Slope Stability Definition

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Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. ... Similarly, a slope can be locally stable if a safety factor larger than 1 is computed along any potential sliding surface running through a limited portion of the slope (for instance only within its toe).

How do you determine stability of slope?

Stability is determined by the balance of shear stress and shear strength. If the forces available to resist movement are greater than the forces driving movement, the slope is considered stable. A factor of safety is calculated by dividing the forces resisting movement by the forces driving movement.

What factors affects slope stability?

Five factors influence slope stability of an embankment: 

  1.  Shear strength of the soil
  2.  Unit weight
  3. Embankment height; 
  4.  Slope steepness; and 
  5. Pore pressure within the soil.

Which method are used for stability analysis?

The limit equilibrium method is the widely used and accepted slope stability analysis method. It was adopted to verify our method for a unit width slope with a thin-layer shear plane.

What are three type of slope failure?

Types of Slope Failures
  1. Translational Failure
  2. Rotational Failure
  3. Wedge Failure
  4. Compound Failure.

What do you mean by slope stability?

Slope stability is the potential of soil covered slopes to withstand and undergo movement. Stability is determined by the balance of shear stress and shear strength. ... Triggering factors of a slope failure can be climatic events which can then make a slope unstable, leading to mass movements.

What do human activities affect slope stability?

Landslides are commonly natural events. Yet, human actions may reduce the stabilityof slopes and even trigger landslide events. In many cases landslides were caused because people have built structures near or on unstable slopes. Various types of human activities may favour and/or trigger mass movement processes.

What is stability number?

It is the method used to evaluate slope stability for homogeneous soils having cohesion. This method is proposed by the Taylor. It is based on the principle resistance of soil mass against sliding, because of cohesion and internal friction acting over the failure plane.

What triggers slope failure?

Factors that can trigger slope failure include hydrologic events (such as intense or prolonged rainfall, rapid snowmelt, progressive soil saturation, increase of water pressure within the slope), earthquakes (including aftershocks), internal erosion (piping), surface or toe erosion, artificial slope loading.





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