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Pilot study looks at dyke erosion

Update: November, 27/2012 - 09:53

HCM CITY (VNS)— The banks of the Long Xuyen River in the Cuu Long (Mekong) Delta province of An Giang have been fortified to prevent landslides, following guidelines based on an analysis of data collected by a pilot project.

Data collected at the site analysed the cause of the landslides, according to Dr Tran Nguyen Hoang Hung of HCM City University of Technology, who is in charge of the project, conducted by the university with support from the Japan International Cooperation Agency (JICA) and Kumamoto University.

"The most important thing is to find out the exact cause of each landslide area, so we can fix the problem effectively," he told Viet Nam News.

The general principle is to build a strong and durable riverbank to prevent landslides from happening.

"We proposed solutions that are especially compatible with natural conditions in An Giang Province, in terms of available materials and weather conditions," he said.

The working group evaluated the effectiveness and feasibility of alternative solutions, and considered them to be economically efficient.

One solution was to use sand-compaction piles to strengthen the riverbank.

Monitoring data collected after six months of construction revealed no signs of movement beyond the regulated limitation.

Underground-water monitoring wells and cross-transposition monitoring systems were installed.

"We are conducting research on a new method of dealing with landslides, in which new materials comprised of soil and cement will be used," he told Viet Nam News.

Another study on landslide prevention will be conducted next year with the support of experts from Japan, he said. — VNS

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