Mt. Fuji & Sabo Project

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What's "Sabo"

Sediment disasters have been threatening people's lives from ancient times.
In Japan, incorporating the sediment disaster control technology of Europe have been promoting its own research from the Meiji period. Now, our advanced disaster control technology have much been improved than other countries. It has also been known around the world as the international word of SABO.

It is said that the word root SABO was from the official notice title "土砂溢漏防止(Dosya Rouei Boushi - Flood and Sediment-related disaster Prevention)" of Minbu-sho (Ministry of Popular Affairs in the Meiji period). After that, they picked up two Chinese characters (a.k.a. ‘kanji’) from the title, and began to call it "土砂溢漏防止*" SABO.

Debris flow countermeasure facilities

The facilities for SABO, have three types of facilities.

1.Sabo Dam

Sabo Dam
A Sabo dam facility receives debris flows directly and prevents them from flowing downstream.
With a large amount of sediment, this facility would work to fix the foot of a hill to prevent the collapse on the hillside.

2.Groundsill Works

  Groundsill Works
To protect the riverbed from scraping, groundsill works solidifies the bottom of the river.
The gradient of the river would be gently which will reduce the risk of floods.

3.Hillside Works

Hillside Works
With loggings and disasters, outflow of sediment proceeds and becomes difficult to grow plants.
This causes a vicious cycle of further collapsing.
The hillside work is to create a stable slope with installation of fences and walls to block sediment flows. It also fixes the slope of the soil for the growth of the plant.
A hillside work is to create a stable slope with installation of fences and walls to block sediment flows, and to fix the slope soils for the growth of the plant.

Copyright (c) 2006 Mt. Fuji Sabo Office, Chubu Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism. Allrights reserved.