Conclusion
Experiments confirmed the unconditional expedience of using paired 150-mm-diameter holes when blasting rocks of the V–VIII strength group under exposed-surface conditions for cuts up to 10–15 m deep.
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Literature Cited
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Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 9, pp. 42–43, September, 1975.
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Vasil'chenko, V.I., Glushkov, M.L. Use of paired holes in drilling and blasting operations during construction of the Irtysh-Karaganda canal. Hydrotechnical Construction 9, 879–881 (1975). https://doi.org/10.1007/BF02379492
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DOI: https://doi.org/10.1007/BF02379492