机理和控制措施的地板起重在部侧入弱软岩石的进入
Fenghai Yu1,2, Jin Yang1,2, Kai Zhou3,4
1Shandong Key Laboratory of Intelligent Prevention and Control of Dynamic Disaster in Deep Mines, Qingdao, 266590, Shandong, China.
Scientific reports
|September 29, 2025
概括
软岩入口的地板升起是由于不对称的应力和水的软化引起的. 一种新的"地板角螺栓堆"技术有效控制了这一问题,降低了超过74%的起重.
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
- 岩石机械学 岩石机械学
背景情况:
- 软岩石的软岩石侧进口具有较低的岩石强度,容易受到水引起的软化.
- 挖掘和采矿干扰导致地板大幅升高,阻碍安全和高效的开采.
- 了解地板提升机制和控制对于生产连续性至关重要.
研究的目的:
- 为了研究软化水的行为和地板提升进化在软岩软硬化软岩的goaf-side条目.
- 建立地板升降的机械模型并揭示其造成灾难的机制.
- 提出和验证有效的控制措施,对地板提升.
主要方法:
- 综合实验室测试,理论分析,现场监测和数值模拟 (3DEC软件) 的全面研究.
- 系统地研究软岩的软水软化特性.
- 开发和模拟"地板角螺栓堆"技术用于起重控制.
主要成果:
- 软岩石的软凝固性较弱,凝聚力较低,内部摩擦角较小,水浸浸后压力强度降低.
- 在挖掘过程中,地板悬浮在固体煤侧附近更为明显,并在提取过程中向支柱侧移动.
- 在入口中的不对称应力分布被确定为不对称地板升起的主要原因.
结论:
- "地板角螺栓堆"技术显著降低了地板起重,现场测试显示与不支持条件相比降低了74.3%.
- 合并地板螺栓加固和接是一种有效的策略,可以在这些充满挑战的环境中减轻地板升起.
- 这项研究提供了对地板提升机制的关键见解,以及对软岩采矿的实用解决方案.
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