Improved prediction model for determining the lost gas content of extreme-soft and outburst-prone coal seam

被引：0
|
作者：
Dong-fang, Xu [1 ]
Tao, Feng [2 ]
Zuo-Ya, Qin [3 ]
Jing, Yang [3 ]
机构：
[1] Central South University, Hunan Provincial Coal Science Research Institute, Hunan Changsha, China
[2] Central South University, Hunan University of Science and Technology, Hunan Xiangtan, China
[3] Hunan Provincial Coal Science Research Institute, Hunan Changsha, China
来源：
Open Petroleum Engineering Journal | 2014年 / 7卷 / 01期
关键词：
Coal sample - Coal seams - Extreme-soft - Gas content - Hunan province - Mean errors - Power functions - Prediction model;
D O I：
暂无
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学科分类号：
摘要：
Few study has been carried out on the desorption rules of extreme-soft and outburst-prone coal in south of China, especially coal from Hunan Province of which the value of “f” is normally less than 0.2. Desorption experiments are conducted on the coal samples from Hongwei and Jiahe Mines in Hunan Province, and the following phenomena can be observed: the calculating mean error by √t method and power function method of Hongwei coal samples are 29.68% and 68.33%, 28.55% and 70.28% of Jiahe, the calculating result by the two methods is always lower. After comparison we find that the √t method is more precise than power function method, so calculation method is improved based on √t method, mean error of gas content determination by the new method in experiment and coal mine are 6.88% and 5.24%, both less than 10%. © Dong-fang et al.
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页码：119 / 124
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