Construction and Monitoring of Cement/Bentonite Cutoff Walls: Case Study of Karkheh Dam, Iran

• Autorzy: Faridmehr Iman , YazdaniPour Mohammad Reza , Jokar Mohammad Javadi , Ozbakkaloglu Togay

Identyfikatory

DOI

10.2478/sgem-2019-0019

• Języki publikacji: EN

Abstrakty

EN

Water seepage is one of the most important features of embankment dams. To prevent and reduce seepage, it is necessary to seal the dam. Plastic concrete cutoff walls are one of the most efficient methods in waterproofing the foundation of embankment dams on permeable alluvial substrates. Sufficient resistance to loads, low permeability to maintain dam sealing, high ductility compatible with the foundation and deformation under load without cracking are the main requirements in plastic concrete cutoff walls. In this paper, the construction and implementation of the cutoff wall of Karkheh Dam, which is one the world's largest water sealing projects, was studied. In addition, a numerical model using Seep-3D software was developed to evaluate the efficiency of the cut-off wall to decrease the seepage over the dam's foundation. The numerical results validated by instrumentation statistics resulted from 17-years dam operation. According to the results, after the drainage of the reservoir, the cutoff wall optimally reduced the hydraulic gradient by 0.08 from 2.35 and the water leakage by 3.1 m/s from 18.3 m/s.

Słowa kluczowe

EN

cutoff wall; permeation; Karkheh Dam; sealing; hydrofraise

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2019
• Tom: Vol. 41, nr 4
• Strony: 184--199
• Opis fizyczny: Bibliogr. 23 poz., tab., rys.

Twórcy

autor

Faridmehr Iman

• South Ural State University, 454080 Chelyabinsk, Lenin Prospect 76, Russian Federation

autor

YazdaniPour Mohammad Reza

• Production Operation Company of Karkheh Dam Hydropower Plant, Andimeshk, Khuzestan, Iran

autor

Jokar Mohammad Javadi

• Production Operation Company of Karkheh Dam Hydropower Plant, Andimeshk, Khuzestan, Iran

autor

Ozbakkaloglu Togay

• School of Engineering and Technology, University of Hertfordshire, UK

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).