What is the use of Fellenius method in slope stability?

What is the use of Fellenius method in slope stability?

In the method of slices, also called OMS or the Fellenius method, the sliding mass above the failure surface is divided into a number of slices. The forces acting on each slice are obtained by considering the mechanical (force and moment) equilibrium for the slices.

What is Fellenius line?

After obtaining the point Q, the point P is located at a horizontal and vertical coordinates of (4.5H, –H) from the toe. The center of the critical slip surface lies on the extended line of PQ. The line PQ is known as the Fellenius line.

How is slope stability calculated?

If the forces that resist the movement are greater than those driving the movement, the slope is considered stable. A factor of safety (FS) is calculated by dividing the resistance by the driving forces. A factor of safety greater than 1.00 suggests that the slope is stable.

What is meant by slope factor of safety?

The slope stability safety factor refers to the ratio of the soil shear strength to the shear stress of a possible sliding surface in the slope.

What is Morgenstern price method?

Morgenstern–Price is a general method of slices developed on the basis of limit equilibrium. It requires satisfying equilibrium of forces and moments acting on individual blocks. The blocks are created by dividing the soil above the slip surface by dividing planes.

What are the two methods to find slope?

How to Find the Slope of an Equation

  • Finding the Slope of a Linear Equation.
  • Finding the Slope with Two Points.
  • Using Differential Calculus to Find the Slope of a Curve.

What is finite and infinite slope?

Finite slopes. The term infinite slope is used to designate a constant slope of infinite extent. The long slope of the face of a mountain is an example of this type, whereas finite slopes are limited in extent. The slopes of embankments and earth dams are examples of finite slopes.

How do you calculate slope analysis?

To calculate percent slope, divide the difference between the elevations of two points by the distance between them, then multiply the quotient by 100. The difference in elevation between points is called the rise. The distance between the points is called the run. Thus, percent slope equals (rise / run) x 100.

What is a slope stability model?

Slope Stability Model Concept where, m is saturation index which shows the saturation condition of the soil. If the value of m equals to 1, the soil is completely saturated and the value of 0 indicates complete dry condition.

What is FoS slope?

The FoS practically defines when a slope is unstable (FoS < 1.0). If the FoS was a deterministic variable then any value higher than 1.0 would be sufficient to classify a slope as stable.