摘要
为了研究CS_(2)溶液的环保、经济和增渗综合作用效果,以河南焦作赵固矿无烟煤为研究对象,无水乙醇作为混合剂,开展不同体积分数CS_(2)溶液对煤的增渗试验研究。结果表明:经不同体积分数CS_(2)溶液萃取后的煤样,渗透率从原始的0.00016~0.00133 mD增加到0.00018~0.02216 mD,增渗率提高了37.31%~1566.17%;煤样端面裂隙的面密度与增渗率随CS_(2)体积分数的增大均不断增大,CS_(2)体积分数达到50%时,煤样的增渗效果出现了转折点,即体积分数小于50%时,增渗率随体积分数增大而提高,但增幅相对较小,与之相反,体积分数大于50%时,增渗率随体积分数增大大幅提高。煤样的物质组成、化学结构和CS_(2)萃取煤中的物质不同,是造成不同体积分数CS_(2)萃取后煤样增渗效果差异的主要原因。
In order to research the comprehensive effects of CS_(2)on environmental protection,economy and permeability enhancement,the anthracite coal sample from Zhaogu Mine of Jiaozuo in Henan Province was selected to conduct the experiments by CS_(2)with different volume fractions.The results indicated that the permeability of the modified coal samples had increased from 0.00016~0.00133 mD to 0.00018~0.02216 mD,and the ratio of the enhanced permeability rised from 37.31%to 1566.17%.Furthermore,the areal density of fractures was improved at the end surface and the enhanced permeability ratio of coal samples was promoted with the volume fraction of CS_(2).A turning point exited on the permeability enhancement effect of coal sample at 50%volume fraction of CS_(2).The permeability enhancement ratio increased with the volume fraction,but the growth was relatively small when the volume faction was less than 50%.On the contrary,the permeability enhancement ratio increased quickly with the volume fraction larger than 50%.In conclusion,the main reasons for the difference of the permeability enhancement effect were due to the material composition and chemical structure of the coal sample,in addition to different substances extracted from the coals by CS_(2).
作者
刘高峰
张震
曹运兴
鲜保安
张洲
郭飞
LIU Gaofeng;ZHANG Zhen;CAO Yunxing;XIAN Baoan;ZHANG Zhou;GUO Fei(Gas Geology Engineering Research Center,Henan Polytechnic University,Jiaozuo 454000,Henan,China;Henan International Joint Laboratory for Unconventional Energy Geology and Development,Jiaozuo 454000,Henan,China;Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region,Jiaozuo 454000,Henan,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2022年第5期8-16,共9页
Journal of Henan Polytechnic University（Natural Science）
基金
国家科技重大专项项目(2017ZX05064002)
国家自然科学基金资助项目(41302126)。
关键词
二硫化碳
体积分数
煤
溶剂萃取
增渗
CS_(2)
volume fraction
coal
solvent extraction
enhanced permeability
作者简介
第一作者:刘高峰(1982-),河南沁阳人,博士,副教授,主要从事煤层气地质与开发方面的教学和研究工作。Email:liugaofeng82@163.com。
