Risk of dam burst containing 1.2 million cubic meters of water in Dak Nong

After many days of heavy rain, the body and foot of the Dak N'Ting irrigation dam in Dak G'long district showed many cracks and subsidence, at risk of breaking, and nearly 100 people had to be evacuated.

The concrete of the dam body was lifted up and cracked for dozens of meters. Photo: Ngoc Oanh

According to Mr. Le Dinh Tuan, Chairman of the People's Committee of Quang Son Commune, cracks and subsidence appeared at the dam and around the Dak N'Ting reservoir on August 1. Up to now, the cracks in the hill area near the foot of the dam are about 500 m long, about 150 m deep and show no signs of stopping.

The hill on the right side of the dam is currently sinking, covering an area of ​​about 10 hectares of people's farmland. It is estimated that nearly one million cubic meters of land is at risk of landslides. The dam body also has many large cracks, 10-20 cm. The road on the dam body is broken, and the concrete is protruding.

Dak N'Ting irrigation dam holds 1.2 million cubic meters of water. Photo: Ngoc Oanh

The Dak N'Ting irrigation reservoir project has a total investment of nearly 137 billion VND, with a capacity of more than 1.2 million m3 of water, serving irrigation for nearly 700 hectares of crops in Quang Son commune. To ensure safety, the commune government has blocked the entrances and exits to the Dak N'Ting irrigation dam and evacuated 34 households in the risk area.

"According to calculations, if the dam breaks, the water level in the downstream area will rise about 2 meters, so we are reviewing to evacuate 140 more households in Dak N'Ting," said Mr. Tuan.

The crack at the foot of the dam is about 500 meters long. Photo: Ngoc Oanh

Meanwhile, Chairman of Dak Glong District People's Committee Tran Nam Thuan said that the crack in the dam body is now wider than yesterday. If the heavy rain continues for another week, the risk of the dam breaking is very high.

"The locality has prepared response plans in case the dam breaks," said Mr. Thuan, adding that all dam sluice gates have been opened to drain water from the dam, limit negative consequences and find solutions.

Since the end of July, Dak Nong has been experiencing continuous heavy rains, causing landslides and subsidence on National Highway 14 and the bypass (section through Gia Nghia City); Quang Truc Commune (Tuy Duc District) and Dak N'Drung, Dak Song District.

According to the Dak Nong Province Steering Committee for Natural Disaster Prevention and Search and Rescue, the recent floods killed two people; more than 110 households had to evacuate from areas at high risk of landslides and subsidence; 147 houses were flooded; 646 hectares of crops and nearly 215 hectares of ponds were flooded...

Tran Hoa

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