关于应用综合气体控制技术在大型采矿面部进行源隔离的三维气体提取的研究
Jun Liu1,2,3, Zheng Wang1, Qian Wang1
1School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China.
ACS omega
|August 5, 2024
概括
一个新的三维气体提取系统和管理模型有效地减少了大型煤矿中的甲风险. 这种方法将甲捕获效率提高到87.5%,确保更安全的采矿操作.
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
- 环境科学 环境科学
背景情况:
- 大型采矿面临着巨大的挑战,因为邻近的岩层和煤层的高气体喷发.
- 了解层级的不稳定性和气体爆发特征对于有效的气体管理至关重要.
研究的目的:
- 为大型采矿面开发和验证一个全面的,源隔离的三维气体提取系统和管理模型.
- 为在复杂的地质条件下优化天然气开采战略提供指导.
主要方法:
- 建立了基于层级失效和气体爆发特征的源隔离三维气体提取系统.
- 开发了大型采矿面部的综合气体管理模型.
- 使用FLAC3D数值模拟来分析覆盖层和地板断裂区域.
- 优化道路布局 (高层,倾斜,低层,地板排水) 和天然气提取技术 (普通和大直径钻井).
主要成果:
- 在15115采矿面上实现了87.5%的甲捕获效率.
- 在上角和返回空气流中保持甲度低于0.8%.
- 与普通采矿面相比,煤层钻井的甲度增加了2.9倍.
- 提供了指导道路和排水系统设计的地质数据.
结论:
- 拟议的气体管理模式有效地减轻了大型采矿面的气体相关危险.
- 综合方法显著提高了甲提取率和运营安全.
- 这种方法可以使煤炭和甲的提取和,促进可持续的采矿实践.
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