坚硬顶板综放开采周期来压期间瓦斯涌出规律及治理

根据宽沟煤矿Ⅰ010202综放工作面的矿压观测和瓦斯监测数据,分析了基于矿山压力变化的采场瓦斯涌出规律，研究结果表明：工作面瓦斯涌出量随工作面支架工作阻力增大而增大,周期来压期间瓦斯涌出量明显大于其他时期,并且瓦斯涌出周期与顶板周期来压时间几乎同步，瓦斯涌出时间略滞后于顶板周期来压时间。采用上隅角与工作面中巷长短距离高位钻孔、插管抽放等措施进行瓦斯治理，其效果良好。

Gas Emission Rule and Its Control during Hard Roof Periodic Weighting in Full-mechanized Caving Mining

Based on the underground pressure observation and gas monitoring data inⅠ010202 fully-mechanized caving face in Kuangou Mine, analysis was made on the stope gas emission rule according to the change of underground pressure. Study results showed that the gas emission in the working face increased with the increase of the working resistance of the face support, the gas emission during periodic weighting was clearly greater than that at any other time, the period of gas emission was almost synchronous with the periodic weighting of the roof, and the time of gas emission was slightly behind the periodic weighting time of the roof. The gas control measures were applied, including the gas dranaige by the long or short interval high-level boreholes drilled at the corner angle and in the middle lane of the face, good effect was obtained.