武汉矿区第9号煤层的气体控制车道的设计,基于层布局优化
Chun Zhang1,2, Xianju Qian3,4
1College of Safety Science and Engineering, Liaoning Technical University, Fuxin, 123000, Liaoning, China.
Scientific reports
|October 27, 2024
概括
这项研究优化了9号煤层中气体控制车道的位置,以控制高气体水平. 最好的配置显著降低了气体度,确保了更安全的采矿操作.
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
- 环境工程 环境工程
背景情况:
- 武汉矿区第9号煤层工作面上角的气体超限问题存在安全风险.
- 有效的气体控制对于安全高效的煤炭开采工作至关重要.
研究的目的:
- 为了确定9号煤层的气体控制车道的最佳配置和位置.
- 为了减轻工作面上的气体超限问题.
主要方法:
- 使用"O"圆理论和经验公式进行理论分析,以确定岩层高度范围 (沉和裂区域).
- 数字模拟用于分析不同气体控制车道位置下的气体度场.
- 现场实施和验证优化的气体控制车道设计.
主要成果:
- 覆盖的岩层高度为6.8611.26米,裂区域高度为30.1141.31米.
- 最佳的气体控制车道位置 (从返回气道20米,从煤层顶部20米) 导致气体度低 (0.35%在上角,0.26%在返回气道).
- 实现了高气体提取度 (23.7%) 和纯体积 (38.3 m3/min).
结论:
- 优化的气体控制车道配置有效地管理了 9# 煤层工作面上的气体超限问题.
- 数字模拟为现场实施提供了准确的预测.
- 该研究表明,在地下煤矿开采中,气体管理的方法取得了成功.
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