This innovational device could be used to block up the respirable dust produced in the process of coal mining to diffuse to the operators? working area.

• 此革新装置的原理和作用是以形成透明的“空气幕墙”将采煤司机工作区与采煤机截煤区分隔,阻止呼吸性粉尘向司机处扩散。