特厚易自燃煤层综放开采采空区“三带”划分研究

Research for the 'division of three cuts'in combined mining goaf of very thick self-ignition coal seam

介绍了顺利开采特厚易自燃煤层的一种方法,即沿区段巷壁向采空区正后方埋设管路,通过收集采空区的混合气体,利用气相色谱仪分析其中的各种气体成分,并求出回归曲线,确定采空区的“三带”宽度。为选择预防采空区遗煤自燃的合理措施提供了科学依据。

The paper introduces a method of extravating smoothly the very thick self-ignition coal seam, which is laying pipeline in gaof area along the alley wall in district sublevel , through gathering the mixture of gas in goaf area, analyzing its different elements of gas using aero- chromatogram machine and get its regression curve, then decide the width of 'three cuts' of goaf. This method presents a scientific basis for the selection of rational measures for the prevention of the self-ignition of coal goaf area.