Session Start Date

5-6-1984

Abstract

This paper discusses the behaviour (settlement, high foundation pore pressure, horizontal displacement and seepage) of two dykes founded on a thick clay deposit, since their completion in December, 1958 to date. In the first case, coarse and fine sand layers successively cover an over sixty meters thick clay deposit; in the second case, an eight to thirty meters thick clay layer is underlain by a heterogeneous granular deposit. Foundation treatments including problems encountered during the foundation works are discussed. Results of static and pseudo-static analyses carried out using the measured high pore pressures are compared with the factors of safety obtained during design. General conditions of the dykes together with the remedial works carried out to repair the upstream slope protection of dyke No. 1 are reviewed. The factors leading to the disintegration of the downstream rip-rap of dyke No.2 areal so discussed.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

First Conference

Publisher

University of Missouri--Rolla

Publication Date

5-6-1984

Document Version

Final Version

Rights

© 1984 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

 
COinS
 
May 6th, 12:00 AM

Dykes on Clay Foundation at Bersimis 2

This paper discusses the behaviour (settlement, high foundation pore pressure, horizontal displacement and seepage) of two dykes founded on a thick clay deposit, since their completion in December, 1958 to date. In the first case, coarse and fine sand layers successively cover an over sixty meters thick clay deposit; in the second case, an eight to thirty meters thick clay layer is underlain by a heterogeneous granular deposit. Foundation treatments including problems encountered during the foundation works are discussed. Results of static and pseudo-static analyses carried out using the measured high pore pressures are compared with the factors of safety obtained during design. General conditions of the dykes together with the remedial works carried out to repair the upstream slope protection of dyke No. 1 are reviewed. The factors leading to the disintegration of the downstream rip-rap of dyke No.2 areal so discussed.