Use of combined cyclic-continuous technology in earth-dam construction

AbstractIn the present study, using instrumentation data regarding vertical and horizontal displacement of the dam have been analyzed. Also, the largest and most critical section of the Marvak earth dam is modeled with the behavioral model of the Mohr–Coulomb by GeoStudio software. Numerical modeling of the dam has been done considering the actual embankment conditions and to analyze the changes of the immediate settlement during construction and the consolidation settlement just after construction and initial impounding. The outcomes of instrumentation and numerical analysis at the end of Marvak dam construction showed a settlement between 20 and 500 mm. The results show that the settlement will occur during the construction at the upper levels and the end of construction at the middle levels of the dam. By comparing observed and predicted data, multivariate regression and the explanation coefficient criterion (R2) was found to be R2 = 0.9579, which shows a very good correlation between observed and predicted data, and represents a good match for the settlement points and their location with the initial conditions of the design, and the behavior of the dam in terms of the settlement is found to be stable.

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Analysis the dynamic response of earth dam in free vibration and forced by introducing the effect of the interaction dam foundation

MATEC Web of Conferences ◽

10.1051/matecconf/201814902066 ◽

2018 ◽

Vol 149 ◽

pp. 02066

Author(s):

Boumaiza Malika ◽

Mohamadi Sadika ◽

Ait Ahmed Fatiha

Keyword(s):

Free Vibration ◽

Dynamic Response ◽

Forced Vibration ◽

Earth Dam ◽

Dam Construction ◽

Site Conditions ◽

The Finite Element Method ◽

Dam Foundation ◽

Linear Elastic ◽

Boumerdes Earthquake

The present study concerns the analysis of the dynamic response of earth dam, in free and forced vibration (under the effect of earthquake) using the finite element method. The analysis is carried out at the end of dam construction without filling. The behavior of the dam materials and the foundation is linear elastic. In free vibration, to better understand the effect of the dam foundation interaction, we will take into account different site conditions and see their influence on the free vibration characteristics of the dam. In forced vibration, to study the seismic response of the dam, the system is subjected to the acceleration of the Boumerdes earthquake of May 21, 2003 recorded at the station n ° 2 of the dam of Kaddara in the base, with a parametric study taking into account the influence of the main parameters such as the mechanical properties of the soil: rigidity, density.

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The Influence of the “Hydraton” Method on the Stability of the UPstream Fill in Earth Dam Construction

Géotechnique ◽

10.1680/geot.1955.5.2.194 ◽

1955 ◽

Vol 5 (2) ◽

pp. 194-199

Author(s):

K. F. G. Keil ◽

S. H. Jänke

Keyword(s):

Earth Dam ◽

Dam Construction ◽

The Stability

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Eastmain River Dam—A case history of mass compaction in earth dam construction

Canadian Geotechnical Journal ◽

10.1139/t83-082 ◽

1983 ◽

Vol 20 (4) ◽

pp. 773-781

Author(s):

Peter Rosenberg ◽

J.-Jacques Paré

Keyword(s):

Case History ◽

Control Method ◽

Earth Dam ◽

Dam Construction ◽

River Section ◽

James Bay ◽

The South ◽

Granular Fill ◽

History Of ◽

Compaction Density

The OA-11 dam on the Eastmain River in the James Bay Region of northern Quebec was designed without conventional cofferdams. The river section of the dam was constructed by end-dumping and dozer pushing of granular fill and achieving closure and diversion of the river through a spillway located in a rock abutment on the south bank.The fill was then compacted by using the vibroflotation method. The fill thickness varied from 4.5 to 15 m, the compacted area being 68 000 m2 while the volume was about 725 000 m3.This paper gives the properties of the fill, the equipment used for compaction, the control method used to assure compliance with specifications, and the results of the compaction programme. Keywords: dam construction, compaction, density, vibroflotation, equipment.

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