Construction of Than Vu tunnel on North-South expressway continues day and night
(Baonghean.vn) - Than Vu Tunnel is one of the most difficult sections on the North-South Expressway due to its long length and high mountain pass. Taking advantage of favorable weather, construction units are working in three shifts to complete this important section soon.
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The Than Vu road tunnel in Dien Phu is 1,280m long, passing through Than Vu mountain to connect Dien Phu commune, Dien Chau district and Nghi Dong commune, Nghi Loc district (both in Nghe An province). Photo: Tran Chau |
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This is one of the most difficult items on the North-South Expressway through Dien Chau - Bai Vot. Therefore, the construction unit must work hard to meet the schedule. Currently, Hoa Hiep Company Limited has mobilized more than 200 people including experienced engineers and skilled workers from corporations to carry out the work. In addition, it mobilized 4 modern tunnel boring systems, dozens of concrete spraying machines, loaders, excavators and worked in three shifts continuously. Photo: Tran Chau |
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To ensure working conditions for engineers and workers, companies must continuously pump oxygen into the tunnel. Photo: Tran Chau |
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Mr. Dao Van Thong, from Do Luong, who drives an excavator for Hoa Hiep Company Limited, said: Currently, 8 excavators are working all day. One machine will have two people taking turns driving it, each person will do 1 and a half shifts a day, equivalent to 12 hours of continuous work. Construction at a height of 70m requires experienced driving techniques and ensuring safety is paramount. Photo: Hai Viet |
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Than Vu Tunnel has a permanent design, the tunnel shell is made of reinforced concrete. There are also Than Vu Bridge 1 and Than Vu Bridge 2, passing through the canyon and Xuan Duong Lake. Phase 1 will complete the construction of the first tunnel. Photo: Tran Chau |
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| The North-South Expressway project through Nghe An province is about 87.84 km long, belonging to two sub-projects: Nghi Son - Dien Chau and Dien Chau - Bai Vot, passing through Hoang Mai town and the districts of Quynh Luu, Yen Thanh, Dien Chau, Nghi Loc and Hung Nguyen. Photo: Engineers regularly discuss work at the construction site. Photo: Tran Chau |
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The North-South Expressway is built as a class 100-120 expressway, with a design speed of 100-120 km/h, with the section through Than Vu mountain having a design speed of 80 km/h. Photo: Construction vehicles continuously ensure the progress of the North-South Expressway project through Dien Chau - Bai Vot according to the set schedule. Photo: Quang An |