采集了卧龙湖煤矿松散层水、砂岩水和灰岩水样品进行稀土元素测试分析,结果表明,卧龙湖矿区三个含水层均呈现偏碱性水质,稀土总量偏低(∑REE =0.046 μg/L ～0.15 μg/L),经后太古代平均页岩标准化后,均表现为轻稀土亏损,重稀土富集,所有样品均表现为明显的Eu正异常(δEu =1.12～11.36),多数样品表现为Ce负异常,灰岩水表现明显的Y正异常;这些特征受到多种因素控制,其中Ce负异常主要受到地下水氧化还原环境的影响,而Eu异常除受到了测试条件影响外,长石的溶解、氧化还原条件及灰岩水中过高的Sr都有一定的影响,Y异常和灰岩水中较高的Y/Ho值分别受到Sr含量和Ca的影响.这些特征及影响因素均表明利用稀土元素特征进行矿井水源识别具有一定的可行性.
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