There are usually accidents in coal mines, which are mainly gas explosion and dust explosion.
煤矿开采比较容易出事故，煤矿事故又主要是瓦斯爆炸和煤尘爆炸。
On the basis of gas explosion tests (without taking part in of coal dust) in different gas content circumstances and regression analysis a series of safety distances have been obtained .
并通过瓦斯爆炸试验和回归分析，得出了井下一定量的沼气在无煤尘参与的条件下发生爆炸时的安全距离。
The frequent gas and coal dust explosion accidents in coal mine is a big threat to the life and property.
我国煤矿频繁发生的瓦斯、煤尘爆炸事故给人民的生命和财产安全带来了严重的威胁。
Stray current in coal mine underground is an important factor caused gas and coal dust explosion, which seriously threatened safety production in mines.
煤矿井下杂散电流是引起瓦斯、煤尘爆炸的一个重要起因，严重威胁到煤矿的安全生产。
Gas explosion is major disasters in coal mines, so is coal-dust explosion. Therefore, it is very important to analyze the causes of the explosion and make preventive measures.
煤尘爆炸同瓦斯爆炸一样都属于矿井中的重大灾害事故。因此，分析煤尘爆炸原因，制订防治措施，显得特别重要。
Experimental study was conducted on the propagation regularity of flame in the process of gas and coal-dust combustion and explosion in the existence of obstacle objects.
对障碍物在瓦斯煤尘燃烧爆炸过程中的火焰传播规律进行了实验研究，结果表明：障碍物对火焰的传播速度具有重要的影响。
At the same time, the high temperature of blasting gas can causing gas and coal dust explosion.
同时爆生气体温度较高，容易引起瓦斯和煤尘爆炸。
The mine electric leakage can not only cause the electric shock of the people but also some serious accidents such as the fire hazard, coal dust explosion, and gas explosion, etc.
煤矿井下漏电，不仅会引起人身触电，还会酿成火灾、煤尘及瓦斯爆炸等恶性事故。
Widely used in outdoor blasting and underground blasting projects with combustible gas and mineral dust explosion risk.
广泛适用于露天及可燃气和(或)矿尘爆炸危险的地下爆破工程。
Suitable for outdoor blasting and mine blasting projects without marsh gas and mineral dust explosion risk.
适用于无沼气或矿尘爆炸危险的爆破工程和露天爆破工程。
Suitable for outdoor blasting and mine blasting projects without marsh gas and mineral dust explosion risk.
适用于无沼气或矿尘爆炸危险的爆破工程和露天爆破工程。
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