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第二讲 矿用炸药 井巷工程中大都采用矿用炸药。根据岩石硬度不同,需要选用威力和猛度不同的矿用炸药,在有瓦斯煤尘危险的井下工作面对炸药又有特定要求,在有水工作面,要求炸药有一定抗水性。 我国矿用炸药是以硝酸铵系列为主的铵梯炸药和含水炸药。从使用条件分为煤矿许用炸药和非安全炸药。非安全炸药又分为露天炸药和井下使用的岩石炸药。按组成,硝酸铵系列非安全炸药又分为铵梯炸药、廉价炸药和高威力炸药。
Lecture 2 mine explosives and roadway projects are mostly used in mining explosives. According to the different rock hardness, the need to use the power and blasting different mining explosives, there is a danger of gas coal dust in the face underground work have specific requirements of explosives, in the face with water, explosives require a certain degree of water resistance. Mine explosives in our country are based on ammonium nitrate series of ammonium ladder explosives and water explosives. From the conditions of use is divided into coal mine permit explosives and non-safety explosives. Unsafe explosives are divided into open-air explosives and rock explosives used underground. By composition, ammonium nitrate series of non-safety explosives are divided into ammonium ladder explosives, cheap explosives and high-power explosives.