EXPERIMENTAL STUDY OF SAFELY BLASTING TECHNOLOGY AT THE SHIELD SUPPORTS FACE

Through improving blasting technology and optimizing blasting parameters in the steep coal seam at Kongli coal mine in HuaiNan Mining Group company at the flexible shield supports face.The problems that the shield supports are jammed by blasted coals and that gas is accumulated at working face are solved.The probability of security is increased,and much instructive experience is provided for Kongli coal mine's and the similar working faces.