摘要
为提高煤层瓦斯量的测定精度,解决煤样暴露时间延长、漏失瓦斯量推算误差增大的问题,采用自主研发的吸附解吸试验系统,对一缘煤矿15号煤层煤样的瓦斯解吸规律进行试验研究,以及运用巴雷尔公式和瓦斯解吸理论方程的近似公式分别对0 ～10,0～30,0～ 60,0～120 min等时段内的实测数据进行了拟合效果对比分析,并以上述2个公式为模型新建了2个漏失瓦斯量的推算公式,将2个新建公式在不同暴露时间、拟合时段情况下的推算值与实测的模拟漏失瓦斯量进行了误差对比.结果表明,在暴露时间和拟合时段都较短的情况下,适合采用巴雷尔公式推算漏失瓦斯量;在暴露时间与拟合时段均较长的情况下,采用解吸理论方程的近似公式推算漏失瓦斯量误差较小;在暴露时间为60 min,拟合时段为60～120 min时,推算误差达到最小,为3.09％.
In practice study, the gas calculating loss error has a positive relationship with coal sample exposing time. In order to find a more accurate gas-loss-calculation-determination formula, some coal samples taken from No. 15 coal seam of Yiyuan coal mine desorption regulation experiments were carried out using a self-de- veloped adsorption-desorption experiment system. A fitting results matched by Barrell formula and the gas-de- sorption-theory-equation approximate-formula at 0 - 10, 0 - 30, 0 - 60, 0 - 120 min were analyzed. Two new gas loss-calculating-formulas were established basd on the above two formulas, applying these two formulas at different exposing time and fitting periods to calculate the gas loss and to compare with the actual loss. The re- sults revealed that at a short exposing time and fitting period, Barrell formula fitting is superior to gas-desorp- tion theory-approximate-formula fitting and it is sutable for other way to use gas-desorption-theory-approximate- formula fitting. The calculating deviation is minimum about 3.09% using gas-desorption-theory-approximate- formula at 60rain exposing time and a fitting period of 60 - 120 rain.
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2013年第6期658-662,690,共6页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金资助项目(50904024
51104059)
河南省瓦斯地质与瓦斯治理重点实验室--省部共建国家重点实验室培育基地开放基金项目(WS2012B04)
中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室开放基金资助项目(GF-CKF201103)
山西省自然科学基金资助项目(2012012015)
