1 |
Sivilingenier Oystein H. Storme, 1982, 'Tunnel Break Through Beneath 85m Water at Ringedalsvatn' in Norwegian Tunnelling Technology, Norwegian Soil and Rock Engineering Association. pp.53-55
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2 |
O. solvik, 1982, Underwater piercing of a tunnel, In: Norwegian Hydropower Tunnelling. NSREA, pp111 -114
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3 |
Bjorn Buen, 1988, 'Lake Taps', in Norwegian Tunnelling Technology, Norwegian Soil and Rock Engineering Association, pp. 91-92
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4 |
B.Bardal, et. al, 1982, Lake tap-the Norwegian method. In: Norwegian Hydropower Tunnelling. NSREA. pp. 115-119
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5 |
Oddbjom Aasen, 1988, 'Rock Grouting', in Norwegian Tunnelling Technology, Norwegian Soil and Rock Engineering Association, pp. 103-105
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