What is slope stability of soil?
Slope stability refers to the condition that an inclined slope can withstand its own weight and external forces without experiencing displacement. When the stability conditions are not met, the soil or the rock mass of the slope may experience downward movement which could be either slow or devastatingly rapid.
How do you stabilize the slope of soil?
CAN utilises several methods for slope stabilisation including:
- Soil nailing. This is a cost effective method for long-term stabilisation of over-steepened soil slopes, on or around your site.
- Slope drainage. Slope drainage is an important part of ensuring the future stability of a slope.
- Facing systems.
What is the most effective way to stabilize a slope?
Establishing vegetation can be a very effective way to stabilize a slope. Plant roots help anchor the soil and reduce compaction, allowing precipitation to infiltrate rather than flow down the slope.
What factors affect 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.
Why Is slope unstable?
The Role of Water Water can seep into the soil or rock and replace the air in the pore space or fractures. Since water is heavier than air, this increases the weight of the soil. Weight is force, and force is stress divided by area, so the stress increases and this can lead to slope instability.
How can you protect a slope from erosion?
Techniques for steep slopes include wood retaining walls, interlocking concrete blocks, rock retaining walls, riprap (loose rock) areas, and terracing. If you choose wood, make sure the wood is treated with a wood preservative to prevent rotting.
What are three factors that decrease slope stability?
Weathered geology: Weak, weathered bedrock, jointed rock, or bedrock that dips parallel to the slope can decrease stability. Vegetation removal: Droughts, wildfires and humans can remove vegetation from the slope, decreasing stability. Freeze/thaw cycles: Water in rock joints or in soils can decrease slope stability.
What are the four different types of slope?
There are four different types of slope. They are positive, negative, zero, and indefinite.
What is factor of safety slope stability?
A value of factor of safety greater than 1.0 indicates that capacity exceeds demand and that the slope will be stable with respect to sliding along the assumed particul ar slip surface analyzed. A value of factor of safety less than 1.0 indicates that the slope will be unstable.
What is slope stability safety factor?
The stability of a slope is essentially controlled by the ratio between the available shear strength and the acting shear stress, which can be expressed in terms of a safety factor if these quantities are integrated over a potential (or actual) sliding surface. A slope can be globally stable if the safety factor,…
What is slope stability in geology?
Slope stability. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology.