PROCESS OF ERECTION OF ROOF BOLTING Russian patent published in 2000 - IPC

FIELD: mining industry. SUBSTANCE: process includes simultaneous drilling of rock holes and erection of roof bolting with use of hollow rod with expendable cutting tool at front end, with forms or plate and nut. Then binder with hardening accelerator is fed into space of rod. Rock hole is washed simultaneously with drilling of rock hole and erection of roof bolting, then supply of water is stopped and pumping plant with vessels containing needed resins and binder with hardening accelerator is switched on. Fixing of rod, filling of cracks in rock mass, impregnation of rock mass and application of binder with hardening accelerator on roof and sides of working are carried out at same time. EFFECT: reduced time of support of working with use of roof bolting and binder with hardening accelerator. 1 dwg