Man-Induced Landslides
• Causes, Impacts, and Prevention
Introduction
• Definition: Landslides triggered by human
actions.
• Importance: Understanding causes can help
prevent disasters.
Natural vs. Man-Induced
Landslides
• Natural: Due to rainfall, earthquakes, volcanic
activity.
• Man-Induced: Result from deforestation,
construction, mining, etc.
Major Human Activities Causing
Landslides
• 1. Deforestation
• 2. Unplanned construction
• 3. Mining & quarrying
• 4. Poor drainage systems
• 5. Agricultural practices
• 6. Overloading of slopes
Deforestation
• Loss of root strength in soil
• Increased erosion
Unplanned Construction
• Load increases on slope
• Cutting into hillsides weakens stability
Mining & Quarrying
• Blasting and excavation destabilize terrain
• Example: Stone quarries in Western Ghats
Poor Drainage Systems
• Accumulation of water increases slope weight
• Raises pore water pressure
Agricultural Practices
• Terracing without support
• Over-irrigation weakens soil layers
Case Studies
• Uttarakhand, India
• Kerala landslides
• Nepal Himalayan region
Impacts of Man-Induced Landslides
• Loss of life and property
• Infrastructure damage
• Economic loss
• Environmental degradation
Prevention & Mitigation
• Reforestation
• Sustainable development planning
• Proper drainage systems
• Retaining walls
• Environmental Impact Assessment (EIA)
Conclusion
• Human activities significantly contribute to
landslides
• Proper planning and care can prevent
disasters
References
• Research papers, government reports, news
articles (optional)
Thank You
• Questions and Discussion