摘要
为探究超高压水力割缝技术在中硬煤层瓦斯抽采中的增透效果及工程适用性,本研究设计并开展了4种抽采方案的对比试验。结果表明,超高压水力割缝方案在瓦斯抽采效率上显著优于普通抽采、高压水力压裂及其联合方案,平均每日瓦斯浓度和纯流量分别提高2.06倍和2.68倍,影响半径达4.75 m.工程实施中,该方案钻孔施工时间和抽采达标时间分别减少31%和50%.研究表明,超高压水力割缝技术显著提升了低透气性煤层的瓦斯抽采效率,为朱家湾煤矿及类似地质条件矿井的瓦斯治理提供了技术参考。
To investigate the permeability enhancement effect and engineering applicability of ultra-high pressure hydraulic slotting technology in gas extraction from medium-hard coal seams,this study designed and conducted comparative experiments involving four extraction schemes.The results indicate that the ultra-high pressure hydraulic slotting scheme significantly outperforms conventional extraction,high-pressure hydraulic fracturing,and their combined schemes in gas extraction efficiency.The average daily gas concentration and pure gas flow increased by 2.06 and 2.68 times,respectively,with an influence radius of 4.75 m.In practical applications,the drilling time and time to achieve extraction standards were reduced by 31%and 50%,respectively.The findings demonstrate that ultra-high pressure hydraulic slotting technology significantly enhances gas extraction efficiency in low-permeability coal seams,providing a technical reference for gas management in Zhujiawan Coal Mine and other mines with similar geological conditions.
作者
梁银权
杨宁波
陈涛
衡献伟
王晨
李志
LIANG Yinquan;YANG Ningbo;CHEN Tao;HENG Xianwei;WANG Chen;LI Zhi(Yunnan Dongyuan Zhenxiong Mining Industry Co.,Ltd.,Kunming 657000,China;Guizhou Mine Safety Scientific Research Institute Co.,Ltd.,Guiyang 550025,China;Guizhou Coal Mine Safe and Efficient Mining Technology Support and Service Talent Base,Guiyang 550025,China;Coal Industry Southern Region Coal Mine Disaster Prevention and Control Engineering Research Center,Guiyang 550025,China;Guizhou Provincial Engineering Technology Research Center for Coal Mine Gas Prevention and Control,Guiyang 550025,China;Guizhou Laboratory of Energy Intelligent Development and Efficient Utilization,Guiyang 550025,China)
出处
《煤》
2026年第3期71-77,共7页
Coal
基金
贵州省基础研究(自然科学)计划项目(黔科合基础-ZK[2023]一般199)
贵州省科技支撑计划项目(黔科合支撑[2024]一般025,黔科合支撑[2021]一般348,黔科合支撑DXGA[2025]一般002)
贵州省科技成果应用及产业化计划项目(黔科合成果[2024]一般150,黔科合成果-LH[2024]重大020)
贵州省科技重大计划项目(贵州省科研机构创新能力建设项目(黔科合服企[2024]006)
贵州省高层次创新型人才项目(黔科合平台人才-GCC[2023]102,GCC[2023]107)。
关键词
低渗
中硬煤层
超高压水力割缝
瓦斯抽采
low-permeability
medium-hard coal seam
ultra-high pressure hydraulic slotting
gas drainage
