理论和实验研究煤矿岩石中的热电合机制
Xiaokun Zhao1, Jun Ge2, An Zhang3
1School of Coal Engineering, Shanxi Datong University, Datong, 037000, China.
Scientific reports
|December 1, 2025
概括
温度对含有煤的岩石有很大的影响.
科学领域:
- 地质物理学 地质物理学
- 岩石物理 岩石物理
- 材料科学 材料科学 材料科学
背景情况:
- 了解含煤岩的电特性对于地质勘探和采矿安全至关重要.
- 温度变化会改变岩石的特性,影响地质物理测量和结构完整性.
研究的目的:
- 为了研究含有煤的周围岩石的温度依赖的电行为 (电阻和介电性质).
- 通过多物理模型和实验数据阐明控制这些变化的基本机制.
主要方法:
- 开发一个多物理合模型.
- 对电阻和介电性质随温度变化的系统分析.
- 实验数据的整合用于验证.
主要成果:
- 电阻表现出一个三阶段的转变:最初的增加 (微裂,水蒸发),急剧下降 (载体热激活),并进一步下降.
- 介电性质在一个值以上显著增强,放松峰值表明界面和离子极化.
- 观察到频率分散,在更高的频率中抑制极化.
结论:
- 温度是控制岩石载体移动性和极化的一个关键因素.
- 这些发现支持在深度资源勘探中进行温度校正,并监测矿山中的热损害.
- 为评估高温条件下的岩石稳定性提供了洞察力.
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