Overcoming difficulties due to weather and a storm of material prices, Thung Thi tunnel construction on the Mai Son - National Highway 45 is crossing the finish line.
Information about the construction progress, the representative of the management board of the Thung Thi tunnel said that up to now, the output of Thung Thi tunnel had reached 466/591 billion, reaching 80%, exceeding 10% of the plan.
Currently, the right branch of Thung Thi tunnel has completed the construction of the tunnel cover and is in the process of implementing the basement concrete. Meanwhile, the left tunnel branch is being constructed as the last open tunnel part, and the construction of crushed stone reinforces the basement cement.
In particular, the concrete foundation of the right tunnel branch has been constructed since September 17, divided into three construction lanes. Up to now, a concrete foundation has been constructed 320m. The average construction is 240m/lane per day. The concreting road foundation of the right branch tunnel is expected to be completed on September 30, 2022.
Up to now, that of the right branch of the Thung Thi tunnel has reached about 320m and is expected to be completed in September 2022.
"For the left branch of the Thung Thi tunnel, the CTB layer of the foundation is constructed. It is expected that the road foundation concrete will be started on October 5, 2022. The entire tunnel will be completed by the end of October 2022". The representative of Thung Thi tunnel's BOM, more than 300 engineers and workers were mobilized and organized into eight construction projects. on the construction site. The construction period lasted three consecutive shifts.
The concrete construction of the road foundation is divided into three lanes. On average, the construction workers can do 240m2/lane per day.
"During the construction process, Deo Ca Group faced many difficulties, such as the subcontractor's construction delays. The rock after blasting is not fully utilized according to the estimate, leading to waste transportation and disposal problems. The dossier of material mines, reserves, and mining conditions have changed compared to reality; Material prices escalated, and supply was scarce, while the announcement of prices and local price indexes were not consistent with the actual fluctuations of the market, only partially meeting (50%).
However, with the high determination efforts of the project management board, they have gradually overcome the bottlenecks, sped up the progress, ensured the set plan, and strived to make Thung Thi tunnel one of the most successful projects in the world. The earliest destination at the Mai Son component project - QL45", a representative of the Management Board shared.
On September 24, 2022, Mr. Ho Minh Hoang, Chairman of the Board of Directors of Deo Ca Group, and some partners had a working session to check the construction progress of the Thung Thi tunnel - the largest tunnel project in the North Expressway project. - South section of Mai Son - National Highway 45. In the photo, Mr. Hoang gives gifts to encourage the working spirit of more than 300 engineers and workers at the Thung Thi tunnel project.
By design, the Thung Thi tunnel has a length of 680m, including two tunnels. The tunnel is constructed by the NATM method, a permanent construction with three lanes for motor vehicles and one lane for pedestrians, fully equipped with lighting and ventilation systems. The total investment of the Thung Thi tunnel is 672 billion VND.
BY NAM KHANH
