Experimental designs of a combined tool using superhard composite materials for effective destruction of mine rocks

Influence of pick blunting on hydraulic breaker capacity in fracture of granite blocks

“…A. Khoreshok et al [39], W. R. Wayment [33], Aksoy [40][41][42] and by many others. These scientists and the followers [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] developed a mathematical description of the process of impact tool penetration in rocks, estimated the energy intake of the fracture process and the capacity of percussive machines. At the same time, the influence of the degree of the impact tool blunting on the blow parameters during the tool operation lacks proper consideration.…”

Modeling impact fracture of rock by hydraulic hammer pick with regard to its bluntness

“…The theoretical framework of the impact destruction of rocks is described by both Russian and foreign scientists [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Penetration of an impact tool in rocks is modeled mathematically, and the energy input of rock fracture and the impact machine capacity are estimated [34][35][36]. In the meanwhile, the influence of the impact tool blunting on the impact efficiency lacks proper attention.…”