主动式补气对煤层瓦斯压力测定影响规律研究  

Study on the Influence Laws of Active Air Supply on Coal Seam Gas Pressure Measurement

作　　者：王凯[1] 任运强[1] 翟茂兵 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]大同煤矿集团挖金湾煤业有限公司,山西大同037000

出　　处：《煤矿安全》2012年第B10期7-11,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51174212);教育部新世纪优秀人才支持计划资助项目(NCET-10-0724);中央高校基本科研业务费资助项目(2010QZ05)

摘　　要：针对目前煤层瓦斯压力测定周期长、准确性差的问题,采用理论分析、数值模拟和现场实验相结合的研究方法,分析了主动式补气快速测压的原理,研究了补气气源压力、补气时间、煤层渗透率、原始瓦斯压力等因素对补气测压结果的影响规律。结果表明,主动式补气可以明显减少瓦斯压力测定所需要的时间,补气压力越接于煤层原始瓦斯压力、煤层透气性越大、补气时间越长,越有利于煤层瓦斯压力的测定。现场试验证实,主动式补气法对准确快速测定煤层瓦斯压力具有较好的实用价值。In order to solve the problems of low accuracy and long duration of current coal seam gas pressure measuring method,through theoretical analysis,numerical simulation and field test,the principle of coal seam gas pressure measurement with active air supply is analyzed,and the influence laws of the factors such as air supply pressure,air supply duration,seam permeability and original seam gas pressure on measuring result of gas pressure are also studied.The results show that the measuring duration can be significantly shortened through active air supply.The colser to the original seam gas pressure the injecting air pressure is,the higher the seam permeability is,the longer the injecting duration is,the better the application effect is.The field tests also show that the method of gas pressure measurement with active air supply provides practical values for rapid and accurate measurement of coal seam gas pressure.

关 键 词：瓦斯压力 快速测定 主动式补气 

分 类 号：TD712[矿业工程—矿井通风与安全]