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How do landslides occurs?
How do landslides occurs?
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Landslide is that the rushing movement of soil, rock from any higher place or mountain. Landslides occur when gravitational and other forms of shear stresses within a slope exceed the shear strength of the materials that form the slope. Some other causes landslides is heavy rainfall, erosion, poor construction practices, freezing and thawing, earthquake shaking, and volcanic eruptions. Some landslide happen slowly and a few of happen rapidly.
Heavy Rainfall:- Landslide can happen due to heavy rainfall. Rainfall can make soil wet and weak. Sometimes soil gets washed or eroded by rainfall. therefore the lands which become weak come down during a rush which cause landslides.
Erosion:- Erosion can cause landslides. Sometimes due to heavy rainfall or infertility of soil. this type of landslide happens slowly. Lands become weak by the erosion and are available down gradually due to the gravity.
Earthquake:- Earthquake are often a big cause for the landslide. During the earthquake everything within the land started moving. due to some heavy weaves the soil and rock on the land become so weak. So eventually they’re available down by gravity and cause landslides.
Volcano Erosion:- Volcano erosion is a very major cause in landslides,during the erosion it release molten rock,gases,which make the land weak. Magma puts out volcanic gases that sometimes release in groundwater, leading to a hot acidic hydrothermal system that weakens rock by altering minerals to clay.
Poor construction practice:- Sometimes poor construction practice can cause landslides. Construction activities like buliding railway Or bulidings may change the natural movement of water. When there’s heavy rainfall or flood, water may then move to a special path which can saturate slopes and cause landslides.