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

Rcc lintel, how to make a leakproof joint with existing lintel

how to make a leakproof joint with existing lintel

Bearing pressure on soil nail, Question What is relation of bearing pr...

Question What is relation of bearing pressure on soil nail head to ratio La/Lb, where La is length of soil nail before potential slip circle as Lb is length of soil nail beyo

Define the cost of shock transmission unit, Define the Cost of shock transm...

Define the Cost of shock transmission unit? There is a keen competition among the few STU manufacturers. For the second Bassein Creek Bridge, the average cost of two STUs of ca

Transportation engineering, what is difference between stopping sight dista...

what is difference between stopping sight distance and overtaking sight distance

Duration activity for cast-in-place foundation formwork, A concrete contrac...

A concrete contractor historical records show that the construction duration for a cast-in-place foundation formwork is 1,000-SF/crew-day. Determine the number of days a 200,000-SF

Underwater inspection procedures - inspection of bridge, Explain the Underw...

Explain the Underwater inspection procedures - inspection of bridge? Under-water bridge inspection, especially the initial inspection, requires careful planning to ensure that

Digit of cells for concrete box girder bridges, Question How does an engine...

Question How does an engineer determine digit of cells for concrete box girder bridges ? Answer If depth of a box girder bridge exceeds 1/6 or 1/5 of bridge width, then it is o

Classification of timber based on grading, Classification Based on Grading:...

Classification Based on Grading: IS 883-1970 classifies the structural timber into 3 grades-select grade, grade I and grade II. The classification is depend on, defects, permi

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