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The Coefficient of Permeability of soil describes how easily a liquid will move through the soil. It is a critical parameter in hydrogeology and civil engineering for understanding groundwater flow and designing drainage systems.
The calculator uses the formula:
Where:
Explanation: This formula calculates the permeability coefficient based on natural recharge, water table depth, drain spacing, and flow characteristics in a one-dimensional Dupit flow system with recharge.
Details: Accurate permeability estimation is crucial for designing effective drainage systems, predicting groundwater movement, and managing water resources in agricultural and construction applications.
Tips: Enter natural recharge in m³/s, water table profile in meters, length between tile drains in meters, and flow in x-direction in m³/s. All values must be positive numbers.
Q1: What is natural recharge?
A: Natural Recharge is a process by which groundwater is replenished naturally when precipitation infiltrates the ground, moving through the soil and rock layers until it reaches the water table.
Q2: What does the water table profile represent?
A: The Water Table Profile refers to the depth of water table below aquifer and is a key parameter in groundwater flow calculations.
Q3: How is length between tile drains determined?
A: The Length between Tile Drain refers to the approximate expression to the water table profile on a horizontal impervious boundary, typically determined based on soil characteristics and drainage requirements.
Q4: What is flow in 'x' direction?
A: The Flow in 'x' Direction refers to the one-dimensional Dupit flow with recharge representation, describing groundwater movement in a specific direction.
Q5: What are typical permeability values for different soils?
A: Permeability varies greatly by soil type: gravel (10⁻¹-10² cm/s), sand (10⁻³-10⁻¹ cm/s), silt (10⁻⁵-10⁻³ cm/s), clay (10⁻⁹-10⁻⁵ cm/s).