Abstract:

Results of no-pillar mining technology in the longwall I-10-9 Khe Cham I area Ha Long Coal Company has kept more than 500 meters along the maingate to use as a tailgate for the lower longwall, taking advantage of coal reserves in the pillar, saving production costs. At the same time, it saves resources and reduces costs when exploiting medium-thick, gently sloping coal seams at Ha Long Coal Company. In the article, the authors present the research and experimental application technology; synthesize and evaluate some results achieved in practice to further improve and apply technology in other longwalls with the same geological and technical conditions in the Khe Cham I area; Ha Long Coal Company