Application of and Economical Analysis on Tunnel Excavation by Hydraulic Rock Drilling Jumbos

doi:10.3973/j.issn.1672-741X.2012.04.004

Tunnel Construction ›› 2012, Vol. 32 ›› Issue (4): 454-458.DOI: 10.3973/j.issn.1672-741X.2012.04.004

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Application of and Economical Analysis on Tunnel Excavation by Hydraulic Rock Drilling Jumbos

WEI Zhihong

(China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China)

Received:2012-04-19 Revised:2012-06-20 Online:2012-08-20 Published:2012-10-16

Abstract

Abstract: The key points of the application of and economical analysis on tunnel excavation by hydraulic rock drilling jumbos are discussed. The causes for the overbreak induced by hydraulic rock drilling jumbos and the collection of the basic data needed for economic analysis are presented and analyzed. The analysis results show that hydraulic rock drilling jumbos are suitable, rational and economical for the excavation of long railway tunnels.

Key words: long railway tunnel, hydraulic rock drilling jumbo, excavation technology, economical analysis

WEI Zhihong. Application of and Economical Analysis on Tunnel Excavation by Hydraulic Rock Drilling Jumbos[J]. Tunnel Construction, 2012, 32(4): 454-458.

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Application of and Economical Analysis on Tunnel Excavation by Hydraulic Rock Drilling Jumbos

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