Open AccessModeling the axially symmetric fracture evolution in deep-hole blasting
Author(s) -
Eran Sher
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/523/1/012008
Subject(s) - axial symmetry , rock blasting , ultimate tensile strength , brittleness , fracture (geology) , charge (physics) , geology , materials science , geotechnical engineering , structural engineering , physics , composite material , engineering , quantum mechanics
When blasting deep-hole charges in a brittle rock mass, rock disintegration mainly proceeds due to development of radial fractures induced by dramatic tensile azimuthal stresses in the vicinity of a charge and along its surface. Coincidently, appreciable tensile stresses are generated by blasting nearby ends of deep charges along their axes. Such stresses can initiate a rise and development of axially symmetric fractures. In the present paper the computational model is set forth for development of axially symmetric fractures nearby free surface in the vicinity of a charge end. Calculations of a fracture shape and size are reported.