Abstract:

Based on geological conditions of Bac Coc Sau coal mine- Ha Long coal company-TKV, the distance from surface coal seams is relatively close to the terrain. There are many variables of complex geology in the rocks surrounding the coal seams. Therefore, water from the surface and underground water easily penetrates into the mining area and effects on the support of the tunnels to cause unsafe in production and reduced labor productivity. This article analyzes the cause of water flowing into the long wall -35/+0 in seams 12, Bac Coc Sau coal mine and assesses the impact of water to mining work (its influence to: support of long wall, transport operations, drilling and blasting, the organization of production, mining productivity). From analysis and assessment, the solutions are proposed to minimize the impact of water to mining, raising labor productivity and ensure safety.