在采矿过程中,卡伊达姆盆地的马海盐湖地下盐水的动态特征和演变规律
Zhihan Kong1, Guangcai Wang1, Qingyu Li1
1School of Environmental Science and Engineering, Qingdao University, Qingdao, 266100, Shandong, China.
Scientific reports
|May 11, 2024
概括
在盐湖中取盐的淡水注入改变了地下盐水的化学成分和多孔性. (Ca2+) 度显著下降,而多孔性最初增加,然后下降,影响盐水资源管理.
科学领域:
- 地质化学 地质化学
- 水文地质学 水文地质学
- 盐湖资源 盐湖资源
背景情况:
- 在盐湖中的地下盐水开采通常使用淡水注射来提取盐.
- 这种方法破坏了天然的水岩平衡,改变了盐水的演变.
- 了解这些变化对于可持续的资源管理至关重要.
研究的目的:
- 在淡水溶解下探索盐分释放在含盐水媒介中的机制.
- 分析淡水注入对马海盐湖盐水化学和多孔性的影响.
- 为了研究不同开发阶段地下盐水的进化规律.
主要方法:
- 来自168个采样点的化学参数分析,分为三个利用阶段.
- 应用相关性分析和离子比率分析.
- 探究孔径变化和盐水演化规律.
主要成果:
- 主要离子含量和盐水矿化在开采过程中出现了微小的变化.
- 由于矿物质溶解,混合和离子交换, (Ca2+) 含量显著降低 (41.7%的中期,24.5%的晚期).
- 地质孔隙性最初增加,然后减少,显示与Ca2+度的反向关系.
结论:
- 淡水注入显著影响湖盐水系统中的Ca2+度和多孔性.
- 这项研究揭示了人工溶解采矿引起的层层扰乱的机制.
- 提供了盐水资源储备计算和盐湖地区可持续发展的理论基础.
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