EARTHEN DAM
Types of Earthen Dam 1. Homogeneous Embankment Type 2. Zoned Embankment Type 3. Diaphragm Type Embankment 1. Homogeneous Embankment Type : - • The simplest type of earthen dam consist of a single material and homogeneous throughout. • Such section is used for low to moderately high dams when only one type of material is economically available. • A purely homogeneous section poses the problems of seepage and huge sections are required to make it safe against piping, stability etc. • Due to this, a homogenous section is generally added with an internal drainage system, such as a horizontal drainage filter. • The internal drainage system keeps the phreatic line (i.e. Top seepage line) well within the body of the dam and permits steeper slopes and thus smaller sections can be used. • The internal drainage is, therefore always provided in almost all types of embankments. 2. Zoned Embankment Type :- • Zoned embankment are usually provided with a cent...