Quick Answer: What Is Wedge Failure?

What are the three types of slope failure?

Types of Slope FailuresTranslational Failure.Rotational Failure.Wedge Failure.Compound Failure..

What is rock slope failure?

• Slope failure, also referred to as mass wasting, is the. downslope movement of rock debris and soil in response to gravitational stresses. Three major types of mass wasting are classified by the type of downslope movement: falls, slides, and flows.

What are slope failures?

A slope failure is a phenomenon that a slope collapses abruptly due to weakened self-retainability of the earth under the influence of a rainfall or an earthquake. Because of sudden collapse of slope, many people fail to escape from it if it occurs near a residential area, thus resulting in a higher rate of fatalities.

Which type of stress is plane stress?

There are no normal and shear stresses on the two planes perpendicular to the z direction. This system is known as plane stress. It is sometimes referred to as a two-dimensional or bi-axial stress system.

What is Mohr Coulomb failure envelope?

The Mohr-Coulomb failure envelope is a constitutive model suitable for describing the strength of many soils, intact rock, and rock masses. Values of cohesion’ and φ’ for different grounds including the range of confining pressure for which these apply are given in the chapter on Mechanical Properties.

How do you overcome slope failure?

Below are some of the common methods used for slope failure mitigation and repair:Drainage. Contractors who know what they’re doing will always draw up drainage plans to complement their slope repair plans. … Terracing & Benching. … Retaining Walls. … Friction Piles. … Sheet Piling. … Rock Bolts. … Shotcrete. … Geo-grid.More items…•

What is circular failure?

Circular failure is one of the most probable instabilities on slopes with severely crushed rock or soil slopes. … In some slopes, a soil mass has direct contact with the rock mass with the potential of block–flexural failure. If so, the total slope failure potential is the combination of circular–toppling failure.

Where does the failure plane lies?

While in rock the failure plane is predetermined, in soil failure, the failure plane occurs along the line of maximum stress. There is a theory that all slopes are inherently unstable and it is only a matter of geologic time that slope failure occurs.

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 (for …

How do you stabilize slopes?

Slopes can be stabilized by adding a surface cover to the slope, excavating and changing (or regrading) the slope geometry, adding support structures to reinforce the slope or using drainage to control the groundwater in slope material.

Why does the brittle material fails in helicoidal shape?

Case-5: Brittle material in torsion • Since, brittle materials have minimum tensile strength. Hence, brittle materials fails in tension. Hence brittle material subjected to torsion fails at 45° plane (Helicoidal failure). … In torsion test maximum shear stress is in the direction perpendicular to longitudinal axis.

Which feature can strengthen slopes?

Plant roots add strength and cohesion to slope materials. They act like steel rebar reinforcements in concrete and increase the resistance of a slope to landsliding. Vegetation also adds weight to a slope. Water is almost always directly or indirectly involved with landslides, so its role is particularly important.