Slope Stability Quiz

What are the three main types of slope failures?

• rockfalls, slides, flows

• subsidence

• avalanches

• creep

How does water affect slope stability?

• Water increases soil cohesion

• Water decreases pore water pressure

• Water affects slope stability by increasing pore water pressure, reducing soil cohesion, and increasing soil weight.

• Water has no impact on slope stability

What role does vegetation play in slope stability?

• Vegetation helps in reducing soil erosion, increasing soil cohesion, and absorbing excess water.

• Vegetation increases soil erosion

• Vegetation decreases soil cohesion

• Vegetation has no impact on slope stability

Explain the method of slices in slope stability analysis.

• In the method of slices, only horizontal forces are considered

• Slices are not used in slope stability analysis

• The method of slices involves analyzing the stability of the entire slope at once

• The method of slices in slope stability analysis involves dividing the soil mass into vertical slices, calculating the forces acting on each slice, and determining the factor of safety for each slice. By analyzing the stability of each slice, the overall slope stability can be assessed.

What is the factor of safety in slope stability?

• Resisting forces / Driving forces

• Driving forces / Resisting forces

• Shear forces / Normal forces

• Safety forces / Stability forces

Discuss the impact of seismic activity on slope stability.

• Seismic activity only affects flat surfaces, not slopes

• Seismic activity has no impact on slope stability

• Seismic activity can weaken the materials holding the slope together, increasing the likelihood of slope failure.

• Seismic activity always strengthens the materials holding the slope together

How does the angle of repose relate to slope stability?

• The angle of repose is directly related to slope stability as slopes with angles greater than the angle of repose are prone to mass wasting events.

• Slope stability is only affected by the amount of rainfall

• Slope stability is determined solely by the type of vegetation present

• The angle of repose has no impact on slope stability

What is the significance of pore water pressure in slope stability?

• Pore water pressure weakens the soil and increases the likelihood of slope failure.

• Pore water pressure only affects the color of the soil.

• Pore water pressure has no impact on slope stability.

• Pore water pressure strengthens the soil and reduces the likelihood of slope failure.

Describe the concept of slope stability charts.

• Slope stability charts are only applicable to flat terrains

• Slope stability charts are used to predict earthquake occurrences

• Slope stability charts are graphical tools used to assess the stability of slopes based on factors like slope angle, soil type, and water content.

• Slope stability charts are based solely on vegetation cover