摘要
对系统采集的7种不同结构类型煤进行了结构、构造特征的宏观和微观分析,结合前人对构造煤分类的划分标准,确定了所采集煤样的结构类型。将样品在自然条件下暴露0.5、1、3、7、15、30 d后装罐密封进行了残存瓦斯含量解吸实验,结果发现煤残存瓦斯的逸散过程不仅受暴露时间的影响,煤的结构类型对残存瓦斯的逸散起着十分重要的控制作用;煤的结构类型不同,其自然条件下达到稳定状态时的残存瓦斯量也不同。认为在进行煤层中瓦斯逸散量的研究时,对于不同破坏类型的煤其残存瓦斯含量的确定要以自然条件下不可解吸量为准。
The tectonic coal types of seven different type structure samples were determined on the basis of analyzing its macro and microscopic structure and tectonic and combining with present achievements on classification of tectonic coals. Under natural conditions,the sealed samples were sent to the laboratory and measured its residual gas quantity respectively after exposed 0. 5,1,3,7,15,30 d,results showed that the gas dissipation process of residual gas was not only effected by exposure time,but the structure type of the coal played a very important role. At the same time,different structure types of coal leaded to different residual gas content when coal reached the steady state under natural conditions. The conclusion is that when we study gas dissipation in the coal seam,the estimation of residual gas content should be taken the no- desorption quantity under natural conditions as the standard.
出处
《煤矿安全》
CAS
北大核心
2015年第10期179-182,共4页
Safety in Coal Mines
基金
中国科学院战略性先导科技专项资助项目(XDA05030104)
国家自然科学基金资助项目(41472134)
关键词
构造煤
结构类型
残存瓦斯
暴露时间
逸散特征
瓦斯含量
tectonic coal
structure type
residual gas
exposure time
dissipation characteristics
gas content
