Landslides induced by rainfall, Civil Engineering

Assignment Help:

Landslides induced by rainfall

After rainfall, groundwater pressure is built up and this elevates ground water table. Water inside the pores of soil reducesthe effective stress of soils. As shear strength of soils is represented by the subsequent relations:

Shear strength = cohesion + effective stress x tan where Φ is the friction angle of soils

Therefore the presence of water causes a decrease of shear strength of soils and this may lead to landslide. Instead rainfall creates immediate instability by causing erosion of slop surface and results in shallow slope failure by infiltration. Additionally the rain may penetrate slope surface openings and forms flow paths. Consequently this may weaken the ground.


Related Discussions:- Landslides induced by rainfall

Time to remove formwork to cater for early thermal movement, Q. Time to rem...

Q. Time to remove formwork to cater for early thermal movement? Let's take a circular column as an illustration to explain effect of internal restraint to thick sections.  W

Poly tetra fluoro ethylene, Question Why Poly tetra fluoro ethylene (PTFE...

Question Why Poly tetra fluoro ethylene (PTFE) is usually used in sliding bearings? Answer The choice of sliding surface of bearings is of very important importance since slid

Illustrate the concept of load balancing, Concept of load balancing In ...

Concept of load balancing In above cases of concentric and eccentric pre-stressing, straight tendon profiles (or tendon shapes) along the beam span have been considered. If a t

Stress-strain curves represents a soft and weak material, Which of the foll...

Which of the following stress-strain curves represents a soft and weak material?   Solution: As depicted, stress is on the y-axis while the x-axis represents strain.Whe

Support reaction, different types of support force & effect of hinge suppor...

different types of support force & effect of hinge support

Explain transpiration and infiltration, Explain Transpiration and Infiltrat...

Explain Transpiration and Infiltration Transpiration: The part of evaporation in which water vapor enters the atmosphere through the plants. The "transpired" water originated

What are the uses of groynes, They stop, or slow down erosion, and stop lon...

They stop, or slow down erosion, and stop long shore drift. This, though, can have bad knock-on effects somewhere near.

Assignment, industrial applications of ultrasonic welding,soldering,drillin...

industrial applications of ultrasonic welding,soldering,drilling,claning

Simply supported beam, draw the shear force and bending moments of a beam

draw the shear force and bending moments of a beam

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd