摘要
详细地给出了煤矿巷道内瓦斯爆炸与地面超长建筑物爆炸泄压特性的异同点。指出煤矿巷道中瓦斯爆炸的压力与瓦斯突出时形成的瓦斯—空气可爆混气段的长度(用长径比表示)、巷道的水力学当量直径、可爆混气段的位置、点火源的位置有关。瓦斯—空气可爆混气段位于掘进端面,点火源也位于掘进端面,长径比为20的一段长度,瓦斯体积分数约为10%的可爆混气段可以产生爆轰,造成整个矿井大部分人员死亡。
The similarities and differences of explosion characteristic between the gas explosion in coal lane and in elongated buildings were indicated on the basis of the papers published in journal and the test datum performed by us. The research results demonstrate that the pressure of gas explosion in coal mine is depended upon the length of gas-air mixture （expressed by length-diameter ratio）formed in coal lane when gas gushed from coal bed, hydraulics equivalent diameter of coal line,the site of the length of explosible gas-air mixture in coal lane and the site of ignition source. The detonation will happened in case the site of length of about 10% gas-air mixture with ≥20 length-diameter ratio is at the tunneling end of tunneling lane, and the ignition source closes the tunneling end. The detonation can lead to the death of a great number people in coal lane.
出处
《消防科学与技术》
CAS
2007年第1期9-12,共4页
Fire Science and Technology
关键词
煤矿
瓦斯
爆炸
爆炸泄压
爆轰
coal mine
gas
explosion
explosion pressure relief
detonation
