Method for blasting rock
Method of blasting rock to attain a predetermined fracture result. The necessary energy for the blasting is provided at an amount and in an application which is decided by calculating the stresses with regard to previously plotted blasting effects and to a previously prepared description of the rock structure.
Description
Patent History
Patent number: T101301
Type: Grant
Filed: Sep 2, 1979
Date of Patent: Dec 1, 1981
Inventors: Per-Anders Persson (S-117 48 Stockholm), Roger Holmberg (S-140 41 Sorunda), Gunnar Nord (S-191 44 Sollentuna)
Application Number: 6/154,420
Type: Grant
Filed: Sep 2, 1979
Date of Patent: Dec 1, 1981
Inventors: Per-Anders Persson (S-117 48 Stockholm), Roger Holmberg (S-140 41 Sorunda), Gunnar Nord (S-191 44 Sollentuna)
Application Number: 6/154,420
Classifications
