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RISKS CONSORTIUM(Geological and Geotechnical Risks) : 

RISKS CONSORTIUM(Geological and Geotechnical Risks) Ciência 2010 Lisboa, 5-6 Julho, 2010

Consortium : 

Laboratório Nacional de Energia e Geologia, IP Laboratório Nacional de Engenharia Civil, IP Fundação da Universidade de Lisboa - Faculdade de Letras (FUL) Centro de Estudos Geográficos da Universidade de Lisboa (FUL-CEG/UL) Faculdade de Ciências da Universidade de Lisboa (FCUL) Centro de Geologia da Universidade de Lisboa (CeGUL) Instituto Superior Técnico Centro de Recursos Naturais e Ambiente (CERENA) Centro de Geo-Sistemas (CVRM) Universidade de Évora (UEvora) Centro de Geofísica de Évora (CGE) Universidade de Aveiro (UA) Centro de Estudos do Ambiente e do Mar (UAvr-CESAM). Risco Geológico GeoBiotec Instituto de Meteorologia Empresa de Serviços e Desenvolvimento de Software, SA (EDISOFT) CiÊNCIA 2010 RISKS CONSORTIUM - Geological and Geotechnical Risks 2 Consortium

Topics : 

CiÊNCIA 2010 RISKS CONSORTIUM - Geological and Geotechnical Risks 3 Topics

Topics : 

CiÊNCIA 2010 RISKS CONSORTIUM - Geological and Geotechnical Risks 4 Topics

Interest of Risk Management : 

Sustainable development Environmental conservation Individual well fare and safety Scarcity of economical resources Optimization of benefits arising of resources allocation Respect for the equity of rights Crescent need of Natural risk management and due to human action Accountability and transparency in engineering practice Communication between technicians, decisions makers, regulators and general public Interest of Risk Management RISKS CONSORTIUM - Geological and Geotechnical Risks CiÊNCIA 2010

Interest of Risk Management : 

Interest of Risk Management In Geotechnics Systematic and explicit approach of uncertainties Integrated consideration of the potential consequences Contribution for the minimization of non predicted situations, incidents and accidents Integration of all activities inherent to the work safety All phases Operation conditions Conservation state RISKS CONSORTIUM - Geological and Geotechnical Risks CiÊNCIA 2010

Liquefaction and Cyclic Mobility : 

Assessment and mitigation of the liquefaction potential of soils based on geological/geomorphological and geotechnical studies Possible consequences of post liquefaction phenomena in embankment dams and other geotechnical structures CiÊNCIA 2010 7 Liquefaction and Cyclic Mobility RISKS CONSORTIUM - Geological and Geotechnical Risks

Landslide and ground movement : 

Development of methodologies for landslide and ground movement risk assessment National railway system Comparison of alternative rehabilitation projects Prioritization of costs allocation CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 8 Landslide and ground movement

Geological/geotechnical risks through the coast line : 

Observational methodologies and risk geotechnical assessment methodologies to study the Portuguese coastal line Types of structural as well as non-structural measures to minimize the risks due to the effects of coastal erosion CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 9 Geological/geotechnical risks through the coast line

Slide 10: 

Overlapping of geological and other data: Litologies and alteration Main faults and fracturing patterns Hydrogeologic features Slopes Land use and construction Geomorphologic Mapping Land slide and rock fall risks Recent and old occurrences Deliverables for: Land use planning Risk prevention CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 10 Mapping of GeomorphologicSusceptibility

Slide 11: 

CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 11 Geochemical dispersion due to industrial activities Hierarchy and tipification of “black points” Case Study of Abandon Mines in Portugal Government Program for the recovery of old mine sites Research on geochemical dispersion is a pre-requisite for recovery projects

Deterioration mechanisms and agents of geotechnical structures : 

Failure of earth dams and dikes due to overtopping Developing of a numerical model for predicting hydro grams of rupture originated from the occurrence of breaches in overtopping embankments Risk management in underground works during construction and service CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 12 Deterioration mechanisms and agents of geotechnical structures

Probabilistic models applied to geotechnical structures : 

Intrinsic variability of the ground characteristics Time and spatial variability of the geotechnical and structural actions Imperfection/incompleteness of the adopted geotechnical and constitutive models Quantification of failure probability aiming to the correspondent risk quantification CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 13 Probabilistic models applied to geotechnical structures

Acceptability and tolerability risk criteria of geotechnical structures : 

Acceptable and tolerance criteria for underground urban and inter-urban structures CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 14 Acceptability and tolerability risk criteria of geotechnical structures

Risk mitigation measures of geotechnical structures : 

Analysis of measurable risk factors Real time monitoring systems CiÊNCIA 2010 RISKS CONSORTIUM – Geological and Geotechnical Risks 15 Risk mitigation measures of geotechnical structures