Meaning of Seepage: The movement of water through soil is referred to as seepage. The total head at any point of a saturated soil mass, through which water is flowing consists of- (i) Velocity head; (ii) The piezometric head; and (iii) The datum head. Since the velocity through soils is very small, the velocity head is generally neglected. Flow will [...]
Construction of Flow Net for Seepage Analysis! Laplace's Equation: The equation is used in the construction of flow net. Assumptions: 1. Flow is two dimensional. 2. Water and soil are incompressible. 3. Soil is isotropic and homogeneous. 4. The soil is fully saturated. 5. The flow is steady, i.e., flow conditions do not change with time. 6. Darcy's law is [...]
In this article we will discuss about the laplace equation for determining two-dimensional flow of soil elements. Consider a soil element of infinitesimally small size of dx and dz in X- and Z-directions, respectively, through which the flow is taking place, shown in Fig. 10.8. Consider unit length of the soil element in the Y-direction. Let vx be the velocity [...]