基于区域瓦斯治理的钻割抽一体化技术及应用-ingentaconnect.pdfVIP

摇 第36卷第1期 煤摇 摇 炭摇 摇 学摇 摇 报 Vol.36摇 No.1摇 摇 2011年 1月 JOURNAL OF CHINA COAL SOCIETY Jan.摇 2011摇 摇 摇 文章编号:0253-9993(2011)01-0075-05 基于区域瓦斯治理的钻割抽一体化技术及应用 林柏泉,孟凡伟,张海宾 (中国矿业大学 安全工程学院,江苏 徐州摇 221008) 摘摇 要:针对我国高瓦斯煤层赋存特点及目前煤矿区域瓦斯治理过程中存在的问题,采用理论研 究、数学建模和现场测试相结合的方式,研究了基于区域瓦斯治理的高瓦斯低透气性煤层卸压增透 技术及改善瓦斯流动与解吸方式,建立了高压射流割缝卸压范围内瓦斯流动毛细管模型,并且通过 对割缝主体影响区、边界影响区消突时间的对比分析,得出了割缝影响区内任一点消突的判据和割 缝卸压范围内整体消突时间。 最后,结合笔者多年从事瓦斯抽采的研究和科研成果,提出了基于区 域瓦斯治理的钻割抽一体化技术,开发了相应的配套设备和材料,在国内有关矿井进行了应用。 应 用结果表明,该技术可显著提高抽放钻孔的单孔有效影响范围,减少区域瓦斯治理需要的钻孔数 量,缩短区域抽采时间,提高区域抽采效率。 关键词:煤矿瓦斯;钻割抽一体化;卸压增透;瓦斯抽采 中图分类号:TD712郾6摇 摇 摇 文献标志码:A Regional gas control based on drilling鄄slotting鄄extracting integration technology LIN Bai鄄quan,MENG Fan鄄wei,ZHANG Hai鄄bin (School of Safety Engineering,China University of Mining Technology,Xuzhou摇 221008,China) Abstract:For the coal seam characteristics with high concentration of gas and the current problems of regional gas control,the technology of pressure relief and permeability enhancements in low permeability coal seam based on re鄄 gional gas control and ways to improve gasflow and desorption were researched by theoretical research,mathematical modeling andfieldtesting,andagasflow capillary model inthepressurerelief areaafter slottingwasestablished,then the outburst elimination criterion of any point in pressure relief area and the outburst elimination time of the overall pressure relief areawereobtainedby analyzingtheoutbursteliminationtimeof slottedmainaffectedareaandboundary affectedarea.Additionally,ancillary equipmentsandmaterialscombinedwiththedrilling鄄slotting鄄extracting integration technology were deeply developed based on regional gas control method,which were confirmed by the field tes