恒压条件井下煤样瓦斯解吸规律研究  

Study on the Gas Desorption Regularity of Coal Sample under Constant Pressure

作　　者：孙星 于宝种 SUN Xing;YU Baozhong(No.5 Mine of Shanxi＇s Yangquan Coal Industry Group Co.,Ltd.,Shanxi 045000;Chongqing Research Institute,China Coal Technology Engineering Group,Chongqing 454003)

机构地区：[1]阳泉煤业(集团)有限责任公司五矿,山西045000 [2]中煤科工集团重庆研究院有限公司,重庆454003

出　　处：《中国煤层气》2018年第4期30-35,共6页China Coalbed Methane

基　　金：国家重大科技专项(2016ZX05067001-004)

摘　　要：为了准确测定煤层瓦斯含量,在煤矿井下采集煤样测定瓦斯解吸数据,运用法和幂函数法推算瓦斯损失量,结果表明:利用法推算损失量时,暴露时间7min,解吸时段16min推算的损失量较准确,利用幂函数法推算损失量时,暴露时间2min,解吸时段30min推算的损失量较准确,两种方法比较,法更符合此煤样的解吸规律。使用深孔定点取样装置采集煤样具有定点、快速及测值准确的优点。In order to accurately measure the coal seam gas content,the gas desorption data is measured from coal samples collected in coal mine,and the gas loss amount is calculated using the √t method and the power function method. The results of the study have shown that when using the √t method,the gas loss amount is calculated more accurately with the exposure time of 7 mins and desorption time of 16 mins.When using the power function method,the gas loss amount is calculated more accurately with the exposure time of 2 mins and desorption time of 30 mins. Comparison of two methods,the √t method is more consistent with the desorption regularity of the coal samples. Using the deep-hole fixed-point sampling device to collect coal samples has the advantages of fixed-point,rapid and accurate measurement.

关 键 词：瓦斯含量 瓦斯损失量 解吸时间 暴露时间 定点取样 

分 类 号：TD712[矿业工程—矿井通风与安全]