ดินถล่ม
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ดินถล่ม

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ดินถล่ม ดินถล่ม Presentation Transcript

  • Landslide)
  • Causes of Landslides)
  • Natural causes)- Soil composition)- Steep slope)- Prolong heavy rain)- Heavy snowfall)- Structure of soil)
  • - Glacial erosion, rain, drought) - Vegetationremoval by fire or drought) - Earthquake) - Tsunami) - Volcanic eruption) - Change in undergroundwater) - Change in undergroundstructure) - Coastalerosion and change in continental slope)
  • Human causes ) - Excavation of slpoe orits toe ) Mining ) - - - -
  • - Loadingor building on crest or slope ) - Deforestation ) - Reservoir ) - Change the naturalstream ) -Water from utilities leakages or or drainages ) - Artificial vibration )
  • Types of Landslides ) Falls ) Rock ) Boulder ) Free fall ) Bouncing ) Rolling ) cone-shape )Talus slope
  • Topple )- Creep) Seasonal ) Continuous ) Progressive )
  • Flows ) Debris flow ) Debrisavalanche ) Earth flow ) Mudflow )Torrent ) Lahar
  • Lateralspreading ) Liquefaction )
  • Landslide) Causes of Landslides)4. Types of Landslides )5. - Creep) Flows ) Lateral spreading )