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ybb165 6 ge bao xing yi bu dian dong ji
Author(s): 
Pages: 38-40
Year: Issue:  12
Journal: Machinery

Abstract: <正> 注水采煤(在采煤前对煤层进行高压注水)是煤炭工业战线的一项新工艺,可把煤层中的大部分瓦斯排出,可大大减少采煤中的粉尘,有利于安全生产和降低矽肺病的发病率。由于原5D-2/150煤层注水泵上防爆电机BJO262—6笨重庞大,煤
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