51. Draw the phreatic surfaces and determine the flow rates with and without the drainage blanket for the damshown in Fig 24. Below the dam is a deep deposit of medium clay that is practically impervious. This deposit isnot shown in Figure P14.9. The upstream and downstream slopes are 1(V):2(H). The hydraulic conductivityof the clay is k = kx =1.2 x 10-6 cm/s.-7 m1 m30 mClayClmGravel drainage blanket30 mFig 24 - Prob 51

Phreatic line is the top most flow line also called line of seepage. Soil mass below phreatic line…

51. Draw the phreatic surfaces and determine the flow rates with and without the drainage blanket for the d shown in Fig 24. Below the dam is a deep deposit of medium clay that is practically impervious. This de not shown in Figure P14.9. The upstream and downstream slopes are 1(V):2(H). The hydraulic conduct of the clay is k= k =1.2 x 10-6 cm/s. –7 m– 1m3

51. Draw the phreatic surfaces and determine the flow rates with and without the drainage blanket for the d shown in Fig 24. Below the dam is a deep deposit of medium clay that is practically impervious. This de not shown in Figure P14.9. The upstream and downstream slopes are 1(V):2(H). The hydraulic conduct of the clay is k= k =1.2 x 10-6 cm/s. –7 m– 1m3

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

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51. Draw the phreatic surfaces and determine the flow rates with and without the drainage blanket for the dam
shown in Fig 24. Below the dam is a deep deposit of medium clay that is practically impervious. This deposit is
not shown in Figure P14.9. The upstream and downstream slopes are 1(V):2(H). The hydraulic conductivity
of the clay is k = kx =1.2 x 10-6 cm/s.
-7 m
1 m
30 m
Clay
Clm
Gravel drainage blanket
30 m
Fig 24 - Prob 51

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