Watch the steel arch "patching" the landslide in the Bai Gio railway tunnel.

On the evening of April 21st, trains officially resumed operation through the Bai Gio railway tunnel – the site of a landslide nine days earlier that paralyzed the North-South railway line.

Previously, on April 12th and 13th, a landslide occurred in this railway tunnel with a total volume of over 200 cubic meters, completely blocking the tunnel.

Immediately afterwards, the construction units drilled 39 boreholes, including 2 boreholes from the mountainside downwards and 37 boreholes inside the tunnel, to pump high-pressure concrete, creating stable cohesion for the Bai Gio tunnel.

Large steel bars were transported in by workers to be used for reinforcing the tunnel.

Workers are welding large steel bars to create a sturdy arch at the landslide site in the Bai Gio tunnel.

Workers used picks and crowbars to clear away the soil and rocks surrounding the railway tracks before the line was reopened.

Workers used their hands to place the wooden blocks onto the railway tracks, ensuring balance between the two rails, and cleared away equipment before the tunnel opened.

At exactly 5:45 PM on April 21st, the railway industry conducted a trial run of a construction train through the Bai Gio tunnel to assess its safety.

On the afternoon of April 21st, using a drill bit at the top of the tunnel, the team of workers continued to mix and pour concrete into the landslide area.

Technicians use mini cameras to perform "ultrasound" scans inside the landslide area, thereby assessing the degree of concrete filling at the landslide site.

Regarding road transport, it is expected that all types of vehicles will be allowed to pass through Ca Pass tomorrow (April 22nd).

The Bai Gio Tunnel (located in Dai Lan commune, Van Ninh district, Khanh Hoa province) is approximately 900m long and was built by the French more than 90 years ago, completed and put into use in 1936.

According to the railway industry, after 88 years of operation, the layers of soil and rock on top of the tunnel lining have weathered over time and fallen freely onto the tracks below, paralyzing the North-South railway line.

Source: https://dantri.com.vn/xa-hoi/xem-vom-sat-va-diem-sat-lo-trong-ham-duong-sat-bai-gio-20240421200852409.htm