瓦斯突出煤体形成的物理条件和过程  

Physical conditions and process of gas outburst coal forming

作　　者：张小兵[1,2] 闫江伟[1,2] 

机构地区：[1]河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地,河南焦作454003 [2]河南理工大学瓦斯地质研究所,河南焦作454003

出　　处：《中国安全生产科学技术》2014年第11期48-53,共6页Journal of Safety Science and Technology

基　　金：国家科技重大专项(2011ZX05040-005);国家自然科学基金项目(41102094);中国博士后科学基金项目(20090450928)

摘　　要：煤与瓦斯突出灾害严重威胁着煤矿安全生产,但目前对煤与瓦斯突出的物质载体形成机理研究鲜有报道。瓦斯突出煤体系指含有高能瓦斯且以强烈韧性破坏为主的构造煤体,具备发生煤与瓦斯突出的固体和气体介质条件。以煤体变形变质为主线,综述相关文献并结合研究积累,分析揭示了瓦斯突出煤体形成的物理条件和过程:煤体结构严重破坏的构造煤、积聚于此的大量瓦斯,是瓦斯突出煤体形成的物质基础;构造应力与重力、吸附/解吸作用、气体增滑与气楔作用,是瓦斯突出煤体形成的动力基础;煤体破坏、瓦斯积聚、封闭压实,是瓦斯突出煤体形成过程的主要特征。本研究对复杂地质条件下区域瓦斯预测防治具有重要指导作用。Coal-gas outburst is a serious threat to the safety production of coal mine.However,the systematic indepth study to the formation mechanism of gas outburst coal is scarce.Gas outburst coal which is consisted by heavily damaged deformed coal delamination and high-energy coal seam gas,has coal-gas outburst danger in coal seam.Focusing on deformation-metamorphism of coal,the physical conditions and process of gas outburst coal forming were revealed based on the references and previous researches of authors.It was summarized as follows：heavily damaged deformed coal and abundant gas accumulation in coal seam,are the material basis of gas outburst coal forming;the dynamic basis of gas outburst coal forming include tectonic stress and gravity,adsorption / desorption,gas slipping and wedge actions;the main characteristics of gas outburst coal forming are coal body failure,gas accumulation and closed compaction.The research plays an important role on the prediction and prevention of coalgas outburst hazard in complex geological environments.

关 键 词：瓦斯地质 变形变质 瓦斯突出煤体 物理条件 形成过程 

分 类 号：X936[环境科学与工程—安全科学]