This is the Fourth part of the 4 part Lectured By “Marolo C. Alfaro, Ph.D., P.Eng.” in a Geotechnical Engineering Seminar Held at The University Of San-Jose Recollectos last August 4-6.
Sponsored By:
The Department of Science and Technology Republic of the Philippines, Department of Civil Engineering
University of Manitoba, Canada.
University of Manitoba, Canada.
Host Institutions:
Philippine Institute of Civil Engineers
Association of Structural Engineers of the Philippines
Angeles University Foundation, Angeles City
De La Salle University, Metro Manila
University of the Philippines, Metro Manila
University of San Jose Recoletos, Cebu City
University of Mindanao, Davao City
University of Southeastern Philippines, Davao City
Association of Structural Engineers of the Philippines
Angeles University Foundation, Angeles City
De La Salle University, Metro Manila
University of the Philippines, Metro Manila
University of San Jose Recoletos, Cebu City
University of Mindanao, Davao City
University of Southeastern Philippines, Davao City
Landslides
Mass movement refers to the downslope motion of soil and/or rock materials under the influence of gravity.
Mass movement refers to the downslope motion of soil and/or rock materials under the influence of gravity.
Landslide is a general term of mass movement.
Lectured Topics
Falls
Topples
Slides
Spreads
Flows
Landslide Hazard and Risk
The word ‘hazard’ is derived from the Arabic word for ‘a die’ (singular of dice) and is often related to ‘chance or probability’.
This definition is reflected in the United Nations definition of natural hazard: “the probability of occurrence of a potentially damaging natural phenomenon” (Varnes 1984).
The word ‘hazard’ is derived from the Arabic word for ‘a die’ (singular of dice) and is often related to ‘chance or probability’.
This definition is reflected in the United Nations definition of natural hazard: “the probability of occurrence of a potentially damaging natural phenomenon” (Varnes 1984).
Landslide Risk
Mathematically, it is the product of the probability of occurrence and the resulting consequence. The consequence in turn is the product of the elements at risk and their vulnerability.
Mathematically, it is the product of the probability of occurrence and the resulting consequence. The consequence in turn is the product of the elements at risk and their vulnerability.
Mitigation Strategy
9 Major elements proposed by USGS (United States Geological Survey) to reduce number of deaths, injuries, and economic losses caused by landslides:
Research
Hazard Mapping and Assessment
Real-time Monitoring
Loss Assessment
Information Collection, Interpretation, and Dissemination
Guidelines and Training
Public Awareness and Education
Implementation and Loss Reduction
Emergency Preparedness, Response, and Recovery
9 Major elements proposed by USGS (United States Geological Survey) to reduce number of deaths, injuries, and economic losses caused by landslides:
Research
Hazard Mapping and Assessment
Real-time Monitoring
Loss Assessment
Information Collection, Interpretation, and Dissemination
Guidelines and Training
Public Awareness and Education
Implementation and Loss Reduction
Emergency Preparedness, Response, and Recovery
Approaches to Mitigate Landslide Hazard
Hard solutions
Include constructing debris dams, retaining walls, which increase resisting force, and drainage systems in landslide-prone areas
Soft solutions
Include avoiding landslide hazard areas by proper zoning and land-use regulations
Other solutions
Slope stabilization, reduction of driving forces and re-vegetation which increases resisting forces
Include constructing debris dams, retaining walls, which increase resisting force, and drainage systems in landslide-prone areas
Soft solutions
Include avoiding landslide hazard areas by proper zoning and land-use regulations
Other solutions
Slope stabilization, reduction of driving forces and re-vegetation which increases resisting forces
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