摘要
为了研究开滦矿区煤层瓦斯解吸规律,对开滦矿区吕家坨和钱家营矿煤层瓦斯含量进行井下直接测定与煤样吸附解吸实验。通过设定煤层瓦斯压力下的吸附解吸实验,分析数据得出解吸规律与损失量推算公式后,与国家标准推荐的损失量推算公式作比较,得出适合开滦矿区的煤层瓦斯解吸规律,并对煤层瓦斯含量进行修正。研究表明,新得出的瓦斯解吸规率符合Q=at^b,利用新得出的瓦斯解吸规律测定出的瓦斯含量要比国家推荐方法测定的瓦斯含量最大提高4.3%,反算后的瓦斯压力最大提高5.0%。
In order to study the law of gas desorption in coal seam of kailuan mining area,the underground di- rect determination of gas content in coal seam of Lujiatuo and Qianjiaying mines in Kailuan mining area and the coal sample absorption desorption experiment were carried out. Through the experiment of adsorption and desorption under the pressure of coal seam gas,after analyzing the data and obtaining the desorption rule and the calculation formula of loss amount,comparing with the calculation formula of loss amount recommended by the national standard,the coal seam gas desorption rule suitable for kailuan mining area was obtained,and the coal seam gas content was modified. The study shows that the newly obtained gas desorption law is more appli- cable than the national recommended gas desorption law,and the gas content determined by the newly obtained gas desorption law is up to 4. 3% higher than that determined by the national recommended method, and the gas pressure after reverse calculation is up to 5. 0% higher.
作者
祁明
齐黎明
QI Ming;QI LiMing(School of Safety Engineering,North China Institute of Science & Technology,Yanjiao,065201,China;Key Lab of Mine Disaster Prevention & Control in Hebei Province,Langfang ,065201,China)
出处
《华北科技学院学报》
2019年第3期41-45,共5页
Journal of North China Institute of Science and Technology
基金
河北省自然科学基金资助(E2015508053)
河北省矿井灾害防治重点实验室开放基金资助(KJZH2013K09)
关键词
开滦矿区
解吸规律
损失量推算
瓦斯含量
瓦斯压力
Kailuan mining area
law of desorption
calculation of loss
gas content
gas pressure
