(KPL) Contractors have suspended boring the 1st Laos-China Friendship tunnel stretching 9 km between Boten of Laos and Bohan in China since January due to high salt concentration in soil on the Lao side.
The drilling is expected to resume this coming June, according to Secretary of Party Committee of the Laos-China Railway Project (First Section), Mr Wang Xiaodong.
The tunnel lies over 2 km on the Lao side and over 9 km on the Chinese side.
The company has temporarily suspended the construction to avoid damage to the tunnel, so it is necessary to consult with relevant sectors, such as the Ministry of Natural Resources and Environment to prevent steel structure from being damaged. We will redesign the tunnel to ensure it can stand salt damage so that it will be durable, said Wang Xiaodong.
More than 60% of tunnel boring work has been carried out.
The construction of the US$5.96 billion railway is set to be completed by the end of 2021.
Some 87 per cent of roadbed construction work has been completed with 54 per cent of planned tunnels built, and 43 per cent of designed bridges constructed since late 2016.
Source: Lao News Agency