Workshop "Technological solutions for flash floods and landslides prevention"
Create date: 07/11/18
On July 9, 2018 in Hanoi, the Central Steering Committee for Disaster Prevention and Control (CCDPC) held a scientific workshop on "Technological solutions for flash floods and landslides prevention".

Attending the conference, there were Mr. Tran Quang Hoai, Director General of Vietnam Disaster Management Authority (VDMA) under MARD, Standing Member of the CCDPC; more than 100 delegates from the provinces where were facing high risk of flash floods and landslides; the relevant scientific research institutions and international organizations from Japan, Taiwan, the World Bank, ADB...

 

From Vietnam Academy for Water Resources (VAWR), there were Assoc. Prof. Dr. Nguyen Tung Phong –Deputy Director General; representatives of the National Key Laboratory for River and coastal engineering, Center for Training and international Cooperation and Planning Department.

 

The workshop chaired by Dr. Tran Quang Hoai, Director of VDMA, standing member of the CCDPC, said that from 2000 to 2015, more than 250 flash floods and landslides have occurred in the country, causing 779 people dead and missing and 426 injured and estimated economic losses of trillions VND.

 

Flash floods and landslides occur in most of the mountainous and midland provinces of Vietnam, such as Son La, Dien Bien, Lai Chau, Lao Cai, Yen Bai, Ha Giang and Tuyen Quang. The Government issued Resolution 76 / NQ-CP on natural disaster prevention and control, which focuses on the mountainous areas in the North and North central regions to identify potential risk areas for landslides and flash floods in order to implement synchronous construction and non-construction solutions, warning information, forecasts and production adjustments to limit human losses, ensure sustainable livelihoods in accordance with the custom of each area. At the same time, priority should be given to the application of science and technology in observation, monitoring, directing and managing the response to natural disasters.

 

 In the mountainous area in the north, there are thousands of points that are prone to landslides, flash flood risk for people and property, especially when rain and floods coming in the peak period of the season. Therefore, Dr. Tran Quang Hoai affirmed that application of scientific and technological solutions in warning, forecasting, construction of risk mitigation projects, protection of important areas is urgent task.

 

According to the representative of the VDMA, the application of science and technology in flash flood and landslide prevention and control in Vietnam, in the last 15 years, from 2000 to 2015, more than 50 projects on flash floods and landslides study have been carried out including investigations, surveys, zoning and warning of flash floods appearing possibility in mountainous areas of Viet Nam - Phase 1: Northern Mountains area (MONRE); Investigation, survey and zoning of flash flood risk area in Central region and Central Highlands (MONRE); Investigation, survey and zoning for landslide risk warning in mountainous areas of Vietnam (MONRE); Capacity strengthening of disaster risk reduction for Vietnam, piloted in some areas of Lao Cai and Yen Bai provinces (VAWR under MARD). The advantages of the projects are to create a database for flash flood research projects; appropriate methods for analyzing and mapping flash flood risk area; to propose and implement some flash flood warning systems in the form of testing for a number of regions and river basins; set up a map of current landslide situation in the Northern mountainous region (14 mountainous provinces in the North and North Central Region).

 

 In order to improve the prevention and mitigation of damages caused by flash floods and landslides, in the coming time, Some recommendations were suggested by VDMA representative such as the emergency application of both structural and non-structural measures for flash floods and landslides control; study and put into practice the warning technology and landslide prevention to implement from 2018; There should be more  research projects on flash floods and landslides; Development of a high accuracy warning map system ... At the same time, VDMA also proposed specific tasks to the central level, research institutions and local organizations.

Dr. Nguyen Tung Phong gave speech at the workshop (Vu Sinh - TTXVN)

On behalf of VAWR, Dr. Nguyen Tung Phong introduced the early warning system for flash flood risk reduction. This is a collaborative project between the Vietnam Institute of Water Resources Research and the National Disaster Management Institute (NDMI) - Korea, inherited and developed from research successfully applied in Korea. The project has also been deployed in the Philippines. The project is the integration of multi-branch on the fields of geology, geomorphology, radar, meteorology and hydrology based on the application of new technological achievements.

The project aims to build a flash flood warning system for some river basins and small streams that are vulnerable to floods and flash floods in Lao Cai and Yen Bai provinces, Vietnam; Training and practice for the operation of flash flood warning systems for some areas in the project area will be given to management officials at all levels.

Early warning system to reduce the risk of flash floods, which can be used to forecast flash floods and warnings, help people timely to evacuate before flash floods occur based on the level of danger of actual rainfall and data on water level observed from the meters to reduce the risk of flash floods and reduce damage; Provide flood maps, risk maps and river information to address the risk of flash floods.

Regarding the outcomes of the collaborative project, Dr. Nguyen Tung Phong said, 03 automatic rain gauges and warning systems have been installed the in Lao Cai. Currently in testing operation; in 2018, three more rain gauges and warning systems will be installed in Yen Bai.

"With this technology, it requires the local staffs after the handover must be trained to be able to operate well, and secondly, to raise awareness of the local people to absorb knowledge and follow the direction when flash flood warning is informed ", said Dr Phong. He also talked about the application of this technology in early warning of flash floods and landslides in Korea.

Mr. TaK Ishikawa - Chief Representative of South East Asia Office of Nippon Steel and Sumikin Metal Company shared sabo dam technology with flexible steel frame in the prevention of disaster related to sediment. This technology helps to prevent and combat mud and rock floods; prevention of landslide; prevention and control of falling rocks; retaining large rocky soil, floating wood when rock mud flood occurs and leaving sand, soil and downstream movement under normal conditions; ensure the slope of the stream bed; protection of streams and ecosystems; not interfere with the animals or fish moving through, ensuring the continuity of the stream, easily remove the trapped stone.

Subsequently, participants attending the workshop also exchanged, discussed and provided valuable comments on measures to prevent flash floods and landslides in Vietnam.

 

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