ARRANGEMENT FOR DEFINITION OF DURABILITY OF ROCKS IN A MASSIF

摘要

FIELD: the arrangement for definition of durability of rocks in a massif refers to mining industry and designed for definition of durability of rocks in a massif.;SUBSTANCE: the arrangement for definition of durability of rocks in a massif has a screw oil-rig bar with a cutter, a mechanism of rotation and feeding on the face of a bore-hole having a chuck whose rotation is transmitted with a thrust bushing on a running nut, traveling along the central screw and creating feed of an effort registered with a measuring unit on the cutter. The measuring unit has a dynamometer of high sensitiveness installed in the iron ring with guides. At that the iron ring with rings is fastened with a clamp to the supporting bar. For fixing the arrangement with the massif two parallel tie-rods are applied fastened to the anchors with the aid of locking bolts regulating distance between the supporting bar and the massif.;EFFECT: expands diapason due to possibility to define durability of very soft rocks.;1 dwg