Lake Cay An is now basically safe.

Under the direct and decisive leadership of the Chairman of the Lam Dong Provincial People's Committee, Ho Van Muoi, regarding potential risks at the Cay An reservoir, urgent solutions and remedial efforts were implemented to ensure the safety of the dam and, especially, the people. By the afternoon of November 8th, the Cay An reservoir was stable and no longer posed the predicted risks.

Chairman of the Provincial People's Committee Ho Van Muoi personally went to the scene on the night of November 7th and requested relevant forces to mobilize maximum manpower and resources to urgently khắc phục the incident at Cay An Lake.

On the afternoon of November 7th, due to the prolonged heavy rainfall from Typhoon Kalmaegi, the water level in Cay An Reservoir rose rapidly, causing a crack approximately 54 meters long and 2 meters deep, with an opening of 0.2-0.5 meters, to appear near the dam's spillway. The crack is at risk of further expansion if the bad weather persists, posing a potential threat of dam failure.

On the night of November 7th, Mr. Ho Van Muoi, Chairman of the Lam Dong Provincial People's Committee, visited the scene to inspect the incident at the Cay An reservoir dam. After inspecting the situation, Chairman Ho Van Muoi directed the relevant forces to urgently evacuate people and property to safe locations. He also instructed them to prepare sufficient essential supplies according to the "four on-the-spot" principle to provide emergency assistance to the people.

The Chairman of the Provincial People's Committee also requested relevant forces to mobilize maximum manpower and resources to rectify the problem at Cay An Lake as soon as possible.

The drilling locations have been identified and marked.

After discovering the problem, authorities mobilized more than 200 people and machinery to work through the night to fix it. For cracks in the dam body, technicians proceeded to drive wooden piles and reinforce the areas with sandbags to prevent landslides.

To date, the water seepage problem has been largely resolved. The main cracks have been temporarily repaired, ensuring initial safety for the dam structure.

Authorities have breached the spillway and installed additional siphon pipes to speed up the water level reduction in the reservoir. This afternoon, November 8th, four high-capacity pumps were deployed to increase the rate of water discharge.

Authorities drove in mangrove stakes and used sandbags to reinforce the dam's embankment.

“Tonight, we are operating four pumps at full capacity to reduce the water level in the reservoir as quickly as possible to alleviate pressure on the dam. In addition to provincial forces, experts from the Department of Water Resources Management and Construction under the Ministry of Agriculture and Environment are also present to assist in resolving the issue,” said Nguyen Ha Loc, Deputy Director of the Department of Agriculture and Environment.

According to Mr. Loc, tomorrow morning, November 9th, the relevant authorities will proceed with drilling and pumping chemicals to reinforce the dam body, ensuring its watertightness and structural stability.

Four high-capacity pumps have been deployed to Cay An Lake to reduce the water level as quickly as possible.

Regarding the next steps to thoroughly address the problem at Cay An reservoir, authorities will conduct a comprehensive survey of the dam; and proceed with drilling and pumping sealant to repair the four cracks that appeared on November 7th. This work is expected to take approximately 15 days. Repairing the entire dam structure is expected to take about 30 days.

According to the regional meteorological and hydrological station, today and tomorrow, the Ta Nang area will only experience light rain, and from the beginning of next week the weather will turn sunny, favorable for construction. Therefore, if the current solutions are implemented urgently and there is no unusual heavy rain, the risk of dam failure is assessed as low.

Install a siphon pipe to speed up the water drainage rate in the pond.

The Project Management Board and the Irrigation Sub-Department are urgently finalizing the design documents to organize parallel construction. In the long term, the structure will be reinforced with gabions at the dam abutments; and will be handed over to a professional irrigation management and operation unit for regular maintenance.

Currently, the Department of Agriculture and Environment has assigned department leaders and the head of the Irrigation Sub-Department to be present at the site to supervise the implementation of remedial measures.

Source: https://baolamdong.vn/ho-cay-an-co-ban-da-an-toan-401439.html