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

Storm water drainage - Road drainage and maintenance, Storm Water Drainage:...

Storm Water Drainage: In city streets, the disposal of rain water has to be done through a system of underground storm water drains. The water is collected at the roadside ke

Curing, curing of brick masonry

curing of brick masonry

Size of drainage near roads, how to calculate the size of drainage(box) wid...

how to calculate the size of drainage(box) width and height?

Define fatigue load test of shock transmission unit, Define Fatigue load te...

Define Fatigue load test of shock transmission unit? This test was carried out for 100,000 cycles for maximum capacity of STU, assuming the worst case that the 'Lock Up Load' i

Define cleaning for underwater inspection of bridge, Define Cleaning for Un...

Define Cleaning for Underwater Inspection of Bridge? Before any structure can be inspected, it is necessary to expose the surface material of the structure. Wherever there is m

Explain subcritical flow and supercritical flow, Explain Subcritical flow a...

Explain Subcritical flow and Supercritical flow Subcritical flow: The depth of flow is greater than critical depth and the velocity of the fluid is slow. Also termed "tranquil"

Traditional granular sub-base, Question For rigid pavement, what is rec...

Question For rigid pavement, what is recompense of using lean concrete sub-base instead of traditional granular sub-base? Answer There are some shortcomings of using

Explain about vierendeel girder, Q. Explain about Vierendeel girder? Vi...

Q. Explain about Vierendeel girder? Vierendeel girder design is sometimes adopted in design of footbridges. Traditionally truss design, triangular shape of truss is generally u

Water bound macadam road, What is the binding material of the water bound m...

What is the binding material of the water bound macadam road

Quantity calculation for subgrade preparation, reparation of subgrade in sq...

reparation of subgrade in sqm for a road of span 12 km and width 5.25m,with shoulders of 0.75m span on both the sides...considering extrawidening too......plz help...i m preparing

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