1. What is the Constant Depending Upon Soil at Base of Well?

The constant depending upon soil at the base of the well (K) is a parameter that characterizes the permeability and flow characteristics of the soil beneath a well. It is used to relate the discharge rate from the well to the depression head.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( K \) — Constant depending on the soil at the base of the well
• \( Q \) — Discharge rate (m³/s)
• \( H \) — Constant depression head in the well (m)

Explanation: This formula establishes a direct proportionality between the discharge rate and the depression head, with the soil constant K serving as the proportionality factor.

3. Importance of Soil Constant Calculation

Details: Accurate determination of the soil constant is crucial for well design, groundwater flow analysis, and predicting well performance under different operating conditions.

4. Using the Calculator

Tips: Enter discharge in cubic meters per second (m³/s) and constant depression head in meters (m). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What factors influence the soil constant K?
A: The soil constant depends on soil permeability, porosity, grain size distribution, and the degree of saturation of the soil beneath the well.

Q2: How is discharge typically measured in well systems?
A: Discharge is typically measured using flow meters, weirs, or by measuring the time required to fill a container of known volume.

Q3: What is constant depression head?
A: Constant depression head refers to the steady-state drawdown or lowering of the water level in the well that remains constant during pumping.

Q4: Are there limitations to this formula?
A: This formula assumes linear relationship between discharge and head, which may not hold for all soil types or under extreme flow conditions.

Q5: How does soil type affect the constant value?
A: Coarse-grained soils like gravel and sand typically have higher K values due to higher permeability, while fine-grained soils like clay have lower K values.