ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2007, Vol. 27 ›› Issue (1): 62-64.DOI: B
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XIONG Chao-Dong
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Abstract:
Blast is the leading sequence of tunnel excavation and progress and cost are a pair of interactive factors of tunneling. In this article, the achievable pullout length under restricted charge weight per delay is verified and the reasonable drill hole numbers and explosives to be charged for a certain pullout Length are also discussed. This article is aimed at drawing the attention of the technical persons in the field of tunneling to the importance of study on pullout length and powder factor.
CLC Number:
U455
XIONG Chao-Dong. Discussions on Pullout Length and Powder Factor of Drill+blast Tunnel[J]. Tunnel Construction, 2007, 27(1): 62-64.
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