A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Drinking water supply tunnels in Crown Colony of Hong Kong
10 km long main tunnel of Plover-Cove water supply project is excavated in volcanic rock and has horseshoe-form cross section with height at arch key varying between 9 and 10 m; following blasting and clearing of each 4.2-m long section, 2 to 3 cm thick shotcrete layer was applied to walls as temporary support, using Swedish "Robot Spray" truck-mounted equipment; 15 to 20 cm thick final lining was cast in-situ with aid of concrete pumps; total time of drilling, blasting, shotcreting, and preparation for next sequence of operations was 20 hr.
Drinking water supply tunnels in Crown Colony of Hong Kong
10 km long main tunnel of Plover-Cove water supply project is excavated in volcanic rock and has horseshoe-form cross section with height at arch key varying between 9 and 10 m; following blasting and clearing of each 4.2-m long section, 2 to 3 cm thick shotcrete layer was applied to walls as temporary support, using Swedish "Robot Spray" truck-mounted equipment; 15 to 20 cm thick final lining was cast in-situ with aid of concrete pumps; total time of drilling, blasting, shotcreting, and preparation for next sequence of operations was 20 hr.
Drinking water supply tunnels in Crown Colony of Hong Kong
Galeries pour l'alimentation en eau potable de la colonie de Hong-Kong
Ellstrom, N. (author)
1967
6 pages
Article (Journal)
French
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