Warmly celebrate, after we was a ventilation ducting supplier to Three Gorges Projects, our company has become ventilation ducting supplier for the world’s longest sea-crossing bridge 【Hong Kong-Zhuhai-Macao Bridge】sub-sea tunnel.
The under construction 【Hong Kong-Zhuhai-Macao bridge】is an extra-large sea-crossing channel, which connect Hong Kong, Zhuhai and Macao. It integrates bridge, island and tunnel with the total length of 55 km, it’s not only the world’s longest sea-crossing bridge, but also the world’s longest immersed tube tunnel.
The sea-crossing bridge has the longest mileage, the most investment, the most difficult construction technology in china’s construction history.
The construction began on December 15, 2009. The total length of the bridge engineering is about 55km, including the bridge and tunnel main project in the sea: Three ports of Hong Kong, Zhuhai and Macao, Three connection Line of Hong Kong, Zhuhai and Macao. Among them, the largest of quantities, the most technically complicated is the main project of Bridge-Island-Tunnel cluster, which is about 29.6km long. It contains the nearly 6.7km immersed tube tunnel and the nearly 22.9km sea-crossing bridge, In order to realize the transformation between bridge and tunnel, the artificial islands in the sea is under construction.
The immersed tube tunnel installation of 【Hong Kong-Zhuhai-Macao Bridge】 is a key of success or failure in the whole project. Currently immersed tube tunnel has completed 25 pipe joint installation, and ready to install 26th pipe joint. Afterwards, the most difficult challenge will be the installation of curve immersed tube and tunnel end joint. At present, more than 200 joints immersed tube tunnel of【Hong Kong-Zhuhai-Macao Bridge】will be impermeable, which lies in the international leading level.
SL|Tech. ventilation ducting have positive flow ducting and negative flow ducting. Positive flow ducting includes lay flat ducting, spiral ducting and special sharp ducting, its diameter can be made from 150mm to 3000mm and its length from 10m to 500m. Negative flow ducting also called flexible ventilation ducting, its diameter can be made from 300mm to 2000mm, its length from 10m to 50m, and its spiral wire pitch from 50mm to 300mm. Every two sections are connected with industrial zipper or end coil. We believe that SL|Tech. ventilation ducting supplier is a good choice for all kinds of infrastructure construction projects.