在浅浅的中利用破碎岩石来减轻采矿引起的水冲击灾害风险和环境损害:实验研究和透性模型
Kaijun Miao1, Shihao Tu1, Yuyao Wang1
1School of Mines, China University of Mining and Technology, Xuzhou 221116, China; State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
The Science of the total environment
|September 6, 2023
概括
这项研究调查了煤炭开采对地下水的影响. 了解破碎岩石的压缩和漏是平衡水的关键,防止冲进和保护浅层煤层资源的保护.
科学领域:
- 地质技术工程 地质技术工程
- 水文地质学 水文地质学
- 采矿工程 采矿工程 采矿工程
背景情况:
- 煤炭开采可能导致地下水流失,水涌入灾害和生态破坏.
- 浅层煤层采矿在管理地下水和防止表面退化方面带来了挑战.
- 的特点影响水资源管理和生态保护战略.
研究的目的:
- 在浅层煤层采矿中实验性地确定破碎岩石的压缩和透特性.
- 建立一个模型来预测在轴应力下破碎岩石的行为.
- 在重新开采过程中确定生态保护和液压连接的关键层.
主要方法:
- 透性测试是在不同轴应力下对破碎岩石样本进行的.
- 福克海默理论被应用到岩石凝结过程中的水透模型.
- 在水和岩石样本上进行了单轴压缩强度测试.
- 一个轴向应力百分比的空隙-通透性模型被开发出来.
主要成果:
- 破碎岩石中的空隙百分比随着轴应力增加而呈指数级下降.
- 透度从10−1到10 D不等,在压缩过程中遵循福克海默定律.
- 在测试的石材中,泥石表现出最低的初始透性和还原范围.
- 水和使煤炭的单轴压缩强度降低了5.8%,砂岩降低了3.2%.
结论:
- 已建立的模型准确地预测了断层岩石的行为,有助于水资源管理.
- 在重新开采过程中,泥石屋顶层对生态保护和液压连接至关重要.
- 研究结果支持在采矿业务中平衡水资源保护和防冲防止.
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