Improvement of mining technology for the longwall -170/ -100 m in Seam H10 at East Wing of Mong Duong coal mine

Abstract

The coal production of the longwall -170/ -100 m in the seam H10 at the East wing of Mong Duong coal mine has basically reached the designed capacity. Because the mining technology layout of this longwall was designed with only one raise in coal for travel and with one group of workers, this layout cannot fulfil the requirement of increasing production of the mine. The production organization and labour arrangement of the layout face difficulty, cause considerable time for performing a production cycle and constrain productivity. Through a field study at the mine, the authors propose a solution for improvement of mining technology layout of the longwall. That is, another raise in coal and a second group of workers are added to the current layout. The associated production organization chart has been accordingly revised. The calculation results show that the production cycle time is decreased, and the productivity is increased. The research results from the paper are important and necessary for Mong Duong coal mine as they form the basis for increase of coal production and labour productivity at the longwall -170/ -130 m