UNDERGROUND MINERAL MINING METHOD Russian patent published in 2007 - IPC E21C41/18 E21C41/20 

FIELD: mining, particularly underground mining of flat-lying mineral seams in areas characterized by disjunctive geological displacement.

SUBSTANCE: method involves dividing mineral seam into columns; preparing the columns by paired developing entries along with mineral pillars establishing between the developing entries; excavating supplementary entries between developing ones; cutting the columns with long-wall faces with the use of powered mining complexes; gobbing developing entry adjoining long-wall face behind long-wall face during column cutting and repeatedly using the second development entry. The columns are arranged along geological displacement areas. Developing entry to be gobbed during column cutting and reusable one are formed from opposite geological displacement sides out of zone having increased fissure density developed near geological displacement. As mineral seam zone characterized by fold geological displacement is cut reusable development entry is excavated in hanging wall. As mineral seam zone characterized by overfold geological displacement is excavated reusable developing entry is cut in underside wall of overfold displacement.

EFFECT: increased mining safety and decreased coal losses.

4 dwg