瓦斯形成类型研究

Study on the Types of Gas Formation

瓦斯时常伴随着采掘过程,现有观点认为矿井瓦斯形成于整个成煤过程的始终,包括早期成煤阶段原地瓦斯和后期构造变动异地瓦斯。瓦斯形成问题很少遭人质疑,但矿井瓦斯事故仍然不断发生,说明瓦斯形成机理有待完善。通过查阅国内外涉及瓦斯的文献,瓦斯形成类型是多样的。研究获知瓦斯类型除原地(原生、第一类)瓦斯、异地(次生、第二类)瓦斯外,还存在一种采煤过程中形成的新生(第三类)瓦斯。新的瓦斯形成类型将为煤矿瓦斯事故提供一种新思路。

Gas is often accompanied by mining process.The existing viewpoint holds that mine gas is formed throughout the whole coal-forming process,including in-situ gas in the early coal-forming stage and in-situ gas in the late structural changes.The problem of gas formation is seldom questioned,but mine gas accidents still occur constantly,which indicates that the mechanism of gas formation needs to be improved.According to the literature about gas at home and abroad,the types of gas formation are various.In addition to in-situ(primary,first class)gas and off-site(secondary,second class)gas,a rebirthed(third class)gas formed in the process of coal mining.A new type of gas formation will provide a new idea for gas accidents in coal mines.