基于主成分分析法的不同地区煤储层瓦斯吸附量差异性研究  

Study on the difference of gas adsorption amount of coal reservoirs in different areas based on principal component analysis

作　　者：吕宝艳 杨宏民[1,2] 陈立伟[1,2] 范尚崇[1] LYU Baoyan;YANG Hongmin;CHEN Liwei;FAN Shangchong(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China;Engineering Research,Center of the Ministry of Education for Coal Mine Disaster Prevention and Rescue and Disaster Relief,Jiaozuo 454000,Henan,China)

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454000 [2]煤矿灾害预防与抢险救灾教育部工程研究中心,河南焦作454000

出　　处：《河南理工大学学报（自然科学版）》2021年第2期1-7,共7页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(51174081);教育部创新团队发展支持计划项目(IRT1622);河南省高校科技创新团队支持计划项目(17IRTSTHN030)。

摘　　要：为了准确有效地预测煤储层瓦斯吸附量,以我国沁水盆地和鄂尔多斯盆地东缘的典型煤层气区块为研究对象,采用主成分分析法确定煤储层瓦斯吸附量影响因素的主成分,进而利用主成分建立煤储层瓦斯吸附量模型。结果表明:从8个影响煤储层瓦斯吸附量因素的指标中提取出4个主成分,这4个主成分对原指标系统的信息解释达到了86.804%;不同区块煤储层瓦斯吸附量均存在明显差异,其中温度、压力、水分和煤岩显微组分起决定性作用;不同区块煤储层瓦斯吸附量的预测值与实测值相差不大,基本能满足工程要求,可有效降低井下开采的未知风险。研究结果可为我国开发煤层气提供理论基础和实践指导。In order to accurately and effectively predict the gas adsorption amount of coal reservoirs,the main components of the coalbed methane block in Qinshui basin and the eastern margin of the Ordos basin in China were studied.The principal component analysis method was used to determine the main components of the factors affecting the gas adsorption amount of coal reservoirs.Then,by using the principal components,a model of gas adsorption amount of coal reservoir was established.The principal component analysis was preferred by comparison of various dimensionality reduction methods.The results showed that four principal components were extracted from the eight indicators affecting the gas adsorption amount of coal reservoirs,and the information interpretation of the four principal components to the original indicator system reached 86.804%;There were significant differences in gas adsorption amount of coal reservoirs in different blocks,among them temperature,pressure,moisture and coal rock micro-components played a decisive role;The predicted values of gas adsorption amount of coal reservoirs in different blocks were not much different from the actual measurements.The engineering requirements could be basically met,and the unknown risks of underground mining were extremely effectively reduced,which provided theoretical basis and guidance for the research and development of coalbed methane in China.

关 键 词：沁水盆地 鄂尔多斯盆地东缘 煤储层 主成分分析 瓦斯吸附量 

分 类 号：TD712[矿业工程—矿井通风与安全]