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

Determine the head added by the pump, Primary effluent wastewater at 60 o F...

Primary effluent wastewater at 60 o F (v = 1.217 x 10 -5 ) is pumped to the top of a trickling filter (TF) a total of 75 vertical feet through schedule-40 welded steel pipe. The fl

Explain the coefficient of permeability, A sand deposit of 12 m thick overl...

A sand deposit of 12 m thick overlies a clay layer. The water table is 3 m below the ground surface. In a field permeability pump-out test, the water is pumped out at a rate of 540

Roads, wbm road step by step procedure

wbm road step by step procedure

Dense Bituminous Macadam, What is DBM?Why use DBM where other binder course...

What is DBM?Why use DBM where other binder courses are available?What is composition and advantages of using DBM?

Segmentation, how can we increase revenue to raise on fortune 500 list?

how can we increase revenue to raise on fortune 500 list?

Define the types of sedimentation, Define the Types of Sedimentation 1....

Define the Types of Sedimentation 1. Type I Particles that settle discretely (settle as individual particles) sand, grit Pre-sedimentation for sand prior to co

Question.A , #q strain gauge arrangement is used to measuuestion..

#q strain gauge arrangement is used to measuuestion..

Concrete surround for drainage pipes, Concrete surround is generally adopte...

Concrete surround is generally adopted for rigid drainage pipes to resist high traffic loads (for instance under shallow covers) and to allow for using pipes with lower strength. F

Determine the co-ordinates of grain-size distribution curve, In a hydromete...

In a hydrometer analysis, 0.5 N of soil was mixed in water to form one litre of uniform suspen- sion. The corrected hydrometer reading after a lapse of 60 min. from the start of se

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