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

Castellated beams – reasons for its widespread usage, Q. Explain about Cast...

Q. Explain about Castellated beams? Castellated beams refer to the type of beams which involve expanding a standard rolled steel section in such a way that a predetermined patt

How the water table may rise to the ground surface, State the size of a squ...

State the size of a square footing at the ground level to transmit a load of 900 kN in sand weighing 18 kN/m 3 and having an angle of shearing resistance of 36° (N  = 46, Nq = 43)

What is the specific gravity of the soil, An oven-dried soil weighing 1.89 ...

An oven-dried soil weighing 1.89 N is placed in a pyknometer which is then filled with water. The total weight of the pyknometer with water and soil is 15.81 N. The pyknometer fill

Influence lines for cantilever beam, fine the influence line for cantilever...

fine the influence line for cantilever beam of span 7 m and load at 2 m?

Explain the cross sectional area of flow, Cross-sectional area of flow (ft ...

Cross-sectional area of flow (ft 2 ) (A) For rectangular channels = (w)(d). For trapezoidal channels, divide the flow area into two side triangles and one center rectangle, so

Cantilever beam, can i use lockfix to making cantilever beam

can i use lockfix to making cantilever beam

Variations of tendon stresses in pre tensioned concrete, Variations of tend...

Variations of tendon stresses in pre or post-tensioned concrete Variations of tendon stresses in pre or post-tensioned concrete members, along the length of tendons, may be of

Maintenance of gravel roads, Maintenance of Gravel Roads: The mainten...

Maintenance of Gravel Roads: The maintenance consists of : filling up of potholes/depressions with fresh gravel and compacting after light sprinkling with water. g

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