截割深度与产生煤尘之间的相互关系在实验室内已证实,在美国和国外试验埸亦已有实施。本文将讨论最近在美国一长壁面结合深截和慢截的试验证明:从长壁采煤产生的呼吸性煤尘,只要增加机组截深,就可以显著减少,而不影响其产量。该试验方案是在煤炭局煤矿卫生和安全 The correlation between the depth of cut and the generation of coal dust has been demonstrated in the laboratory and has also been implemented in the United States and abroad. This article will discuss the recent experiments with deep and slow truncation on a long wall in the United States that demonstrate that respirable coal dust produced from longwall coal mining can be significantly reduced without increasing its production by increasing the unit cut-off. The test program is at the Coal Bureau of Coal Mine Health and Safety