新春煤矿突出煤层合理预抽期研究

Study of Reasonable Pre-drainage Period of Outburst Coal Seam in Xinchun Coal Mine

煤矿瓦斯灾害治理是全世界共同面临的难题,我国把瓦斯抽放,即"先抽后采"作为预防措施,有效地降低了瓦斯事故,但抽放周期过长,影响了矿井的正常生产。通过对新春煤矿M3煤层试验区钻孔瓦斯抽出量研究,得出了钻孔控制区域内瓦斯累计抽出量与预抽时间的拟合关系,计算出M3煤层瓦斯合理预抽期。

Gas disaster control is difficulty problem that all of the world faced, and gas drainage in domestic like ’ drainage first thenmining ‘ as prevention measures, and then gas disaster was decreased effectively, but drainage period was long, then mining produc-tion was influenced. According drilling hole gas drainage of test area of M3 coal seam i Xinchun coal mine, then coupling relationshipbetween drainage amount and drainage time of controlling area by drilling hole, the reasonable drainage period of M3 coal seam was ob-tained.