煤矿安全2019，Vol.50Issue(5)：7-10,4.DOI:10.13347/j.cnki.mkaq.2019.05.002
基于示踪气体法的覆岩"竖三带"测定
"Vertical Three Zones"Determination of Overburden Based on Tracer Gas Method
摘要
Abstract
According to the present situation of the"vertical three zones"determination technology of the overburden strata in coal mine, the tracer gas method was proposed to determine the "vertical three zones", and the SF6 acted as the tracer gas; the failure process of the high level boreholes in the process of coal seam mining was analyzed and the technical principle of using the SF6 to determine the"vertical three zones"of the overburden was determined, and the experimental scheme of the"vertical three zones"was designed with multiple boreholes comparison. The field tests showed that the upper and lower boundaries of the fractured zone determined by the 1# to 4# boreholes were almost the same, the fractured zone range of the 15203 working face overburden was 35.8 m to 71.2 m, the fully developed strata of the fracture zone was 54.1 m to 58.5 m, the curve subsidence zone range was more than 71.2 m, and the caving zone range was less than 35.8 m. The accurate determination of fracture zone can provide guidance for the high level boreholes design, reduce drilling works and improve the coal mine production efficiency.关键词
示踪技术/SF6/竖三带/瓦斯流动/高位钻孔/瓦斯治理Key words
tracer technique/SF6/vertical three zones/gas flow/high level boreholes/gas control分类
矿业与冶金引用本文复制引用
邹永洺..基于示踪气体法的覆岩"竖三带"测定[J].煤矿安全,2019,50(5):7-10,4.基金项目
国家自然科学基金面上资助项目(51327007,51174157,51374168) （51327007,51174157,51374168）
