What is the difference between underground transportation and rail transportation in coal mines? How do they define each other?

Coal mine underground transportation uphill: the main function of roadway is to transport raw coal, that is, belt transportation roadway. As for uphill, that is to say, the layout of the roadway is uphill, which is also the saying "uphill roadway"

It is not difficult to understand that the track goes up the mountain. He is from the track lane, mainly responsible for transporting materials and large equipment.

The names of these two roadways refer to the main roadway in the mining area, not the gateway of a working face.