7.22 Refer to Figure 7.24. The following data were collected during the field per- meability measurement of a confined aquifer using a pumping test. Determine the hydraulic conductivity of the permeable layer. Use Eq. (7.49). Thickness of the aquifer, H = 4.5 m Piezometric level and radial distance of the first observation well: h₁ = 2.9 m; r₁ = 17.8 m Piezometric level and radial distance of the second observation well: h₂ = 1.8 m; r₂ = 8.1 m Rate of discharge from pumping, q = 0.5 m³/min q logo k (7.49) 2.727H(h, h₂) dr Piezometric level during pumping Impermeable layer Confined aquifer Test well Observation wells Figure 7.24 Pumping test from a well penetrating the full depth in a confined aquifer Piezometric level before pumping h dh THA
7.22 Refer to Figure 7.24. The following data were collected during the field per- meability measurement of a confined aquifer using a pumping test. Determine the hydraulic conductivity of the permeable layer. Use Eq. (7.49). Thickness of the aquifer, H = 4.5 m Piezometric level and radial distance of the first observation well: h₁ = 2.9 m; r₁ = 17.8 m Piezometric level and radial distance of the second observation well: h₂ = 1.8 m; r₂ = 8.1 m Rate of discharge from pumping, q = 0.5 m³/min q logo k (7.49) 2.727H(h, h₂) dr Piezometric level during pumping Impermeable layer Confined aquifer Test well Observation wells Figure 7.24 Pumping test from a well penetrating the full depth in a confined aquifer Piezometric level before pumping h dh THA
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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7.22
Transcribed Image Text:7.22 Refer to Figure 7.24. The following data were collected during the field per-
meability measurement of a confined aquifer using a pumping test. Determine
the hydraulic conductivity of the permeable layer. Use Eq. (7.49).
Thickness of the aquifer, H = 4.5 m
Piezometric level and radial distance of the first observation well:
h₁ = 2.9 m;r,= 17.8 m
Piezometric level and radial distance of the second observation well:
h₂ = 1.8 m; r₂ = 8.1 m
Rate of discharge from pumping, q = 0.5 m³/min
q logo
k
(7.49)
2.727H(h, - h₂)
Piezometric level
during pumping
h₂
Impermeable layer
Confined aquifer
Test well
Observation wells
Figure 7.24 Pumping test from a well penetrating the full depth in a confined aquifer
Piezometric level
before pumping
4
h dh
✓
TEA
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