How do you calculate slope stability?
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 are three mechanisms used for slope stabilization?
Finally, four methods are developed and evaluated to improve the slope stability; pile-stabilized slopes, supporting piles with tie-back anchors, supporting piles with retaining walls and benching to rehabilitate slope angle.
What is slope stability in geotechnical engineering?
Slope stability refers to the condition that an inclined slope can withstand its own weight and external forces without experiencing displacement. Slope stability uses principles of soil/rock mechanics, geotechnical engineering and engineering geology. This phenomenon is known as slope failure or landslide.
What increases slope stability?
Stability of slopes can also be improved by: Flattening of slopes results in reduction in weight which makes the slope more stable. Soil stabilization. Providing lateral supports by piles or retaining walls.
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. In Figure 15.2 a block of rock situated on a rock slope is being pulled toward Earth’s centre (vertically down) by gravity.
What are the factors affecting stability of slope?
Slope stability is affected by the following factors….Factors affecting slope stability
- Strength of soil and rock.
- Type of soil and stratification.
- Discontinuities and planes of weakness.
- Groundwater table and seepage through the slope.
- External loading.
- Geometry of the slope.
How can water add stability of slope?
The Role of Water
- Addition of water from rainfall or snow melt adds weight to the slope. Water can seep into the soil or rock and replace the air in the pore space or fractures.
- Water has the ability to change the angle of repose (the slope angle which is the stable angle for the slope).
What is pseudo dynamic test?
The pseudo‐dynamic testing procedure is a simultaneous simulation and control process in which inertia and damping properties are simulated and stiffness properties are acquired from the structure. …
How to calculate slope stability using PLAXIS 2D?
Study of slope failures or investigation of recent landslides will be conducted, and the causes of failure and remedial measures which could have been taken will be suggested. Similarly, stability check for existing slopes will be done and then factor of safety and failure slip circle will be computed using plaxis (2D).
How to calculate slope stability using Monte Carlo?
In this paper, the variability of soil properties and their effect on stability of a natural slope has been studied incorporating the probabilistic analysis using Monte Carlo simulation and deterministic analysis using Geo-Studio and PLAXIS.
When to use reliability analysis of slope stability?
For that purpose, statistical analysis or reliability analysis of slope becomes necessary and should be performed for a particular slope to check the reliability index of that particular slope. Reliability analysis of slope stability has attracted considerable research attention in the past few decades -.
How is the factor of safety calculated in PLAXIS?
The safety factor in Plaxis is computed using phi/c reduction method. Plaxis reduces the soil parameters (friction angle and cohesion) until the soil collapses. A calculation phase with such type is needed to get the safety factor. After running the model, the FS (Sum-Msf in Plaxis) is found when the defined calculation phase is highlighted.