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Serious land subsidence hits northern Vietnam

Serious land subsidence hits northern Vietnam

Saturday, November 07, 2020, 17:38 GMT+7
Serious land subsidence hits northern Vietnam
A key road in An Son Commune, Thuy Nguyen District, Hai Phong City is badly damaged due to land subsidence. Photo: Ngoc Anh / Tuoi Tre

Some areas in the northern Vietnamese city of Hai Phong are facing serious land subsidence, possibly due to quarrying and a natural weathering process in limestone landscapes.

By Tuesday, a giant pit, measuring three meters deep and hundreds of square meters wide, had formed in Village 9, An Son Commune, Thuy Nguyen District, damaging roads and swallowing numerous plants cultivated by local households.

Land subsidence hits a vast area in An Son Commune, Thuy Nguyen District, Hai Phong City, destroying many plants of local households. Photo: Ngoc Anh/Tuoi Tre

Land subsidence hits a vast area in An Son Commune, Thuy Nguyen District, Hai Phong City, destroying many plants of local households. Photo: Ngoc Anh / Tuoi Tre

Land subsidence continued worsening in the village as the pit kept expanding, threating human lives and the property of nearby households, a representative of Thuy Nguyen District said on Tuesday.

Local authorities have planted warning signs in vulnerable areas and asked a family to evacuate to a safe place.

At the end of October, land subsidence gave rise to the pit, which measured one to 1.25 meters deep at that time, on a key road section in the village.

Local authorities post traveling banning signs at risky areas to secure safety for local residents. Photo: Ngoc Anh/Tuoi Tre

Local authorities place a warning sign in a dangerous area to ensure safety for local residents. Photo: Ngoc Anh / Tuoi Tre

Some residents attributed the road subsidence to underground water as it used to lie next to the Con River.

Besides, the sinking area is close to a quarry, with mines possibly used during the exploitation.

After a survey, a working group of Thuy Nguyen District identified the cause as weathering, which usually takes place in limestone landscapes.

The concrete structure of a road in An Son Commune is broken into pieces. Photo: Ngoc Anh/Tuoi Tre

The concrete structure of a road in An Son Commune is broken into pieces. Photo: Ngoc Anh / Tuoi Tre

Hai Phong City’s government has asked the Department of Natural Resources and Environment to coordinate with relevant units to find out the main reason for such subsidence and suggest solutions.

Thuy Nguyen District’s officials are tasked with keeping local people safe and sound.

Long cracks keep appearing and expanding on land surface. Photo: Ngoc Anh/Tuoi Tre

Long cracks keep appearing and expanding on the land surface. Photo: Ngoc Anh / Tuoi Tre

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