在长壁面板密封过程中,对自燃和气体爆炸的管理进行通风安排评估和主动的goaf惰性化
Ming Qiao1, Ting Ren2,3, Jon Roberts4
1School of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia. mqiao@uow.edu.au.
Environmental science and pollution research international
|October 25, 2023
概括
在煤矿面板密封过程中最大限度地降低风险,包括注射和密封通道. 这种主动的GOAF惰性化策略可以减少自燃和爆炸的危险.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 计算流体动力学的流体动力学.
- 地质技术工程 地质技术工程
背景情况:
- 长墙采矿面板密封是一个关键的过程.
- 在密封过程中出现自燃和气体爆炸的重大风险,这是由于GOAF大气的变化造成的.
- 了解气体流动动力学对于减轻危险至关重要.
研究的目的:
- 为了研究长壁面板密封期间的气体流动力学.
- 评估通风装置,以尽量减少危险.
- 开发有效的积极主动的高惰化策略.
主要方法:
- 三维计算模型的开发和校准.
- 基于澳大利亚采矿条件的六阶段面板密封过程的模拟.
- 校准与现场气体监测数据.
主要成果:
- 确定了最佳的注射策略:在行车路边的0.75 m3/s,在面部后面的120m.
- 后方行车路的有效密封是至关重要的.
- 模拟预测氧气水平低于5%的建议策略.
结论:
- 积极的goaf惰性化,包括注射和适当的密封,最大限度地减少自发加热和爆炸风险.
- 有效的通风装置和气体监测对于安全的面板密封至关重要.
- 这项研究为减少采矿危害造成的环境污染提供了至关重要的知识.
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