integrated disaster management of the algiers-boumerdes (algeria)

53 Pages·2009·4.81 MB·English

IDRC International Disaster and Risk Conference
Chengdu (China), 13-15 July 2009
INTEGRATED DISASTER MANAGEMENT
OF THE ALGIERS-BOUMERDES (ALGERIA)
EARTHQUAKE OF 21 MAY 2003
Djillali BENOUAR
USTHB, Faculty of Civil Engineering, Algeria
[email protected]
IDRC CHENGDU 2009
INTRODUCTION
• WEDNESDAY 21 MAY 2003, AT 18 HOURS 44
MINUTES UTC (19H 44 LOCAL TIME), A
DESTRUCTIVE EARTHQUAKE OCCURRED IN THE
PROVINCES (WILAYA) OF ALGIERS AND
BOUMERDES AFFECTING A RATHER DENSELY
POPULATED REGION OF ABOUT 3,000,000 PEOPLE
WITHIN 1,000 KM2.
• THE MAGNITUDE OF THE EARTHQUAKE WAS
CALCULATED AT MS = 6.6 (MW 6.8). THE
EPICENTER WAS LOCATED AT 36°.89N –3°.78E AT
ABOUT 10 KM OFFSHORE FROM THE LOCALITY
OF ZEMMOURI IN THE PROVINCE OF
BOUMERDES ABOUT 50 KM EAST OF THE
CAPITAL CITY OF ALGIERS.
IDRC CHENGDU 2009
EPICENTRAL ZONE
IDRC CHENGDU 2009
INTRODUCTION
• THE MAIN SHOCK CAUSED THE LOSS OF 2,278
• THE MAIN SHOCK CAUSED THE LOSS OF 2,278
LIVES, INJURING MORE THAN 11,450 OTHERS,
LIVES, INJURING MORE THAN 11,450 OTHERS,
MAKING ABOUT 200,000 HOMELESS AND 45
MAKING ABOUT 200,000 HOMELESS AND 45
PEOPLE MISSING;
PEOPLE MISSING;
• IT DESTROYED OR SERIOUSLY DAMAGED AT
• IT DESTROYED OR SERIOUSLY DAMAGED AT
LEAST 128 000 HOUSING UNITS DISTRIBUTED
LEAST 128 000 HOUSING UNITS DISTRIBUTED
AS FOLLOWS: ALGIERS (78 000), BOUMERDES
AS FOLLOWS: ALGIERS (78 000), BOUMERDES
(34 000), TIZI OUZOU (7 000), BOUIRA (4 300),
(34 000), TIZI OUZOU (7 000), BOUIRA (4 300),
BLIDA (2 500), TIPAZA (1 700), BÉJAIA (850) AND
BLIDA (2 500), TIPAZA (1 700), BÉJAIA (850) AND
MÉDÉA (150) IN EIGHT OTHER PROVINCES.
MÉDÉA (150) IN EIGHT OTHER PROVINCES.
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AREA WITH MOST DAMAGE
IDRC CHENGDU 2009
AREA WITH MOST DAMAGE
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IDRC CHENGDU 2009
I. DAMAGE AND LOSS ASSESSMENT
I.1 METHOD USED
• THIS TASK IS ALWAYS ACCOMPLISHED BY THE
SPECIALIZED ENGINEERS, WHICH ARE
FAMILIAR WITH THE PROBLEMS OF STATICS
AND DYNAMICS OF STRUCTURES, OF THE
ORGANISME DE CONTROLE TECHNIQUE DES
CONSTRUCTIONS (CTC), A GOVERNMENTAL
BODY UNDER THE AUTHORITY OF THE
MINISTRY OF URBAN PLANNING AND
CONSTRUCTION.
IDRC CHENGDU 2009
I. DAMAGE AND LOSS ASSESSMENT
I.1 METHOD USED
• THE CTC HAS PROPOSED A METHODOLOGY TO
EVALUATE THE DAMAGE CAUSED O THE
CONSTRUCTIONS
• TO THIS AIM AND SINCE THE EVALUATION OF
DAMAGE SHOULD BE CARRIED OUT UNIFORMLY
TO ALLOW THE ENGINEERS INVOLVED IN THIS
DUTY TO PRESENT A HOMOGENEOUS
ASSESSMENT, A GUIDE (QUESTIONNAIRE) WITH
APPROXIMATELY SIXTY INFORMATION TO THE
FIELD ENGINEERS. THEREFORE, ALL THE
CONSTRUCTIONS IN THE STRICKEN ZONE ARE
MARKED WITH ONE OF THE FOLLOWING
COLORS:
IDRC CHENGDU 2009
I. DAMAGE AND LOSS ASSESSMENT
I.1 METHOD USED
• GREEN: CONSTRUCTIONS SLIGHTLY DAMAGED OR NOT
DAMAGED AT ALL AND WHICH MAY BE USED.
• ORANGE: CONSTRUCTION WHICH ARE DAMAGED AND
NEED A SECOND OR MORE DETAILED EXPERTISE TO
DECIDE WHETHER OR NOT THESE BUILDINGS MAY BE
RETROFITTED IN TAKING INTO ACCOUNT THE
IMPORTANCE OF DAMAGE AND THE COST OF REPAIR.
• RED: HEAVILY DAMAGED CONSTRUCTIONS WHICH
SHOULD BE DESTROYED.
•
IDRC CHENGDU 2009