煤与瓦斯突出影响因素耦合关系研究

Study on Coupling Relationships of Outburst Influencing Factors between Coal and Gas

对平煤八矿煤与瓦斯突出特征统计分析,认为地质构造、构造煤发育特征及煤层瓦斯赋存特征是影响平煤八矿煤与瓦斯突出的主要地质因素,同时结合平宝公司实例重点分析各影响因素之间相互关系。研究结果表明:地质构造作为突出诱发因素,占主导作用,控制瓦斯压力梯度形成高压瓦斯,控制煤层瓦斯赋存;地质构造促进构造煤变质、变形过程,影响构造煤发育特征;三种影响因素互相叠加形成煤与瓦斯突出的构造物理环境,共同作用至一定程度时即发生煤与瓦斯突出。

Taking coal-mine eight of Pingdingshan Coal Mine Group as example,the statistical analysis of the characteristics of coal and gas outburst shows that geological structure,development characteristics of structural coal and occurrence characteristics of coalbed gas are main geological factors which affect coal and gas outburst.Combined with examples of Pingbao Company,the relationships between the various influencing factors are analyzed.The results showed that geological structures,as predisposing factors of outburst,play a dominant role in controlling the gas pressure gradient to form a high pressure gas and coalbed gas occurrence;geological structures also promote metamorphism and deformation process of structural coal and affect its development characteristics;three factors superimpose on each other,forming the structural physical environment of coal and gas outburst,and works together to cause coal and gas outburst.