在高压矿井工作面中控制横跨倒塌柱的路径的技术研究
Hai Rong1, Longyue He2, Nannan Li1
1College of Mining, Liaoning Technical University, Fuxin, 123000, China.
Scientific reports
|August 29, 2025
概括
这项研究开发了一种复合支系统,以稳定穿过倒塌柱的矿道. 该系统有效地减少了岩石的不稳定性,并确保了在高采矿压力下结构完整性.
科学领域:
- 采矿工程
- 地质工程
- 岩石机械
背景情况:
- 在高压采矿环境中,崩柱的道路穿越导致复杂的压力再分配,导致周围岩石的不稳定性和支故障.
- 了解崩柱区的机械行为对于设计有效的支系统至关重要.
研究的目的:
- 在道路交叉路口调查崩柱区的机械行为.
- 开发和验证塌柱区域道路的优化复合支系统.
主要方法:
- 综合方法结合了理论分析 (弹性力学),数值建模 (Midas GTS NX,FLAC3D) 和现场验证.
- 在崩柱结构中的应力分布的描述.
- 设计和模拟一个"浅孔喷射+螺栓-电缆-网+π-钢棚"复合支系统.
主要成果:
- 在崩柱中确定了不同的应力区域,包括低应力核心,减压和应力度区域.
- 理论计算预测塑料故障范围为50.01米.
- 拟议的复合支系统减少了18%的塑料区域,降低了6.6%的屋顶沉降,并将侧墙变形限制在200mm以下.
- 现场监测证实了该系统的有效性,保持了屋顶位移在150毫米范围内.
结论:
- 开发的复合支系统有效地稳定了矿山道路在高采矿压力下穿过倒塌柱.
- 该研究提供了在具有挑战性的地质条件下道路支持设计的定量指导方针.
- 优化浅孔喷射和坚固的复合材料支结构对于确保道路稳定性至关重要.
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