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当前我国煤矿采掘工作面的爆破火焰,能够引燃瓦斯、煤尘有不少因素:诸如炸药受潮含水率过大、最小抵抗线过小、炮眼装药量过多等。本文仅从在有瓦斯煤尘爆炸危险的矿井,炮眼封泥长度过小,在炸药爆炸的瞬间产生高温火焰气体的角度,浅析点燃瓦斯煤尘的主要隐患、爆炸原因及其防治措施。
At present, China’s coal mining face blasting flames, capable of igniting gas, coal dust, there are many factors: such as moisture content of explosives dampness is too large, the minimum resistance line is too small, too much and so on. This paper only analyzes the main hidden danger, explosion reason and prevention measures of coal gas dust ignited when there is danger of gas and coal dust explosion, the length of the blasthole of the blasthole is too small and the high temperature flame gas is generated at the moment of explosion.