优化了埃塞俄比亚托莱煤矿开采坡道的设计和稳定性,埃塞俄比亚
Eyerusalem Alemayehu1, Endalu Tadele Chala2,3, Nagessa Zerihun Jilo4
1Department of Geology, College of Applied and Natural Sciences, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia.
Scientific reports
|January 10, 2025
概括
埃塞俄比亚Tolay煤矿的斜坡稳定性很差,低的安全因子 (FOS) 值表明不稳定. 优化斜率几何形状,比如减少角度,显著提高了稳定性和矿山安全性.
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
- 地球科学 地球科学 地球科学
背景情况:
- 开放式煤矿开采需要强大的坡度稳定性管理,以确保运营安全.
- 地质构造,包括玄武岩,泥石和侵蚀土壤,在采矿环境中显著影响斜坡行为.
- 埃塞俄比亚的托莱露天煤矿由于其复杂的地质条件而面临挑战.
研究的目的:
- 为了评估托莱露天煤矿的坡度稳定性.
- 为了确定影响斜坡行为的关键地质因素.
- 推优化策略,以提高矿山安全和运营效率.
主要方法:
- 进行了地质绘图和不连续性分析.
- 施密特子测试评估了单轴压力强度 (UCS),实验室测试分析了土壤特性.
- 使用极限平衡方法 (LEM) 和有限元素方法 (FEM) 软件 (幻灯片和阶段2) 评估了斜率稳定性.
主要成果:
- 地质调查确定了泥石,泥石和粘土石层,具有显著的煤层.
- 大多数斜坡板表现出不稳定性,安全系数 (FOS) 值在0.220到0.430.
- 将斜率角度从70°降低到26°,FOS从0.322提高到1.373,显示出增强的稳定性.
结论:
- 这项研究强调了托莱矿山斜坡的广泛不稳定性,需要加强.
- 优化斜坡几何形状,特别是降低斜坡角度和调整工作台高度,对于提高矿山安全至关重要.
- 有效的斜坡稳定性管理对于确保安全和高效的煤炭开采操作至关重要.
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