What are 3 factors that make slope failure more likely

Steepness of the Slope. It goes without saying that the steeper a slope is, the more unstable it will be. … Water and Drainage. Water is several times heavier than air. … Soil Composition. … Joints & Fractures.

What are the factors leading to failures of slope?

The important causes of failure of slopes and lead to instability are describes below: Gravitational force (Creep) Force due to seepage water (Swelling / Leaching) Erosion of the surface of slopes due to flowing water.

What are the different types of failure in a slope?

Rotational failure. When rotational failure occurs, the failed surface will begin to move outwards and downwards. …
Translational failure. …
Compound failure. …
Wedge failure.

Which three factors are used to classify a slope failure?

There are three criteria used to classify slope failures:
The type of material that failed (e.g., bedrock or unconsolidated sediment),
The mechanism of the failure (how the material moved as it failed), and.
The rate of movement (how quickly the material moved).

Which of the following are types of slope failure?

Translational Failure.
Rotational Failure.
Flow Failure.
Block or Wedge Failure.
Rock Slope Failure.
Plane Failure.
Toppling Failure.
Rock Failure.

Which three conditions most commonly contribute to mass wasting?

Faults or other geologic structures that weaken the rock. Topography, such as steep slopes or cliffs. Climate, with large temperature swings, frequent freezing and thawing, or abundant rainfall. Lack of vegetation.

What are the three types of mass wasting?

The most common mass-wasting types are falls, rotational and translational slides, flows, and creep.

What are the external and internal causes of failure of slopes?

Apart from external triggers like heavy rains, earthquakes, construction projects, there are also internal causes for slope failures. Slopes lose strength over time through numerous events and certain lithologies lend itself more to specific types of failure.

What are the factors affecting mass wasting?

Such factors include: weathering or erosional debris cover on slopes, which is usually liable to mass movement; the character and structure of rocks, such as resistant permeable beds prone to sliding because of underlying impermeable rocks; the removal of the vegetation cover, which increases the slope’s susceptibility …

What are typical failures in geotechnical engineering?

According to Khan (2005, geotechnical failures can result from foundation factors such as change in water table, progressive soil erosion, soil heterogeneity, excavation activities, burrowing by animals, liquefaction of soil, and natural disasters such as earthquakes and landslides.

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What is slope failure mining?

Slope failure relates to horizontal sliding upon critical interfaces. • Considering residual shear strength along the interfaces is the state of practice. • Stratigraphy dipping, tectonics, and water pressures also affect the stability.

Which of the following is the most important factor in causing mass movement?

Gravity is the main force responsible for mass movements. Gravity is a force that acts everywhere on the Earth’s surface, pulling everything in a direction toward the center of the Earth.

Which of the following increases the risk of mass wasting?

Mass wasting is prone in the spring-time when snow melt, water saturation, and runoff is greatest. Also the type of climate will help determine the type of mass wasting. Humid climates tend to have slides, where water-saturated slopes fail and fall. Drier climates tend to have rocks that fall; especially early spring.

What are the 4 types of mass movement?

Rockfall. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering.
Mudflow. Saturated soil (soil filled with water) flows down a slope.
Landslide. Large blocks of rock slide downhill.
Rotational slip. Saturated soil slumps down a curved surface.

What factors influence slope stability?

Slope stability is ultimately determined by two factors: the angle of the slope and the strength of the materials on it.

How does climate affect slope development?

Climate plays a pivotal role in shaping slopes. Its a broad term covering temperature and precipitation. Climate also influence weathering types and vegetation density.

What are the factors affecting landslides?

The primary external factors that can trigger a landslide include: (1) weathering of rock strata; (2) increased pore water pressure, such as the infiltration of rainwater or rise of groundwater surface; (3) increased loading by, for example, rainfall, accumulated snow or flourish vegetation; (4) the supporting forces …

What are the factors that commonly trigger mass movements?

Among the factors that trigger mass movements are saturation of surface materials with water, oversteepening of slopes, removal of vegetation, and earthquakes.

Why do earth slopes fail?

Seepage into the soil within a slope can increase the water content of the soil, thereby increasing its weight. If this increase in weight is considerable, specifically with the combination of other forces, it can lead to slope failure.

When face failure of slope occurs the slip surface passes through?

Further rotational failure may occur in three different ways : Slope failure or Face Failure:- The failure which occurs along the surface that passes through the toe is known as slope failure. It occurs when soil above the toe contains a weak stratum. In this case, the failure plane intersects the slope above the toe.

What is depth factor in slope stability?

b) Slope depth. c) Depth failure. d) Base failure. Explanation: The ratio of the total depth (H + D) to depth H is called the depth factor Df.

How do you mitigate slope failure?

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.

What is slope stability in mining?

Slope stability is an important consideration in the management of many types of mining operations or civil engineering projects. Slope Stability – By definition, slope stability is a measure of how resistant a natural or man-made slope is to failure due to collapse or sliding.

What is slope stability in geotechnical engineering?

Slope stability is the potential of a naturally occurring or engineered soil slope (for example, embankments, cuttings, open-pit mining, excavations, landfills, etc.) to withstand ground movement. A previously stable slope may become unstable, leading to mass movement.

What is a type of mass failure in which a superficial mass fails by moving as a whole along a definite surface of failure called?

What is a type of mass failure in which a superficial mass fails by moving as a whole along a definite surface of failure called? Explanation: A true landslide is a type of mass failure in which a superficial mass fails by moving as a whole along a definite surface of failure.

Which factor most likely facilitates mass movement after heavy rains in a dry region?

Which factor most likely facilitates mass movement after heavy rains in a dry region? Sediments are carried from a hilltop to the ground at the bottom of the hill on a windy day.

Why are landslides more common on steep slopes?

A landslide occurs because the force of gravity becomes greater than either friction or the internal strength of the rock, soil, or sediment. … Pushing the rock is easier if the surface slopes downhill or is slippery. The same is true for landslides—steeper slopes have less friction, making landslides more common.

How does vegetation help stabilize a slope?

Vegetation helps stabilize forested slopes by providing root strength and by modifying the saturated soil water regime. Plant roots can anchor through the soil mass into fractures in bedrock, can cross zones of weakness to more stable soil, and can provide interlocking long fibrous binders within a weak soil mass.

Is landslide a mass movement?

A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of “mass wasting,” which denotes any down-slope movement of soil and rock under the direct influence of gravity. … These landslides are called submarine landslides.

What causes mud flow?

Mudflows can be caused by unusually heavy rains or a sudden thaw. They consist mainly of mud and water plus fragments of rock and other debris, so they often behave like floods. They can move houses off their foundations or bury a place within minutes because of incredibly strong currents.

Which of the following degradation processes describe the down slope movement of rocks soil and regolith?

Mass Wasting Processes. Mass Movement is defined as the down slope movement of rock and regolith near the Earth’s surface mainly due to the force of gravity.