The picture shows the deep and medium tunnel project
As a key project of the national 13th Five-Year Plan, the shenzhen-zhongshan channel has attracted countless attention since its inception, because it will fill the gap in many domestic infrastructure fields, and it is a set of tunnels, islands, bridges, underwater as a whole, the world's first two-way eight-lane steel shell concrete immersed tube tunnel, the project also includes the construction of a full offshore water suspension bridge, so it has become the world's most difficult cross-sea cluster super large project, recently the deep and medium channel has made a major breakthrough, to achieve the E29 pipe section of the millimeter-level precision docking, For this century project with a huge difficulty coefficient, foreigners all sighed: It is inconceivable that China has done it.
The total length of the deep submarine channel is about 6800 meters, the immersed pipe part is about 5000 meters, and it is composed of 32 pipe joints and 1 final joint under the sea, which constitutes the world's widest underwater 8 channel tunnel project, the length of this E29 pipe joint is about 123.8 meters, the widest pipe joint reaches 49.75 meters, and the total mass after pouring is 64,000 tons, because of the special material structure, so under the corrosion of seawater, it can maintain the structure for many years, the material is thick and durable, and the deep tunnel has the ability to resist seismic waves.
Under the traction of 9 tugboats with a total horsepower of 44,000 horses of guangzhou salvage bureau, E29 pipe sections departed from guangzhou Nanshalong Cave Harbor Pond, and successfully carried out the docking project of pipe joints in the busiest waterway across the Pearl River estuary, in order to ensure the accurate docking of each section of pipeline under the sea, experts from Tianjin Institute of Water Transport Engineering Science participated in the tunnel construction process, carrying a variety of multi-million-priced advanced electronic equipment, through the strict calculation of the software system, in two-dimensional and three-dimensional form to show the process of immersed pipe in real time.
After the completion of the Shenzhen-Zhongshan Tunnel, it will become another super sea-crossing project that attracts global attention after the Hong Kong-Zhuhai-Macao Bridge in China, and it is expected that the Deep-China Sea Tunnel will be opened to traffic in 2024, when the journey from Shenzhen to Zhongshan City, Guangdong Province, will be shortened from the original more than 1 hour to 20 minutes, which will directly drive the economic development speed of the neighboring city of Zhongshan, and after the shortening of the distance between Shenzhen and Zhongshan City, it will also help alleviate the pressure of the foreign population in Shenzhen, so the economy of Zhongshan City is bound to take off rapidly in the future.
Every infrastructure project in the country, never put the cost first, but will take the construction of people's livelihood as a priority, infrastructure construction includes roads, railways, bridges and power grids, whether a country's development potential is huge, we must see whether the infrastructure is perfect, want to be rich, first build roads, only the convenience of the transportation network and the abundant supply of electricity, in order to let the economy and population radiate to these areas, on the contrary, the more inconvenient the transportation, the economy and population will be difficult to drive up.
The construction of the deep and middle sea tunnel project, but also includes the construction of a large artificial island, the current artificial island main building has been completed, only took four and a half months to complete the rapid construction of artificial island world record, for the project supporting the construction of the Lingling Yang Bridge, after completion will be the world's largest span offshore sea three-span suspension system suspension bridge, the entire project broke a number of world records, such a majestic infrastructure project, reflects the strength of the country's overall strength, as well as the idea of building for the well-being of the people's livelihood, Therefore, everyone should be proud, if the miracle has color, then it must be Chinese red.