Off Tohoku Pacific coast earthquake Southern Sendai Bay coast

Off Tohoku Pacific coast earthquake Southern Sendai Bay coast

【Project plan: Nakahama site 】
Off Tohoku Pacific coast earthquake Southern Sendai Bay coast
Photo taken on 12 March 2011 Bureau project site Bureau project site Before disaster After disaster Watari
Location Ushibashi‐kako No.11 Baqikaen (nursing home) No.9 No.7 Yamamoto Yamamoto No.7 No.5 Nakahama project site Yamashita Daini Ele. School Sand Bags Construction road Southern Sendai Bay coasst No.9 Yamashita Daini Ele. School
Yamashita Daini
Ele School
N 11
No.11 Kasano projecct site JR Joban Line JR Joban Line
Joban Line
Project plan Project site ‐Construction should start from high‐priority zones in which livable houses and important facilities are still left. ‐Project should also be coordinated with prefectures after discussions with relevant bodies <Emergency storm‐surge measures>
Storm‐surge barrier and inland water drainage By flood season: closure works up to storm‐surge height with large sand bags
By typhoon season: reinforcement of the structure with local materials
Project image Large sand bag Ｎ
Pacific Ocean Pref. road No.38 Construction yards <Stage construction> Riprap works (using local materials) TP 20
T.P.+2.0m
Protection of hinterland from storm surges/high waves before full restoration
After typhoon season: temporary levees to block high waves of recent record
<Full restoration project> Full restoration should start after coordination with local community‐ rebuilding plans and setting protection levels.
Pacific Ocean 【Project plan: Kabasaki & Kasano site 】
Kabasaki site Restoration plan for coastal levees (southern Sendai Bay coast)
Emergency restoration zone L=1,700m
Emergency restoration zone L=2,100m
Bureau project site Bureau project site Kasano project site Kabasaki project site Nakahama project site Emergency restoration zone
L=1,700m
Emergency restoration zone
L=2,100m
Emergency restoration zone
L=6,500m
Night‐soil treatment plant Project site 集落
Minami‐nakahama Central Hospital Location Settlement Project image (Kabasaki) Crown width
Crown
width
Ｌ＝3ｍ
End of project zone T.P.+6.1m
Large sand bag Ｎ＝5
Block lining Ｌ＝3ｍ
Embankment Pref. Route 38 Iwanuma Yamamoto JR Joban Line Watari
Bureau project site Settlement Night‐soil treatment plant Settlement
Settlement Bureau project site Kasano site Route 6
Tsunami-hit area
‐The basic concept of the plan is the same with the Nakahama plan. ‐Wave barriers urgently needs to be restored up to the height that protects the area from high waves, because important public facilities for local community restoration is in the flooded area.