煤矿安全2025，Vol.56Issue(6)：9-16,8.DOI:10.13347/j.cnki.mkaq.20231043
注浆压力对钻孔封孔段渗流特性的影响分析
Study on the influence of grouting pressure on seepage characteristics of drill hole sealing section
摘要
Abstract
Gas drilling and extraction is one of the important means of gas control.In order to effectively improve the sealing effect of drilled holes,the influence of drilling grouting pressure on the sealing effect was studied.The permeability test and the scanning electron microscope(SEM)were carried out respectively under different grouting pressures by using the self-made grouting system;according to the results of SEM experiment,the tightness of the arrangement between the slurry particles and the cementation of the interface were analyzed.The results show that with the increase of grouting pressure,the permeability drop of the grouting borehole sample increases first and then decreases,and the mass increase gradually increases and tends to be the same,and the optimal grout-ing pressure is 1.2 MPa;the decrease of permeability and the increase of quality of the grouting material samples are negative expo-nential;the greater the grouting pressure is,the closer the arrangement between the slurry particles,and the smaller the probability of porosity.关键词
瓦斯抽采/钻孔封孔/钻孔注浆/注浆压力/渗透率/电镜扫描/瓦斯治理/注浆材料Key words
gas extraction/drilling sealing/drilling grouting/grouting pressure/permeability/scanning electron microscopy/gas control/grouting materials分类
矿业与冶金引用本文复制引用
朱熹,白云,陈聪,曾平昌,钟先才,曹塘根,王登科,卫彦昭,张小东..注浆压力对钻孔封孔段渗流特性的影响分析[J].煤矿安全,2025,56(6):9-16,8.基金项目
国家自然科学基金资助项目(52174174) （52174174）
河南省高等学校重点科研项目计划基础研究专项资助项目(21zx004) （21zx004）
河南理工大学创新团队计划资助项目(T2022-1) （T2022-1）
