於昌峰

• 1:江苏煤炭地质勘探三队

摘要(Abstract)：

以华北某煤矿为例,分析了含水层地下水和老空水水化学特征,建立了单一充水水源识别的综合逐步模型,提出了老空水来源模式并采用Piper图和综合逐步模型进行了验证。研究结果显示,老空水多个水化学指标含量与含水层地下水差异明显,尤其是TDS、SO_4~(2-)和Na~+含量明显偏高。长石、方解石、绿泥石等中的硅酸盐矿物和碳酸盐矿物溶解是老空水中Na~++K~+、Ca~(2+)、Mg~(2+)和HCO_3~-增加的主要原因,黄铁矿氧化和硫酸盐溶解是SO_4~(2-)增加的主要原因。采用特征离子对比法结合Bayes识别方法建立了单一水源识别的综合逐步模型。矿区老空水主要来源于二叠系砂岩水和侏罗系红层水,Piper图显示老空水与砂岩水和红层水分布范围高度重叠,验证了老空水来源模式。

关键词(KeyWords)： 多含水层矿井;水化学特征;水源识别;综合逐步模型;水-岩作用

Abstract:

Keywords:

基金项目(Foundation): 江苏煤炭地质勘探三队科研项目“地面顺煤层水平井成孔及下套管技术与工艺研究”

作者(Author): 於昌峰

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