The Da Nang Project Management Board for Agricultural and Rural Development Construction and the Son Tra Peninsula and Da Nang Tourist Beaches administration mobilized over 200 people for the work on Jan. 2.
My Khe is the most severely eroded area in Da Nang, with its damage stretching some 150 meters along Vo Nguyen Giap Street.
The sea has encroached around 15 meters inland.
The plan is to have trucks drive to the beach, load sand from a sandbar, and take it to the eroded area for dumping.
According to Forbes, the global media company best known for its rankings and lists, in 2013 My Khe was one of Asia's six most alluring beaches.
TripAdvisor users ranked it among the 10 most beautiful beaches in Asia.
The sandbags are tightly packed and compressed into the steel fencing. Each fence holds about 20 sandbags and is around 60 cm high.
The workers then use steel wire to tightly secure the fencing to ensure the bags remain intact when hit by waves.
The fencing with the bags is stacked on top of each other. In areas where the dike has been finished, machinery is used to scoop sand from the trucks and rebuild eroded areas.
The My Khe coastline has been eroded by a further two meters in just the last three days, felling trees and destroying walkways.
Tran Dai Nghia, deputy head of the Son Tra Peninsula and Da Nang Tourist Beaches Management Board, said the sandbags would help prevent further erosion.
"This afternoon we requested the 224 Anti-Aircraft Artillery Regiment for another 100 soldiers."
He said after the dike is completed, the men would also level the area to improve its appearance.
He blamed the erosion on rip currents caused by the northeast monsoon.
Depending on the weather each year, the location of the rip currents varies, leading to varying degrees of erosion. However, the beach will be replenished with sand again in March or April.
"This is the first time in 25 years that the waves have caused so much damage to My Khe Beach," Nghia said.
In recent days authorities have set up warning signs to alert people about the erosion risk and cordoned off the area.
Nguyen Dinh Vinh, standing deputy secretary of the city Party Committee, urged the Son Tra Peninsula and Da Nang Tourist Beaches administration to ensure the safety of workers undertaking the repairs.
"The city will organize workshops and consult experts to find long-term solutions to prevent erosion in tourist beaches."
