征,获得了数据处理所需参数。结果表明:依据瞬变电磁法数据处理结果,可推断出Ⅱ_(2-1)、Ⅱ_3煤层顶板含水层的赋存位置,并圈定Ⅱ_(2-1)、Ⅱ_3煤层顶板上部富水区分别有5和2处。该研究可为目标区煤炭资源的合理开发提供参考。

This paper is to determine the occurrence of aquifers in the Ⅱ2-1 and Ⅱ3 coal seams in the south wing of Lingdong Coal Mine.The study building on geological-geophysical data such as regional geology,well field stratums,coal seam development,and stratigraphic electrical characteristics consists of determining reasonable measurement parameters by performing pre-experiments of the TEM;and analyzing the longitudinal response characteristics of the electromagnetic signals,combined with drilling data,and obtaining data processing parameters.The data processing results based on transient electromagnetic method could allow for inferring the occurrence locations of the aquifers in the Ⅱ2-1 and Ⅱ3 coal seams,and defining the location of 5 and 2 water-rich areas on the top of the Ⅱ2-1 and Ⅱ3 coal seam roofs respectively.This paper could provide a reference for the rational development of coal resources in the target area.