煤矿安全2024，Vol.55Issue(10)：19-27,9.DOI:10.13347/j.cnki.mkaq.20230472
煤体膨胀致裂增透技术研究现状与展望
Research status and prospect of coal expansion fracturing and permeability improvement
摘要
Abstract
Safely and effectively increasing the permeability of coal seams and improving the efficiency of coalbed methane extrac-tion is the key to promoting efficient energy utilization.With the increase of coal mining depth in China,the difficulty of coalbed methane mining is increasing,and the risk of gas outbursts is becoming more and more serious.The expansion fracturing technology has the unique advantages of no noise,no vibration,and no dust,which makes it have broad application prospect in the field of coal seam permeability enhancement.Through the investigation and analysis of the existing research results,the reaction mechanism of static expansion materials and the mechanism of expansion cracking and permeability improvement were analyzed,and the influ-ence of parameters such as borehole diameter,spacing,and shape on the cracking effect of the coal body was combed,and the mech-anical models of coal damage(coal damage fracture model and crack propagation model)in the process of expansion cracking were summarized,and the application status of expansion cracking technology in the field of coal seam permeability enhancement was ex-pounded,and the research direction and development suggestions of expansion fracking technology in the field of coal seam per-meability enhancement were proposed.关键词
煤层增透/膨胀致裂/致裂因素/损伤断裂/裂隙扩展Key words
coal seam permeability improvement/expansion fracturing/cracking factor/damage and fracture/fracture propagation分类
矿业与冶金引用本文复制引用
张瑶,张嘉勇,崔啸,张雷,王桂明,苏霈洋,李建民..煤体膨胀致裂增透技术研究现状与展望[J].煤矿安全,2024,55(10):19-27,9.基金项目
国家自然科学基金资助项目(52174182) （52174182）
河北省自然科学基金资助项目(E2020209074) （E2020209074）
河北省属高校基本科研业务费资助项目(JQN2023019) （JQN2023019）
