Problem 1. A confined aquifer has two monitoring wells spaced 500 m apart along the direction of the groundwaterflow. The difference in the water level in the wells is 2.0 m. The hydraulic conductivity of the sediment is 50 m/day.The retardation factor is 3.1. Calculate the Darcy velocity.2. The porosity of the sediment is 0.35. What is the actual velocity of groundwater flow?3. How long would it take for the contaminant to travel 1 mile (1607 m)?

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Answered: 1. Calculate the Darcy velocity. 2. The…

1. Calculate the Darcy velocity. 2. The porosity of the sediment is 0.35. What is the actual velocity of groundwater flow? 3. How long would it take for the contaminant to travel 1 mile (1607 m)?

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.4P

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Concept explainers

Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.

Question

Problem 1. A confined aquifer has two monitoring wells spaced 500 m apart along the direction of the groundwater
flow. The difference in the water level in the wells is 2.0 m. The hydraulic conductivity of the sediment is 50 m/day.
The retardation factor is 3.
1. Calculate the Darcy velocity.
2. The porosity of the sediment is 0.35. What is the actual velocity of groundwater flow?
3. How long would it take for the contaminant to travel 1 mile (1607 m)?

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