On April 16th, Mr. Le Quang Vinh, Director of the Phu Khanh Railway Exploitation Branch, stated that due to the continued landslides inside the Bai Gio railway tunnel, the construction team had to change their remediation plan.
The Bai Gio Tunnel passes through the Ca Pass, with National Highway 1 above it.
The proposed solution involves drilling multiple boreholes from the mountainside to pour concrete into the tunnel's roof. Nine boreholes are planned, after which concrete will be pumped in using a concrete pump.
According to Mr. Vinh, this method will ensure the stability of the tunnel roof but requires a large amount of concrete and will be more labor-intensive and time-consuming, so the opening time for the tunnel cannot be determined yet; the earliest it could be opened is by the end of this week.
Workers are drilling from the top of the tunnel to pump concrete down.
Inside the tunnel, another construction team is continuing to reinforce the tunnel roof with steel frames. Workers say that since the road closure on Ca Pass, the amount of landslides has decreased significantly.
According to Mr. Vinh, the construction team currently has over 200 workers along with numerous vehicles, machinery, and technical equipment, racing against time to try to fix the problem and reopen the tunnel as soon as possible.
The drills are being prepared.
Mr. Tran Viet Tung, Director of the Nha Trang Railway Transport Branch, said that so far the unit has transported more than 10,000 passengers between Tuy Hoa station (Phu Yen) and Gia station ( Khanh Hoa ) and vice versa.
"The transfer increased the total travel time by about an hour. However, passengers are also understanding of the railway industry as this was an unforeseen incident," Mr. Tung said.
The transfer of goods from cargo ships at Hoa Huynh station (Ninh Hoa town, Khanh Hoa province) is being carried out urgently.
According to Mr. Tung, cargo ships have ceased operations until the Bai Gio tunnel is reopened. For frozen or perishable goods, transportation will be done by truck or container, with the railway industry covering the transportation costs.
The containers were lifted onto trucks for transport.
The Bai Gio railway tunnel was built by the French in 1930 and completed in 1936, xuyên through the Ca Pass between Phu Yen and Khanh Hoa provinces. The tunnel is nearly 900 m long, 5 m high, and 4 m wide, with National Highway 1 above it.
Landslides in the tunnel have paralyzed the North-South railway line.
As Thanh Nien newspaper reported, at 12:45 PM on April 12th, a serious landslide occurred in the Bai Gio railway tunnel area through Ca Pass, paralyzing the North-South railway line. Trains traveling from the south had to stop at Gia station (Van Ninh District, Khanh Hoa Province). Trains traveling from the north had to stop at Tuy Hoa station (Phu Yen Province).
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