Bolting of mining roadway for fully mechanized sublevel caving has been practised successfully in Hebi mining area. It provides a new method for roadway support
The designing method and the supporting mechanism of both bolt and small cable anchor for full-seam roadway in the weaker thick coal seam are systematically ana
According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of ph
Analysed and summarized the dynamics and chemical factors in the co (coagulation)-flocculation process. A completely new definition for co-flocculation was give