China-Laos Railway Project Pushes through Tunnel

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The Dalong No. 2 tunnel of the China-Laos Railway, being built by Sinohydro Bureau 3 Co, a subsidiary of POWERCHINA, was recently drilled through. This is the third tunnel to complete drilling during the COVID-19 pandemic. The tunnel, located in the Luang Prabang Province in Laos, has a design speed of 160 kilometers per hour and is 2,321 meters long. Officials said the tunnel area is a structurally eroded alpine landform with large terrain relief and a relative height difference of more than 100 meters. The lithology is mainly carboniferous slate with sandstone, marlstone and limestone slate, which developed joint … Read more

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PORR Consortium to Build Tunnel in Poland

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ŚWINOUJŚCIE, Poland; VIENNA, Austria – The contract for the construction of the Świnoujście tunnel was recently signed. The project will be implemented by a consortium consisting of PORR, Gulermak and Energopol-Szczecin. The contract value is around EUR 150 million and the project is expected to take 48 months to complete. The total length of the project is approximately 3.2 kilometers. This includes a 1.44-kilometer tunnel boring machine excavation in the slurry shield procedure. The breakout diameter of the tunnel will be 13.5 meters. A two-way roadway will be constructed with traffic lanes with a width of 3.5 meters and evacuation … Read more

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