煤层瓦斯压力的分布规律及测量方法

• 作 者: 于不凡
• 出 处: 煤矿安全技术
• 发表日期: 1984年03期
• 关键词: 煤层瓦斯压力 瓦斯压力 成煤 分布规律 无烟煤 长焰煤 封孔 胶圈 测量方法 构造运动

一、概述瓦斯是植物残骸在成煤过程中伴生的产物.在长达数百万年的成煤过程中,不断形成并放出瓦斯.根据苏联Г.Д.李金的资料[1],在褐煤变质成为各种牌号煤时形成的沼气量分别为:长焰煤——30～40米~3/吨;肥煤——70～80米~3/吨;瘦煤——120～18O米~3/吨;半无烟煤——200米~3/吨.然而,在漫长的地质年代中,随着含煤地层经受各种构造运动和煤层的升降,瓦斯也发生不断的运动和积聚,至今已大部分逸散,仅有部份还保存在煤层和岩层中.

I. Overview Gas is the product of plant wreck associated with coal formation, and the continuous formation and release of gas during millions of years of coal formation. According to the data of Soviet Union Г.Д. Li Jin [1], at Lignite metamorphism as a variety of brands of coal formed when the amount of methane are: long flame coal - 30 ~ 40 m ~ 3 / t; fat coal - 70 ~ 80 m ~ 3 / t; lean coal - 120 ~ 18O meters ~ 3 / t and semi-anthracite - 200-3 / t However, during the long geologic age, the gas also undergoes continuous movement and accumulation as the coal-bearing formation undergoes various tectonic movements and coal seams, Most have escaped, only part of the still stored in the coal and rock formations.