- Apr 15, 2016 -
Section 321 provides that: within a low gas mine into the wind (Total pressure ventilation) main haulage tunnel, overhead line electric locomotive can be used, but must use the roadway incombustible support.
Provided with high-gas coal mine air intake (Total pressure ventilation) main haulage tunnel overhead line electric car, you must comply with the following provisions:
1) or through the seam along the seam roadway must Arching or bolting and shotcrete lining.
2) Gas Emission back laneway airflow shall enter overhead line electric locomotive in the roadway.
3) use of carbon slide or other circuit can be reduced spark set.