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

Soil classification - road materials, Soil Classification: Based on p...

Soil Classification: Based on particle size, the soils can be classified as under, adopting the IS soil classification system: 0.002   0.075   0.425   2.36     4.75

Raft foundation, after formation of the soil under raft some area around th...

after formation of the soil under raft some area around the lift pit for example will be on tipping shape and some column placed in the same area the question how we place the col

Cutting edge in well foundation, Q. Cutting edge in well foundation? Th...

Q. Cutting edge in well foundation? The function of cutting edge on well foundation is basically to cut through the earth which being sunk. The angle of well curb pushes the ea

Embankment, Describe the various steps in embankment construction.

Describe the various steps in embankment construction.

Functions of water stops in joints of box culverts, Question What will func...

Question What will functions of water stops in joints of box culverts and drainage channels ? Answer Principal function of water stops is to stop liquids, water-borne materials

Concrete cover to enhance fire resistance, Q. Concrete cover to enhance fir...

Q. Concrete cover to enhance fire resistance? In the event of exposing concrete structures to a fire, a temperature gradient is established across the cross section of concrete

What is diamond crossing, Q. What is Diamond Crossing? Diamond Crossing...

Q. What is Diamond Crossing? Diamond Crossing is provided when two tracks cross each other either of the same gauge or of different gauges. It consists of two acute crossing (

STRUCTURAL DYNAMICS, Consider a diver weighing 200 Ib at the end of a divin...

Consider a diver weighing 200 Ib at the end of a diving board that cantilevers out 3 ft. The diver oscillates at a frequency of 2 Hz. What is the flexural rigidity E I of the divin

Analyse the state of stress at the critical section, Analyse the state of s...

Analyse the state of stress at the critical section: A prismatic bar of circular section with 80 mm diameter is subjected to bending moment of 5 kN-m and a torque of 7 kN-m. A

Foundation, what are factors that affect bearing capacity of a shallow foot...

what are factors that affect bearing capacity of a shallow footing

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