SABO Planning Division

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Outline of SABO Planning Division,
SABO Department

Construction of a System to Efficiently Execute Sabo Works

●Examining and Surveying Master Plans for Sabo Works

Technical Criteria for River works and Sabo Works was revised on March 2004, including river system Sabo, debris flow control measures, driftwood control measures, volcano Sabo, and measures to prevent natural barriers and other extreme sediment flow in Master Plans for Sabo Works. We should, therefore, not only reconstruct past Technical Criteria, but also organize techniques to efficiently and safely conduct Sabo works.

●Study to Upgrade the Project Evaluation Manual

In order to prevent and mitigate sediment-related disasters, MLIT has been undertaking not only structural measures but non-structural measures. On the other hand, the present guideline does not consider the effect of non-structural measures. This study aims to develop and modify the cost-benefit analysis procedure to consider both types of measures.

Support for Planning of Comprehensive Sediment Control

●Study of Sabo Facilities Plans and Placement Techniques Based on Comprehensive

Various problems are caused by sediment movement in sediment transport regions from mountain districts to sea coasts. Solving these problems is an urgent matter. In this study, we develop methods to minimize the impacts of measures on living organisms and ecosystems.

●Study to develop methods of monitoring sediment control watersheds using remote sensing

We develop techniques for long-term monitoring of mountain district watersheds to promptly spot locations of slope failures.

●Observing Sediment Transportation

As a part of comprehensive sediment control, we develop and improve sediment transportation observation methods and also build a data base which can analyze and control sediment transportation data observed throughout Japan.

●Sediment-Related Disaster Database Construction Project

To promptly present data concerning the technical foundation for laws and technical criteria, policy planning, and measurement of effectiveness of works, we are constructing a data base system able to store information concerning sediment-related disasters, sabo LiDAR data base, and so on.

Support for Disaster Response

When extreme sediment-related disasters occur throughout the country, we advise and support the prevention of secondary disasters, prompt response and disaster recovery planning.

Support for Emergency Management Response

●Research on behavior modification through sediment-related disaster risk communication

We research ways to widely and promptly announce information about sediment-related disaster and study risk communication methods such as disaster prevention education.

●Research on more efficient  early response to large scale disasters

It is possible to predict a variety of phenomenon which may accompany a large scale sediment-related disaster such as an earthquakes or volcanic eruption. We examine and develop emergency management support techniques so we can collect and share information and establish more efficient systems by, for example, effectively using limited recourses.

Study of rationalization of slope failure measures

●Research on methods of evaluating risk of a disaster caused by slope failures

Heavy rains trigger numerous slope failures and many regions are damaged every year. It is necessary to more stably promote slope failure prevention works. To do so, we develop slope failure prevention works as quantitative rational measures to prioritize projects and incorporate appropriate measures.

●Research on slope failures occurring on long slopes and required performance of emergency facilities

We analyze long slope failure processes and the causes of liquefaction of colluvium so that we can propose efficient methods to prevent long slope failure. We also examine and research required performance to reflect the latest knowledge and to cut the costs of slope failure prevention work.

●Research on changes of snow cover caused by global warming and avalanche risk analysis methods

We research methods of analyzing changes of slope failure risk posed by climate change.

International Cooperation

●Dispatching Personnel to the Typhoon Committee organized by WMO/UNESCAP
●Teaching trainees from JICA
Research staff

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Ministry of Land, Infrastructure, and
TransportNational Institute for Land and
Infrastructure Managemen

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