Abstract:

Mine pressure control method in underground technology is an important and complicated step in the coal mining process. The basis for selecting of mine pressure control method is a stability, disturbed characteristics, and collapse mechanism of the direct and basic roof rock in mining face areas. The authors have analyzed methods for classification roof abroad, classification roofs in Quang Ninh underground coal seams region and chosen the method of VNIMI Institute (Russia) for mine pressure control. The results of classification of roof rock show that most of the roofs in Quang Ninh coal area in the mining plan to 2025 year of Vietnam National Coal-Mineral Industries Holding Corporation Limited are relatively difficult to control, so that have to apply special technology solutions to strengthen or to weaken mine rock massive.