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煤体予先润湿的方法是各矿井采煤时普遍推广的一种降低煤尘生成量的主要方法。 目前,在需要水力处理的煤层中,有90％的回采工作面采用煤层注液的方法进行处理。 煤层注液有两种工艺方法:通过由准备巷道所打的钻孔进行注液;通过由工作面所打的钻孔进行注液。 第一种煤层予防处理方法应用的比较
The pre-wetting method of coal is the main method to reduce the coal dust generation when it is generally promoted in coal mines. At present, 90% of the coal faces that require hydraulic treatment are treated with coal seam injection. There are two processes for injecting coal into the seam: pouring through the hole drilled by the preparation of the roadway; pouring through the hole drilled in the face. The first application of coal seam to prevent the method of comparison