Under the sea in Norway

被引：0

作者：

Palmstrom, Arild ^{[1
]}

Naas, Rolf ^{[1
]}

机构：

[1] Norwegian Geotechnical Inst, Oslo, Norway

来源：

World Tunnelling | 1995年 / 8卷 / 09期

关键词：

Fibre-reinforced shotcrete - Refraction seismic measurement - Road tunnel - Rock bolts - Subsea tunnel - Water sealing;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The methods for constructing subsea tunnels in Norway are reviewed. All Norwegian subsea tunnels have been excavated by drill-and-blast and have achieved an average advance rate of 40-80 m-week. The total construction cost of a subsea road tunnel amounts to $4,500-10,000/m of tunnel, of which the excavation part (drill, blast and mucking out) constitutes about $1,500/m. The rock supporting works, which are designed for the rock-mass conditions encountered in the tunnel, mainly consist of fiber-reinforced shotcrete and rock bolts. The permanent water leakage amounts to 0.1-0.45 m3/min/km of tunnel.

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