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Peripheral blasting in the driving of the hydraulic tunnels

✍ Scribed by S. A. Davydov

Publisher
Springer
Year
1969
Tongue
English
Weight
136 KB
Volume
3
Category
Article
ISSN
1570-1468

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πŸ“œ SIMILAR VOLUMES

On the influence of rock mass quality on
On the influence of rock mass quality on the quality of blasting work in tunnel driving
✍ N. Innaurato; R. Mancini; M. Cardu πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 881 KB

After defining the parameters describing the quality of blasts in tunnel driving--the pull efficiency, the overbreak and the HCF factor (the ratio of thee observe length of half cast on the tunnel wall to the total drilled length of the contour holes) --the paper examines the influence of the qualit