ISBN: 9787560754390 - 厚煤层开采煤炭资源回收率合理性评价与应用 (1 Ergebnisse)

paperback. Zustand: New. Paperback. Pub Date: 2015-12-01 Pages: 192 Language: Chinese Publisher: Shandong University Press. Thick Coal Seam Coal Resource Assessment and Application of reasonable recovery study author from rationality connotations recovery of coal resources. in order to currently the larger mining thick coal seam as the main object of study. analyzes the main technical thick seam mining. the main problems under special geological conditions. especially irregular thick seam mining of coal recovery meth.…