Causes of failure of earthen dam slideshare

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Causes of failure of earthen dam slideshare

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causes of failure of earthen dam slideshare

You can change your ad preferences anytime. Possibilty of Dam failures. Upcoming SlideShare. Like this presentation? Why not share! Embed Size px. Start on. Show related SlideShares at end. WordPress Shortcode. Published in: Engineering. Full Name Comment goes here. Are you sure you want to Yes No. Zelene Clapton You can hardly find a student who enjoys writing a college papers.

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Become VIP Member. Earthfill dams are less rigid and more susceptible to failure. Like most of engineering structures, earth dams may fail due to various reasons such as faulty design, improper construction and poor maintenance practices, etc.

Different causes of failure of earthfill dams are explained below. The Hydraulic failure of an earthen dam arise due to any of the following causes. Fig 1: Various Causes of Failures of Earth dams. The upstream face of dam may subjected water waves which are formed due to winds and these waves notch-out the soil from upstream face which causes erosion. Sometimes this may also cause slip of upstream slope. To overcome this, stone pitching or rip rap should be provided on upstream face of dam.

The tail water present on the downstream side or cross-currents may come from spillway buckets may affects the downstream toe portion and erosion occurs.

To prevent this problem, stone pitching or rip rap should be provided on the downstream face of dam up to a depth of normal tail water level. To prevent cross currents from spillway, sidewalls of spillway should be constructed with adequate height and length. Hydraulic failure also occurs when the water over-tops the dam crest.Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

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Causes Of Failure Of Earthen Dam Slideshare

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Causes of Failure of Earthen Dam | Geography

Seepage Analysis 6. Seepage Control Measures. SlideShare Explore Search You. Submit Search. Home Explore. Successfully reported this slideshow.

causes of failure of earthen dam slideshare

We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime. Earthen Dam. Upcoming SlideShare.An earthen dam may be failed in the following three ways: 1. Hydraulic Failures 2. Seepage Type Failures 3. Structural Failures. This type of failure generally takes place in the following ways:. The dam is overtopped when the volume of incoming flow into the reservoir is more than the actual storage capacity of the reservoir, or the capacity of spillway is not sufficient.

Sometimes, the faulty operation of spillway also leads to the overtopping problem. Wave action removes the soil particles from the unprotected part of upstream face of the clam, continuously. This is one of the effective factors to cause the hydraulic type failure in earthen dam.

Toe erosion in the earth fill dam, mainly occurs due to following reasons:. This type of failure can be overcome by providing a thick layer of stone riprap on the downstream face upto the height of tail water level.

Causes of Failures of Earthfill Dams

Development of gully in earthen dam is the result of heavy down pour. Such type of failures can be eliminated by providing a proper size of berm, turf or good drainage system towards down-stream side of the dam.

Failure of earthen dam due to seepage phenomena may be due to following two reasons:. The continuous flow of seepage water through the body as well as foundation of the dam is the main reason of piping. It causes catastrophic failures in the earth fill dams. The flow of seepage water through the body of earth dam develop following four effects:.

The flow of seepage water generates an erosive force, which tends to dislodge the soil particles from the dam section. The dislodged particles are migrated into the voids of the filter materials, down-stream side; and thus clogged them, as result the drainage system gets failed. The seepage flow develops differential pore pressure which tends to lift up the soil mass, causing boiling effect in the dam. Piping is also the result of internal erosion of the soil mass due to seepage flow through the earth dam.

The pore pressure developed in the soil reduces the soil strength, which makes the soil mass weak, as result there is failure of dam due to shear force. Sometimes, the leakage from earthen dam also generates the piping type failure.

Furthermore, it is also observed that, the piping type failure is most prominent in those dams, which are poorly constructed. Generally, this is due to poor compaction surrounding the concrete outlets or other parts of the structure etc.

Failure of earthen dam due to sloughing is closely related to the water level in the reservoir.Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details.

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Scott Filostin To get professional research papers you must go for experts like HelpWriting. Amanuale Debebe Show More. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Case studies of failures of earthen dams 1. Cutoffs 2. Core 3. Casing 4. Internal drainage system 5.


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