Experimental investigation of crack formation in rock mass under impact fracture by a hard indenter

Challenges for Development in Mining Science and Mining Industry

Gorodilov, L.V.^1 ; Efimov, V.P.^1

Chinakal Institute of Mining, Siberian Branch Russian, Academy of Sciences, Novosibirsk, Russia^1

关键词: Drill core;    Experimental investigations;    Impact craters;    Impact fracture;    Main crack;    Marble blocks;    Rock fractures;    Steel tools;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012023/pdf
DOI  :  10.1088/1755-1315/262/1/012023

来源: IOP

【 摘 要 】

The technique for determining geometric parameters of cracks formed in rock mass under penetration of a hard tool is presented. The results of rock fracture as impact craters and main cracks formed in a marble block after penetration of a wedge-shaped steel tool are discussed. The photographs of the craters and polished sections of drill cores are given.