Designing a final wall blast to improve stability

Savely, J. P.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 9
Publication Date: Jan 1, 1987
This paper describes the development of a trim blast design to improve the stability of a final pit wall. Description is given of the effects of rock characteristics, rock type, and pit plans on the blast design. Currently, six benches have been mined with trim blasting. A more stable final wall has resulted and the successful program has reduced mining costs over an extended time period. Low-cost blast monitoring and field observation were used to determine peak particle velocity and blast damage. Using criteria developed from this relationship, trim blasts were designed and evaluated.
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