煤矿井下瓦斯抽采技术的应用研究_中国煤炭行业知识服务平台

煤矿井下瓦斯抽采技术的应用研究

Title

Research and Application of Downhole Gas Drainage Technology in Coal Mines
作者

孙绪龙
Author

Sun Xulong
单位

晋能控股煤业集团煤峪口矿
Organization

Jinneng Holding Coal Industry Group Meiyukou Mine
摘要

针对煤峪口矿井下瓦斯抽采效率低的问题,提出了一种新的井下中硬煤层长钻孔分段压裂抽采技术,以分段压裂为核心并利用仿真验证的方法确定了井下抽采工艺参数。应用表明,新的瓦斯综合防治技术能够将井下瓦斯抽采纯量比优化前提升4.93倍以上,将瓦斯抽采时的体积分数比优化前提升2.21倍以上。
Abstract

In view of the low efficiency of downhole gas drainage in Meiyukou Mine, a new underground medium hard coal seam long borehole segmented fracturing extraction technology is put forward. The core of the technology is segmented fracturing, and the underground extraction process parameters are determined using simulation verification methods. The application shows that the new gas comprehensive prevention and control technology can increase the pure amount of downhole gas drainage by more than 4.93 times compared to before optimization, and increase the volume analysis during gas drainage by more than 2.21 times compared to before optimization.
关键词

瓦斯抽采长钻孔水力压裂
KeyWords

gas drainage; long borehole; hydraulic fracturing
DOI

10.3969/j.issn.1005-2801.2023.09.041