They work with remote control devices that change the direction, position and speed of a German-made cuttingmachine that slices back and forth along a 300-metre-wide coal face.
On-way distribution of dust in the full face mining was researched during the process of coal mining machinecutting coal.
研究采煤机在割煤落煤过程中，粉尘在综采工作面的沿程分布情况。
3
This paper analyzes the structure and characteristic of mini spiral face impeller, and introduces a new method by the use of milling machine and special cutting tool.