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China: World's first extra long, ultra wide Shenzhen-Zhongshan immersed Tunnel Project use satellites for precision construction
Shenzhen-Zhongshan Tunnel Project is 6.8 kilometers long immersed tunnel construction. It has 32 pipe sections. Each immersed pipe section weighs 80,000 tons. 160 meters long, 46 meters wide and 10 meters high.
In installation of each section, even 5 cm deviation is not acceptable. Engineers use 56 Beidou navigation system satellites for precision installation.
http://big5.news.cn/gate/big5/www.news.cn/fortune/2023-10/31/c_1129949453.htm
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.veier24.no/artikler/e6-ranheim-vaernes-nye-veier-har-tildelt-hastekontrakter-pa-80-mill/538369
Nye Veier vil tildele hastekontrakter på 80 mill for E6 Ranheim-Værnes
www.veier24.noFire små delkontrakter må gjøres ferdig nå. Brødrene Bjerkeli og Grunnarbeid Entreprenør får trolig oppdrag på til sammen 80 millioner kroner.