Coal roadway, rock roadway and semi coal rock roadway is how to divide
Two, half coal rock roadway: if the roadway section, the coal seam accounted for more than 1/5 and less than 4/5, known as the half coal lane;Three, rock lane, if the roadway section, the rock accounted for more than 4/5, known as rock lane. In order to coal mining, ventilation and other channels to dig, take out the media, rocks are, the majority of rock, the media is relatively small. .
Coal roadway, rock roadway and semi coal rock roadway:First, the coal lane: if the roadway section, the coal seam accounted for more than 4/5, known as the coal lane; specifically for coal mining and excavation of the roadway.
The rock half rock roadway between 1/5 to 4/5 gross section rock roadway, roadway section accounted for more than 4/5 full wool rock roadway, quoted by Ban Yan, coal, and tunnel geological sketch map collection.
