TEC-FORCE

Disaster investigation such as TEC-FORCE of the river sector andUtilization of the result
TORII Kenichi (Ph.D. Eng.), Research Coordinator for Integrated Water Disaster Management,
River Department
Hattori Atsushi (Ph.D. Eng.) , HeadFUKISHIMA Masaki (Ph.D. Eng.), Senior researcher
FUKUHARA Naoki, Researcher
NAKAJIMA Hiromasa, Researcher
River Division, River Department(key word)

TEC-FORCE, Disaster investigation

１．Introduction

For the both downpour disasters, the TEC-FORCE was requested by theThe river department of the NILIM conducted the field investigation

river administrator to dispatch, and the joint survey team was quickly

when the technical support was requested by the river administrator, andorganized together by the MLIT Water and Disaster Managementadvised on restoration methods and design of river channels afterwards

Bureau after the disasters. It discussed and advised about staff dispatch,based on emergency policy and cause of the disaster.

local area investigation, emergency treatment and further restoration.

It may dispatch Technical Emergency Control Force (Hereafter,

３．Utilization of investigation

TEC-FORCE), when emergency support and advanced techniques are

The investigation at the time of disaster is useful not only to quickly andneeded especially. This year, it dispatched staff' to the rivers (see table)

properly restore after the disasters, but to analyze the cause of damage, towhere the river management facilities had been damaged by large-scaleutilize for revision of technological standards, to steadily reflect on design

floods.

and management by accumulating and sharing findings, and is useful toTable Main damaged river in 2012

Date
Cities, Towns, and villages
3-Jul Hita city Oita pref.

Water System River Name(Administrator)

improve design and evaluation methods of facilities and to rationalize
Type of Disaster (Numbers)

Yabe river, Yabe river water system (State, pref.)Dike collations

Arita river, Chikugo river system (Pref.)Over flood

Nakatsu city Oita pref.

Yamakuni river, Yamakuni river system (State, Pref.)Over flood

Kurume city Fukuoka pref.

Kose river, Chikugo river system (State, pref.)Over flood

12-Jul Kumamoto city, Kumamoto pref.

Shirakawa, Shirakawa river water system (State, pref.)Over flood

Aso city, Kumamoto pref.

Kuro river, Shirakawa river water system (State, pref.)Over floodKikuchi city, Kumamoto pref.

Goshi river, Kikuchi river water system (State)

Oguni Town, Aso county, Kumamoto pref. Jotachikawa, Chikugo river water system (State)
14-Jul Yanagawa city, Fukuoka pref.

Over flood
Over flood

Yabe river, Yabe river water system (State, pref.)Dike collations

Hita city, Oita pref.

Kagetsu river, Chikugo river water system (State, pref.)Over flood

Kurume city, Fukuoka pref.

Kose river, Chikugo river water system (State)Over flood

Ukiha city, Fukuoka pref.

Kumakami river, Chikugo river water system (State)Over floodNakatsu city, Oita pref.
22-Jul Tosa city, kochi pref.
14-Aug Uji city, Kyoto pref.
Uji city, Kyoto pref.
18-Aug Uji city, Kyoto pref.

Yamakuni river, Yamakuni river water system (State)Over flood

Driving channel, Hage river mouth (State)

Rubber dike damage

Midajiro river, Yodo river water system (Pref.)Water way wall damage(40ha flood)

Shizu river of Uji river branch Yodo river water system(Pref.) Land-slide
Midajiro river, Yodo river water system (Pref.)First aid restoration again stricken※Red：Dike collationsthem 2).
The NILIM shows restoration method examples, check points, and carepoints when designing facilities to the river administrator by making theinvestigation data of TEC-FORCE and analysis result into a data baseEspecially, if there are a lot of similar disaster examples, and if advanced
examination is necessary due to disaster complexity, it conducts theemphatic investigation and analysis, and utilize them as basic data to
update technology standards for river debris-slide protection andguidance. And, from this year, it set up the "River structure management
research task force"3), and is working on technological consultation andfollow regarding check and deterioration of river structure, on

２．Activity as TEC-FORCEIn Kyushu on July, 2012, a big disaster killing 31 lives occurred, causedby the heavy rain hitting the Oita and Fukuoka prefecture on July 3, andheavy rain hitting the Kyushu northern area from 11th to 17th in July.
There damage occurred on river management facilities like dike break etc
on the Kagetsu river on July 3, Shirakawa on July 12th, Yabe river,Kagetsu river and Yamakuni river, etc. on July 14.
And, the downpour in the Kyoto southern area in August caused flood
damage, breaking the waterway sidewall of Midajiro river in Ujigawa
water system managed by Kyoto Prefecturetechnologicalexamination

concerning

deterioration

prediction

influencing various river structures, and on the technological opportunity
research concerning mid/long-term management of the river structures.

【reference literature】
1) Disaster dispatch news, such as Kyushu northern area
downpours, Construction technology data, in July, 2012,Vol.54, NO.9 P4-9,2012
2) The version of river debris-slide protection technology
standard investigation Version 10 disaster investigation
http://www.mlit.go.jp/river/shishin_guideline/gijutsu/gijutsuk
ijunn/chousa/index.html
3) River structure management research task force homepage
http://www.nilim.go.jp/lab/fag/index.html