A Novel Mining Method for Longwall Panel Face Passing through Parallel Abandoned Roadways

Figure 3

Passing through the PAR. (a) Advancing of the head and the end of shears and scrapers. (b) Adding scrapers and shears in the end of panel. (c) Adding scrapers and shears in the head of panel. (d) End of “swing-inclined” mining.

(a)

(b)

(c)

(d)