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Effect of rock mass quality on construction time in a road tunnel

โœ Scribed by Yangkyun Kim; Amund Bruland

Book ID
108290387
Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
984 KB
Volume
24
Category
Article
ISSN
0886-7798

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On the influence of rock mass quality on
On the influence of rock mass quality on the quality of blasting work in tunnel driving
โœ N. Innaurato; R. Mancini; M. Cardu ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 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