煤层瓦斯含量测定深孔快速取样技术研究  

Research on deep-hole fast sampling technology for determination of coal seam gas content

作　　者：严明庆 YAN Mingqing(Chongqing Research Institute Co.,Ltd.,China Coal Technology&Engineering Group,Chongqing 400037,China;National Key Laboratory of Gas Disaster Detecting,Preventing&Emergency Controlling,Chongqing 400037,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,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：《矿山机械》2021年第3期60-64,共5页Mining & Processing Equipment

基　　金：国家“十二五”科技支撑计划项目(2012BAK04B01)。

摘　　要：针对煤层瓦斯含量深孔取样存在取样时间较长、取样质量较少、取样成功率较低的问题,设计了深孔快速取样装置,并进行模拟计算。模拟计算结果显示,六喷嘴与八喷嘴引射器串联后产生的负压最大,最大负压为-11 164 Pa,取样装置取样时间小于 4 min,取样质量超过 1 kg,满足了瓦斯含量快速取样测定的技术要求。In view of the problems existing in deep-hole sampling for the determination of coal seam gas content such as long sampling duration,poor sampling mass and low successful sampling ratio,a deep-hole fast sampling device was designed,and then simulation and calculation were conducted.The simulation and calculation results showed:the six-nozzle jet and the eight-nozzle jet in tandem produced the maximum negative pressure of-11 164 Pa,the sampling duration was less than 4 min,the sampling mass was more than 1 kg,which met the requirement of fast sampling for gas content determination.

关 键 词：煤层瓦斯含量 快速取样装置 串联引射器 

分 类 号：TQ075.2[化学工程]