摘要
如何精准测定煤矿井下煤层瓦斯含量,进一步厘清煤层瓦斯成藏特征是矿井实施瓦斯灾害治理或煤矿区煤层气资源开发利用的关键。基于前期研究及文献调研,回顾了煤矿井下煤层瓦斯含量测定方法的发展历程,综述了当前国内外井下煤层瓦斯含量测定技术的研究进展。分析了煤层瓦斯含量测定理论与工程应用中存在的问题,指出瓦斯在煤屑内的扩散机理与多物理场耦合作用下煤吸附瓦斯机理尚未研究透彻、井下“保真”取样技术存在局限性等因素制约了煤层瓦斯含量的精准测定。对总体发展趋势进行了展望,认为煤矿井下煤层瓦斯含量测定技术正朝着智能化、多元化的方向发展,加强理论研究,尽快完善装备,发展高精度的原位测量技术是未来的主要研究方向。
How to accurately measure the coal seam gas content in coal mine and further clarify the characteristics of coal seam gas accumulation is the key to the implementation of gas disaster control in mines or the exploitation and utilization of coalbed methane resources in coal mines.Based on previous research and literature investigation,the development of gas content determination method in underground coal seam was reviewed,and the research progress of this technology at home and abroad was summarized.The existing problems in the theory and engineering application of coal seam gas content determination were analyzed.It is pointed out that the precise determination of coal seam gas content is restricted by such factors as the mechanism of gas diffusion in coal dust and the mechanism of coal gas adsorption under the coupling of multiple physical fields gas have not been objectively revealed,and the limitation of the underground“fidelity”sampling technology.The overall development trend is prospected.It is considered that the measurement technology of coal seam gas content is developing towards the direction of intelligence and diversification.It is the main research direction to strengthen the theoretical research,improve the equipment as soon as possible,and develop the high precision in-situ measurement technology.
作者
程波
乔伟
颜文学
向衍斌
CHENG Bo;QIAO Wei;YAN Wenxue;XIANG Yanbin(State Key Laboratory of the Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China;CCTEG Chongqing Research Institute,Chongqing 400037,China)
出处
《矿业安全与环保》
北大核心
2019年第4期98-103,共6页
Mining Safety & Environmental Protection
基金
国家自然科学基金面上项目(51774319)
关键词
煤
瓦斯含量
测定方法
发展方向
吸附机理
原位测量
coal
gas content
determination method
direction of development
adsorption mechanism
in-situ measurement
