Vung Mountain Tunnel on Cam Lam - Vinh Hao Expressway through Ninh Thuan province was broken through both tunnels.
On August 26, Cam Lam - Vinh Hao BOT Joint Stock Company and Deoca Group held a ceremony to break through the Nui Vung tunnel, the longest on the North-South expressway.
Pressing the explosion button.
Nui Vung tunnel, constructed using the NATM method, is 2.2km long and is known for its flexibility and safety compared to traditional tunneling technologies. This method has also been applied successfully in other tunnels, including Deo Ca, Co Ma, Cu Mong, Hai Van, Thung Thi, and Quang Ninh coastal tunnels.
According to Mr. Dang Tien Thang, Deputy Director of Cam Lam - Vinh Hao Joint Stock Company, the south of the tunnel encountered a weak geological zone, different from the approved design documents.
Bustling vehicles and construction equipment in Vung mountain tunnel.
To tackle this, Deoca Group quickly sought experts' advice, reinforced the supporting structure, implemented inverted arches, and increased work capacity by operating 3 shifts/day, including holidays and Tet.
With accurate coordination, two excavations from the north and south have merged, marking a significant milestone towards completing the project before April 30, 2024.
With accurate coordination, two excavations from the north and south have merged, marking a significant milestone towards completing the project before April 30, 2024.
Previously, in early July, the left branch of the Vung Mountain tunnel was connected. Cam Lam - Vinh Hao Expressway is one of three North - South expressway projects phase 1 implemented according to the public-private partnership (PPP) method.
Thi công đường dẫn phía nam hầm núi Vung.
By the end of December 2023, the 21km section of Cam Lam - Vinh Hao expressway (from Km92 - Phan Rang intersection to Km113 - intersection with Provincial Road 709) is expected to open for circulation.
The expressway has a total length of 78.5 km, passing through Khanh Hoa (5 km), Ninh Thuan (63 km), and Binh Thuan (12 km), and is being invested by Deoca-194 consortium.
The completion date for the entire route is expected to be April 30, 2024, with the Vung Mountain tunnel designed for a speed of 80 km/h.
BY VINH PHU
