DEFORMATION OF EARTH AND ROCKFILL DAMS

The different types of deformation are described, and the reasons for measuring deformations are discussed. A brief description is given of the instrumentation for measuring movements within earth and rockfill dams. The limitations of surface-movement measurements are given, and internal movement measurements are reviewed. A detailed description of the Mammouth Pool Dam covers aspects such as instrumentation, settlement and compression, horizontal movements, and the movement at abutment contact. Details are also given of the upstream-downstream movements and post construction movements. A general description is given of the El Infiernillo Dam, together with details of instrumentation used, compression of core and rockfill, construction movements, movements during first filling of reservoir, postconstruction movements, longitudinal strains of the crest, and miscellaneous data. Similar details are discussed of the Netzahulcoyot Dam, Muddy Run Embankment, and the Akosombo Dam. All these dams whose cores were supported by bedrock or other relatively unyielding foundation, were of adequate design. A graph is presented which illustrates the compressibility of the core and shells of the dams. For minimum settlement during and after construction, the shells of a dam should be constructed of well-graded, unweathered, hard rock or of sand and gravel. The fill should be spread in layers, watered or sluiced and well compacted. Conclusions based on the observations are presented, particularly as related to movements of boundaries, influence of abutment irregularities, development of crest extension and compression strains, the ratio of horizontal to vertical deformation, and axis alignment.

  • Corporate Authors:

    John Wiley & Sons, Incorporated

    111 River Street
    Hoboken, NJ  United States  07030-6000
  • Authors:
    • Wilson, S D
  • Publication Date: 1973

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Filing Info

  • Accession Number: 00096422
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 15 1975 12:00AM