山东煤炭科技2024，Vol.42Issue(3)：93-97,5.DOI:10.3969/j.issn.1005-2801.2024.03.020
小庄煤矿液态二氧化碳驱替技术研究与应用
Research and Application of Liquid Carbon Dioxide Displacement Technology in Xiaozhuang Coal Mine
徐传玉 1窦桂东 1赵天烁2
作者信息
- 1. 陕西彬长小庄矿业有限公司,陕西 咸阳 713500
- 2. 西安科技大学安全科学与工程学院,陕西 西安 710054
- 折叠
摘要
Abstract
The insufficient efficiency of coal seam gas extraction is the main reason for the difficulty in continuous mining and excavation and frequent occurence of gas accidents in high gas and outburst mines.In order to improve the gas pre extraction efficiency of coal seams before mining and reduce the governance costs of mine gas disasters,based on the influence caused by liquid carbon dioxide of two aspects of low-temperature fracturing and permeability enhancement of coal seams and phase change exchange substitution displacement of coal seam gas,aiming at the problems of low permeability and difficult gas extraction in Binchang Xiaozhuang Coal Mine,taking the 40205 working face as the research object,the on-site extraction effect is analyzed through in-depth analysis and engineering application of liquid carbon dioxide displacement coalbed methane technology.The on-site application shows that the average gas concentration in the borehole after displacement increases by 1.425 times,and the average pure quantity increases by 1.33 times,indicating a significant improvement in gas extraction efficiency.This result preliminarily confirms the applicability of liquid carbon dioxide displacement technology and provides certain technical support for coal mine gas extraction.关键词
煤矿/二氧化碳/驱替/瓦斯抽采Key words
coal mine/carbon dioxide/displacement/gas extraction分类
矿业与冶金引用本文复制引用
徐传玉,窦桂东,赵天烁..小庄煤矿液态二氧化碳驱替技术研究与应用[J].山东煤炭科技,2024,42(3):93-97,5.
