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

Grillage foundation, what are the advantages of grillage foundation and why...

what are the advantages of grillage foundation and why people prefers that?

Theorem of three moments, Theorem of three moments: You have been intr...

Theorem of three moments: You have been introduced to the analysis of one of the important class of structures, namely Statically Indeterminate Structures. You have been intro

Settlement due to lowering of water table, Q. Settlement due to Lowering of...

Q. Settlement due to Lowering of Water Table? Water table is encountered with, whenever any excavations are made for foundations. The water is to be out for working conditions.

Staircase, The Figure 1 below shows a section through a stairway for a gara...

The Figure 1 below shows a section through a stairway for a garage in a new proposed dwelling. The stairway is 3 meters wide with 300 mm wide treads(7 treads) and 170 mm high riser

Calculate the monthly payment for home mortgage, Your home mortgage is $300...

Your home mortgage is $300,000 for 30 years with a nominal annual rate of 7%. The monthly payment is most nearly: Solution: n = 360 months interest = 7%-annual ÷ 12-months/year

What is thermo-electric prestressing, What is Thermo-electric prestressing ...

What is Thermo-electric prestressing We know that, stretched tendons are used in prestressed concrete. Stretching of tendons may be accomplished by using jacks or by other mea

Total volume of soil that excavated from the borrow area, Project specifica...

Project specifications require a relative compaction of 95% (modified Proctor).  Construction of a highway embankment requires 10,000-yd 3 of fill.  The borrow soil has an in-situ

Plumbing technology, This assessment will test Learning Outcomes 3 and 4 as...

This assessment will test Learning Outcomes 3 and 4 as well as the component of Learning Outcome 1 as it refers to waste disposal for the Plumbing Technology. The student is expect

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