Abstract:Great height, super long workface mining is the trend of coal mining in China. By increasing workface length, mining efficiency can be improved as the number of equipment turnarounds and losses from coal pillars are reduced. The essay is a case study of the super long workface mining at Wangzhuang Coal Mine. To reveal the mechanism of ground pressure occurrence and understand the parameters of the equipment running at the workface, a systemic study was carried out on the theories and technologies of great height, super long workface mining. The pressure patterns at super long workfaces were determined, and the mining equipment and processes were analyzed, forming a system of theories and technologies for great height, super long workface mining. The practice of the theories and technologies achieved great safety and efficiency, providing a good reference for future promotion.
