采空区遗煤残余瓦斯含量及解吸规律与遗煤粒径的关系.pdfVIP

Vol郾44 No郾2 矿业安全与环保 第44卷摇 第2期 Apr郾2017 摇 摇 摇 摇 摇 摇 摇 摇 摇 MINING SAFETY ENVIRONMENTAL PROTECTION摇 摇 摇 摇 摇 摇 摇 2017年4月 马代辉.采空区遗煤残余瓦斯含量及解吸规律与遗煤粒径的关系[J].矿业安全与环保,2017,44(2):16-20. 文章编号:1008-4495(2017)02-0016-05 采空区遗煤残余瓦斯含量及解吸规律与 遗煤粒径的关系 马代辉1,2 (1.瓦斯灾害监控与应急技术国家重点实验室,重庆400037; 2. 中煤科工集团重庆研究院有限公司,重庆400037) 摘要:为提高煤矿采空区遗煤可抽采瓦斯量评估的准确性,利用自主研制的采空区遗煤残余瓦斯 解吸模拟实验装置,模拟密闭采空区条件下的不同粒径煤样瓦斯解吸过程,拟合并推导出遗煤残余瓦 斯解吸速度与时间、粒径的函数关系式,以及遗煤累计瓦斯解吸量经验计算公式。 验证表明,所推导的 遗煤瓦斯解吸公式能够较好地描述粒径对实验煤样瓦斯解吸规律的影响,能较好地体现粒径对煤样累 计瓦斯解吸量变化的影响。 关键词:采空区;遗煤;残余瓦斯含量;粒径;模拟实验 + 中图分类号:TD712 .67摇 摇 摇 文献标志码:A摇 摇 摇 网络出版时间:2017-04-11 10:14 网络出版地址:http:/ / / kcms/ detail/ 50.1062.td1014.048.html Relation of Residual Gas Content and Desorption Rule of Coal Left in Gob with Coal Particle Size MA Daihui1,2 (1. State Key Laboratory of Gas DisasterMonitoring and Emergency Technology,Chongqing400037,China; 2. China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing400037,China) Abstract:In order to improve the assessment accuracy of gas drainage volumefrom the residual coal in coal mine gob,a self-developed simulation testing devicefor gasdesorptionfromresidual coal inthegobwasusedto simulatethegasdesorption processfrom coal sampleswith different particle sizes under the condition of a simulated air-sealed gob,thefunctional relation expression of the gas desorption velocity from residual coal with the time and particle size andthe empirical calculatingformula for the cumulative gas desorption volumeof theresidual coalwerefittedandderived. Itwasverifiedthatthede