Authorities in Ho Chi Minh City have installed a Japanese-made tunnel boring machine (TBM) to facilitate the construction of its first-ever metro.
The city’s Management Authority for Urban Railways on Wednesday afternoon began the installation of the TBM to support the metro project.
The newly imported machine is set to dig a 781 meter long underground tunnel to link two terminals of the metro line No.1, which connects Ben Thanh Station in District 1 with Suoi Tien Station in District 9.
The TBM is placed at the Ba Son Terminal in District 1 and will dig a tunnel leading to another terminal at the Municipal Theater in the same district.
With the help of the equipment, the metro project will have the largest tunnel, about 6.79 meters in diameter, in the Southeast Asian country.
According to the observation of Tuoi Tre (Youth) newspaper reporters, the machine was installed about 17 meters beneath the surface and required the service of around 40 construction workers.
A model of the TBM after being assembled. Photo: Tuoi Tre
Measuring a total of 70 meters long and weighing 300 metric tons, the machine includes a primary drill, about 12.5 meters long, an engine room, a control room, and a cement mortar supply chamber.
According to engineers, the TBM was manufactured in Japan and imported into Vietnam in January.
After being assembled and tested, it is expected to be officially operated in May, with a capacity of 12 meters of tunnel per day.
The metro line No.1 includes five components to be built at a cost of VND54 trillion (US$2.37 billion). All of them are anticipated to be completed in 2020.
The construction of the metro section from Ba Son Terminal to the Municipal Theater is executed by Japan’s Shimizu-Meada Joint Operation.