Term
|
Definition
| (head loss) del_h/L (length of flow over the loss of head occurred) |
|
|
Term
|
Definition
quantity of water flowing in unit time through a unit gross cross sectional area of soil at right angles to the direction of flow
v = ki |
|
|
Term
| Hydraulic Conductivity (k) |
|
Definition
coefficient of permeability (cm/sec)
depends on fluid viscosity, pore-size distribution, void ratio, roughness of mineral particles, and degree of soil saturation |
|
|
Term
|
Definition
lab test for determination of hydraulic conductivity
set up so the difference of head between the inlet and the outlet remains constant during the test period
k = QL/Aht
A is the area of the cross section
t is the duration of water collection
Q is the total volume of water collected |
|
|
Term
|
Definition
head keeps decreasing, water is allowed to flow through the soil specimen such that the final head difference at times t = t2 is h2
k = 2.303(aL/At)log10(h1/h2)
a cross sectional area of the standpipe |
|
|
Term
| Equivalent k (Horizontal) |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
iostropic medium representing two orthogonal families of curves: flow lines and equipotential lines
1. upstream and downstream surfaces of the permeable layer are equipotential lines
2. Flow lines intersect equipotential lines at right angles |
|
|
Term
|
Definition
| line along which a water particle will travel from the upstream to the downstream side in the permeable soil medium |
|
|
Term
|
Definition
| line along which the potential head at all points is equal |
|
|
Term
|
Definition
|
|
