吸附作用对煤体瓦斯渗透规律的影响  

Adsorption Role Affected to Gas Permeable Law of Coal Mass

作　　者：吴教锟[1,2] 牟景珊[1,2] 隆清明[1,2] 

机构地区：[1]中国煤炭科工集团重庆研究院,重庆400037 [2]瓦斯灾害监控与应急技术国家重点实验室,重庆400037

出　　处：《煤炭科学技术》2012年第9期39-41,共3页Coal Science and Technology

摘　　要：运用自制的瓦斯渗透率测试装置,从吸附压力、吸附压差、吸附温度3方面研究了吸附作用对含瓦斯煤体中瓦斯渗透率的影响,同时试验模拟得出了瓦斯抽采渗透率的变化规律。结果表明:同一煤样随着吸附压力的增大,吸附量的增加,渗透率降低。相同吸附压力下,随着吸附温度的升高,渗透率降低。煤层抽采瓦斯以后压力下降,渗透率提高,与模拟试验得出的规律一致。A self developed gas permeability test device was applied to study the adsorption role affected to the gas permeability of the gas seam from the adsorption pressure, adsorption pressure difference and adsorption temperature, meanwhile, simulated and analyzed the var-iation law of the permeability with gas drainage. The results showed that the adsorption value of the same coal samples would increase and the permeability would reduce with the adsorption pressure increased. Under the same adsorption pressure, with the adsorption tempera-ture increased, the permeability would reduce. After the seam gas drained, the gas pressure would reduce, the permeability improved, it was the same to the experiment law.

关 键 词：瓦斯 吸附作用 渗透率 型煤 吸附压力 

分 类 号：TD712[矿业工程—矿井通风与安全]