Gas Draining Experiments in Super Gassy Mine in Huaibei Coal-Mining Area

摘要

Gas draining experiments are held in Luling coal mine, Huaibei Coalfield which coal seams' gas content is the most affluent in eastern China. The relationship between the effects of gas release drainage at working faces and engineering factors such as suitable duration of pre-drainage, bore-hole spacing, drainage vacuum pressure and the size of the bores is analyzed, respectively, based on the in-situ test data. The mine's gas drainage parameters are proposed.