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Effects of joint orientation and rock mass quality on tunnel blasting

โœ Scribed by A.K. Chakraborty; J.L. Jethwa; A.G. Paithankar

Book ID
107753030
Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
760 KB
Volume
37
Category
Article
ISSN
0013-7952

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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