在非支柱式煤矿的二次采矿中,柔性成型混凝土墙的不稳定性的预测模型
Yanhui Zhu1, Ye Tian2, Peilin Gong3
1College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
Scientific reports
|September 17, 2024
概括
二次采矿会损害柔性成型混凝土墙壁,影响采煤安全. 预测应激模型和强化对于管理这种损害和确保运营完整性至关重要.
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
- 材料科学 材料科学 材料科学
背景情况:
- 非支柱式煤炭开采导致了二次采矿活动.
- 这些运动会对柔性板混凝土墙壁造成重大损坏.
- 路面屋顶和底板变形会对工作面的效率和安全产生负面影响.
研究的目的:
- 调查应力迁移法和柔性成型混凝土墙壁的不稳定机制.
- 分析二次采矿对非柱状侧支结构中这些墙壁的影响.
- 为提高采矿安全和效率提供见解.
主要方法:
- 在州煤矿和州煤矿进行现场调查.
- 数字模拟和理论分析.
- 实验测试和压力分析.
主要成果:
- 柔性成型混凝土墙壁在采矿过程中经历压力度,可能导致损坏.
- 预测应力模型是必不可少的;如果应力超过压力强度,则需要加强.
- 墙壁的损伤超标显示了两阶段的生长模式,最终稳定.
结论:
- 了解应力迁移是防止柔性板混凝土墙壁损坏的关键.
- 预测建模和及时加强对于采矿安全至关重要.
- 使用Z6混凝土增强剂有效地提高了墙壁的强度.
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