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About promotion of preventive measures against earth and sand disasters

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◆What is the earth and sand disaster?

 

Heavy rain or earthquake trigger, and mountain and cliff collapse, and, with the earth and sand disaster, our life or property are disasters of threatened nature by soil and stone which mixed with water flowing out of river.

 

 

◆Type of the earth and sand disaster

 

Main thing of the earth and sand disaster includes three kinds of "mud flood" "landslide" "landslide".

 

"Mud flood"

 

Soil, stone, tree of mountain and valley (mountain stream) say terrible thing which runs with rock in the lead naturally (about 40-50km per an hour), and goes down with water caused by heavy rain or the long rain.

 

 

"Landslide"

 

 In the steep slope (thing with 5m or more height in an angle of 30 degrees or more of slant), rainwater soaks into the ground by heavy rain or the long rain, and it melted, and "cliff" collapses suddenly.

 

 

 

"Landslide"

 

 Rainwater soaks into the ground by heavy rain or the long rain and the lifted ground is extended and says thing which begins to move integrally by power of water.

 

 


  

◆About prevention of earth and sand disaster enactment

 

Such earth and sand disaster occurs almost every year in each places of the whole country, and countermeasures construction such as maintenance or prevention of steep slope collapse construction of bank which does not get erosion control is carried out by country, the prefectural municipalities.

 

In addition, on the other hand, enormous time and expenses are necessary that new housing land development advances for dangerous point that the earth and sand disaster might produce like lower graph, and points with danger to suffer damage of the earth and sand disaster continue increasing year by year with that, and to make all points safe state by countermeasures construction.

 

 

[graph] Black spot and Maintenance Division finished point of immediate slant

(change of point number) 

 

 

Therefore, we clarify area with the risk with hardware countermeasures such as prevention of earth and sand disaster construction in addition to protect human life from the earth and sand disaster, and it is necessary to expand software countermeasures such as maintenance of the caution evacuation system or location restraint of new house in that.

 

"The prevention of earth and sand disaster method" (official name: law about promotion of the earth and sand disaster preventive measures in landslide warning areas) was constructed in April, 2001 to promote soft countermeasures for such earth and sand disaster.

 


  

 

◆Summary of the prevention of earth and sand disaster method

 

 We clarified area that could cause the earth and sand disaster to protect life of the nation from the earth and sand disaster and performed common knowledge of danger, maintenance of the caution evacuation system, restraint of new locations such as houses, move promotion of existing house, and "prevention of earth and sand disaster law" was intended that we promoted software countermeasures for the earth and sand disaster, and it was enforced.

 

 We carry out Surveys such as the use situation of the topography and land to receive this, and to make range that might be damaged of the earth and sand disaster clear based on law in Saga, and landslide warning area (under an alias: yellow area) and the earth and sand disaster perform two kinds of zoning of caution area (under an alias: red area) in particular.

 

 As we may ask for entrance in sites such as houses with conduct of Surveys, we have you understand purpose of Surveys, and cooperation, please.     

 

 

 

[table] Type of zoning by the prevention of earth and sand disaster method  

Landslide warning area

(yellow area)

 It is area admitted that harm might occur to life such as inhabitants or body by the earth and sand disaster, and common knowledge of danger, maintenance of the caution evacuation system are performed.

The earth and sand disaster is special

Caution area 

(red area)

  Destruction occurs to building, and permission system for specific development activity, structure regulation of building are performed in area admitted that remarkable harm might occur to life such as inhabitants or body by the earth and sand disaster.

 

 

Here is appointed. (image) 

 

 Mud flood

 Landslide

 Landslide

 

 

 

 

 

 

 


 

 

◆About approach of the earth and sand anti-disaster measures

 

In Saga, we work on software countermeasures such as hard maintenance such as erosion control business or steep slope collapse countermeasures business, designation of landslide warning area based on the prevention of earth and sand disaster method as the earth and sand anti-disaster measures.

 

However, it is actually necessary that inhabitants who evacuate, and act, disaster prevention bureau of municipalities, hometown firefighting team, many various places that, in addition, are concerned with the earth and sand disaster cooperate each other to prevent damage of the earth and sand disaster.

 

As we promote hard maintenance and soft countermeasures generally in Saga and want to push forward the earth and sand anti-disaster measures for victim zero by the earth and sand disaster, cooperation of, please.

 

Reference

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Inquiry
(ID: 10609)
Saga prefectural government office (corporation number 1000020410004) 〒 840-8570  1-1-59, Jonai, Saga-shi   Tel: 0952-24-2111 (main)     
Copyright© 2016 Saga Prefecture.All Rights Reserved.

Saga prefectural government office (corporation number 1000020410004)

〒840-8570
1-1-59, Jonai, Saga-shi
Tel: 0952-24-2111 (main)
Copyright© 2016 Saga Prefecture.All Rights Reserved.