典型开采条件下煤与瓦斯共采实践与思考

Practice and thinking on simultaneous exploitation of coal and gas under typical mining conditions

针对我国煤层瓦斯高应力、高瓦斯压力、高瓦斯含量及低渗透性赋存特点,从煤层瓦斯抽采基础理论、技术方法及环境与安全效益等方面,系统分析总结了我国煤与瓦斯共采理论与技术进展,介绍了松软低透煤层群、高瓦斯原生结构煤层、山区松软低渗突出煤3种典型开采条件下煤与瓦斯共采技术体系与应用实践,进一步指出了我国煤与瓦斯共采面临的问题与挑战,认为我国应坚持煤与瓦斯共采的科学开采方法,从基础理论研究、关键技术及装备研发及示范工程建设方面提高煤与瓦斯精准共采技术整体水平,实现不同开采条件下煤层瓦斯资源的有效开发利用。

Considering the high stress,high gas pressure,high gas content and low permeability of coalseam gas in China,the authors made a brief review about the status and latest progress on the fundamental theory,technique and application on the simultaneous exploitation of coal and gas.Taking soft and low permeable coal seam group,high gas original structure coal seam and soft and low permeability outburst coal in mountain area as an example,the authors introduced the technology system and application of simultaneous exploitation of coal and gas in 3 typical mining conditions.Furthermore the problems and challenges facing on simultaneous exploitation of coal and gas were discussed.In order to improve the effective exploitation and utilization of coal seam gas resources under different mining conditions,we should insist on the scientific mining method of simultaneous exploitation of coal and gas,and improve the overall level of simultaneous exploitation of coal and gas technology from basic theoretical research,key technology and equipment research and development and demonstration project construction.