关于在超厚的煤层中挖掘洞穴过程中关键层破裂和表面沉降之间的联系机制的研究
Tianwei Lan1,2, Zhijia Zhang3, Weiqiang Guo4
1School of Mining Engineering, Liaoning Technical University, Fuxin, 123000, Liaoning, China.
Scientific reports
|January 17, 2025
概括
在超厚的煤层中挖掘煤矿导致了显著的表面沉降和动态灾害. 这项研究揭示了超负荷骨折,微地震性和沉降之间的时间变化的联系,有助于预防灾害.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 地质技术工程 地质技术工程
- 岩石机械学 岩石机械学
背景情况:
- 在超厚的煤层中挖掘矿业会导致大量的过载运动,导致表面沉降和动态矿山灾难.
- 了解超负荷断裂,微地震性和表面沉降之间的关系对于矿山安全至关重要.
研究的目的:
- 为了研究表面沉降,微地震特征和在超厚煤层洞穴采矿中关键层次裂变尺度之间的时间变化的联系机制.
- 建立一个预测和评估超负荷运动和断裂过程的系统.
主要方法:
- 应用蒂莫申科的理论,提出轴承断裂模式,并为超负荷关键层建立断裂标准.
- 理论计算和微地震数据验证断裂模式和步骤距离.
- 数字模拟和表面监测用于分析表面沉降因子.
- 将断裂循环划分为四个子过程,以便进行详细分析.
主要成果:
- 较高的关键层更容易发生轴承故障,增加断裂步骤距离.
- 确定了超负荷运动,微地震数据和表面沉降反应之间的时间变化的联系系统.
- 证明了高位置关键层的断裂直接影响了表面沉降.
结论:
- 拟议的时间变化的链接系统为预测超负荷行为提供了更有系统,更准确的方法.
- 这些发现为防止和控制煤炭矿中岩石爆破灾害提供了新的见解.
- 有效管理超负荷断裂和沉降对于矿山安全至关重要.
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