The wells shown below are in a leaky confined aquifer. The aquifer has a hydraulic conductivity of 30 ft/d, saturated thickness of 45.0 ft, and storage coefficient of 0.00080. The aquitard above has a thickness of 8.0 ft and vertical conductivity of 0.45 ft/d. Well A was turned on at noon Sunday with a flow rate of 150 gpm. Well B was turned on at noon Tuesday with a flow rate of 200 gpm. Find the total drawdown in ft at the observation well C at noon Thursday. 150 ft 350 ft B 150 ft

The wells shown below are in a leaky confined aquifer. The aquifer has a hydraulic conductivity of 30 ft/d, saturated thickness of 45.0 ft, and storage coefficient of 0.00080. The aquitard above has a thickness of 8.0 ft and vertical conductivity of 0.45 ft/d. Well A was turned on at noon Sunday with a flow rate of 150 gpm. Well B was turned on at noon Tuesday with a flow rate of 200 gpm. Find the total drawdown in ft at the observation well C at noon Thursday. 150 ft 350 ft B 150 ft

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Question Two An unconfined aquifer with a well pumping 0.4m3/s and saturated thickness is 24m.lf the drawdown 50m from the well is 1m and the drawdown 100m from the well is 0.5m, calculate the hydraulic conductivity and transmissivity of the aquifer.The solution should include a labeled diagram.
A fully penetrating 12-in diameter well has its bottom 80 ft below the static water table. After 24 hr of pumping at 1100 gpm, the water level in the test well stabilizes to 10 ft below the static water table. A drawdown of 3.65 ft is noticed in an observation well 320 ft away from the test well. Determine the hydraulic conductivity of the aquifer.
A 12 inch diameter well was installed in an unconfined aquifer consisting of a 60 foot thick layer of sand. The water table was 15 feet below the ground surface before pumping of the well began. The well was then pumped at a rate of 30 gallons per minute and the water level in the well dropped to 45 feet below the ground surface after a steady-state condition was reached. The radius of well influence is 4000 feet. a) Calculate the permeability of the sand b) Compute and plot the drawdown surface
The following criteria are needed to reach the "steady state" EXCEPT.. i. The water level in the test well is constant. ii. The water level in the observation wells is constant iii. Pumping in results to a drawdown curve. iv. The water level in all wells is of the same height
Q2) A fully penetrating well of diameter 0.3 m is located in an uncontined aquifer of saturated depth 45 m. If the drawdown in the well is 15 m for the discharge of 1200 m³/day and the radius of influence is 300 m, compute hydraulic conductivity?
1. A 10-in. diameter well is drilled to the bottom of an unconfined aquifer. The water table is originally 500 ft above the bottom of the aquifer whose hydraulic conductivity is known to be 0.25 ft / day. If 100 gal / min is pumped from the well, what will be the equilibrium depth of the water in the well if the radius of influence is 1000 ft? How much drawdown should be expected at a distance of 250 ft from the well.
A stratified aquifer consists of 2 ft of 200-md sand, 3 ft of 100-md sand, and 5 ft of 10-md sand. What is the steady- state water injection rate into this 8-in. diameter well when the well pressure is 600 psia and the reservoir pressure at a distance of 100 ft is 500 psia? Assume water viscosity of 1 cp and water formation volume factor of 1 res bbl/STB.
3. A well with diameter of 42cm fully penetrates 32m below the static water table. After 24 hours of pumping at a rate of 6m³/min, the water level in pumped well is dropped by 12.5m. If the distance from the center of the main well to the point in the aquifer where the draw down becomes zero is 250m: Determine A. Specific capacity of the well B. Transmissibility C. Find the discharge of the main well if it penetrates the well partially (16m below the water table). D. The percentage increase/decrease in the yield of the well because of partial penetration
Given the required grout hydraulic head is 10 m, the head of the grout pipe is 1.5m above the ground. The injection point is at a depth of 4 m. The groundwater is 2m above the injection point. Calculate the required grout pressure.
A 30 cm diameter well completely 15 points penetrates a confined aquifer of permeability of 45 m/day. The thickness of the aquifer is 20 m. Under steady state of pumping the drawdown at the well found to be 3.0 m and the radius of influence was 300 m. Calculate the discharge of the well * Pumping well dia = 2r + Original piezometric surface Piezometric surface under pumping Aquiclude Flow Confined aquifer Aquiclude Well Operating in a Confined Aquifer 1.548 m^3/min 0.0258 m^3/min 0.258 m^3/min 0.0851 m^3/min
A single ideal pumping well, with radius of 1.0 ft and flow rate of 155 gpm, exists in an ideal confined aquifer. The aquifer has a saturated thickness of 82 ft. The pump continues running until equilibrium conditions are reached. The drawdown at the pumping well is 42 ft, and the drawdown at an observation well 138 ft away is 7.5 ft. Determine: Find the transmissivity in ft^2/day and hydraulic conductivity in ft^2/day Find the radius of influence in feet.
14. Yuri wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in diameter with two observation wells. A pumping test was conducted for 24 hours with the discharge being held constant at 5618.7 m^3/day. The first one, 88.43 meters from the test well, has a draw-down of 0.52 meters. The second one, 48 meters from the test well, has a draw-down of 1.48 meters.The static water table penetrates the well to a depth of 27 meters. Determine the radius of influence of the aquifer in meters. Round off to three decimal places.