一个考虑应力对不连续压缩下气体吸附的动态影响的透性模型
Yang Yang1,2, Changbao Jiang3,4, Diandong Hou5
1Jiangxi Province Key Laboratory of Safe and Efficient Mining of Rare Metal Resources, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
Scientific reports
|October 21, 2024
概括
这项研究调查了压力变化如何影响煤炭的结构和气体流量. 一个新的模型预测了在动态应力条件下含有气体的煤炭的透性变化.
科学领域:
- 地质技术工程 地质技术工程
- 采矿工程 采矿工程 采矿工程
- 石油工程是石油工程中的一个.
背景情况:
- 煤矿开采的进步增加了煤层的压力,改变了它们的结构和透性.
- 采矿面前的垂直应力变化是渐进的,而不是短暂的.
研究的目的:
- 分析不连续加载轴应力对煤炭变形,内部结构和漏性能的影响.
- 为含有气体的煤炭开发一种新的透性模型,以考虑动态吸附状态.
主要方法:
- 在不连续加载轴应力下对含气煤样本进行透试验.
- 在测试期间测量和记录应力,变形和透性.
- 开发了一种新的透性模型,其中包含了依赖应力气体吸附和克林肯伯格效应,基于Shi-Durucan模型.
主要成果:
- 不连续加载的轴应力显著影响煤炭变形,内部结构和漏特性.
- 观察到的透性变化与煤炭内部结构和气体行为的压力诱导变化有关.
- 开发的模型成功地整合了动态吸附状态,以预测煤炭的透性.
结论:
- 了解压力导致的煤炭变化对于预测气体流量和管理采矿操作至关重要.
- 新的透性模型在动态应力条件下更准确地表示了煤炭中的气体流量.
- 这项研究通过改善透性预测,有助于实现更安全,更有效的煤炭开采实践.
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