20

Embankment Dams

CHAPTER HIGHLIGHTS

Types of embankment dams – Components of embankment dams – Other embankment details – Flow nets for earth dams – Design criteria for earth dams: safety against over-topping – Control of seepage and pressure in earth dams – Stability of upstream and downstream slopes – Selection of dam section: Earth dams – Rockfill dams

20.1 INTRODUCTION

Embankment dams are water impounding structures. These are flexible structures which can deform slightly to conform to the deflection of the foundation. Embankment dams are primarily made out of earth and rock fragments. Thus, the term embankment encompasses both earth and rockfill dams. These dams are also referred to as dykes or simply embankments or banks. Earth dams ...

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