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Question:

Why did the Anping platform mean that the work surface could be mined?

Why did the Anping platform mean that the work surface could be mined?

Answer:

The main drawback of the backward mining is the large amount of the initial project, the construction period is long and the production is slow. Progressive mining is the opposite of reverse mining.
The backward mining can find out the change of the geological conditions and the characteristics of the coal seam within the whole mining area through the roadway, which is beneficial to the mining preparation, and the mutual interference between mining and excavation is small, and the roadway maintenance condition is good.
Coal seam along the direction of the mining order forward and backward. In the field within the field, to the wellbore as a benchmark, from the wellbore to the border in advance of the forward type, and vice versa called back. In the mining area, the working surface from the upper (lower) mountain to the boundary to promote the district forward, on the contrary called the district back type.

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