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Okayama University (2009)

Application of silica grouting to underground dam construction for groundwater accessibility and sustainability in arid and semi-arid area

APAMBILLA AKUDAGO JOHN

Titre : Application of silica grouting to underground dam construction for groundwater accessibility and sustainability in arid and semi-arid area

Auteur : APAMBILLA AKUDAGO JOHN

Université de soutenance : Okayama University

Grade : Doctoral Thesis 2009

Présentation
The thesis is broken down into five chapters. Chapter 1 gives a brief introduction and purpose of the research. Chapter 2 gives a literature review on groundwater exploitation and depletion, underground dams, and methods of combating salinity. The conclusion in this chapter summarizes the need for underground dams, selection of sites, construction methods, and possible ways to reduce groundwater-soil salinity transfer in such sites. Chapter 3 discusses proposed mathematical formulae and laboratory results for constructing the cut-off wall of underground dams using silica grout. Determination of the radius of pitch required to ensure a well sealed cut-off wall is also discussed. This chapter concludes with the summary of the findings from the laboratory experiments. Chapter 4 discusses capillarity and its effect on groundwater sustainability, especially with respect to evaporation and salinity issues. The use of coarse material to construct capillary cut layer is also well elaborated with results from laboratory tests discussed. This chapter also discusses some important criteria for the choice of filter material for the capillary cut. Chapter 5 deals with designing of the freeboard, management and maintenance of the underground dam, general conclusions and recommendations.

Annonce -> http://ousar.lib.okayama-u.ac.jp/en... ]

Résumé de la thèse

Page publiée le 19 octobre 2016, mise à jour le 19 avril 2020