Question
Asked Oct 23, 2019
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for the hydraulic structure shown in figure 8.19 draw a flow net through the permeable layer and calculate the seepage loss in m3/day/m

 

25 m
10 m
3.34 m
1.67 m
k 0.002 cm/sec
20 m
1.67 m
1.67 m
Impermeable layer
Permeable layer
Figure 8.19
Cengage Learning 2014
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25 m 10 m 3.34 m 1.67 m k 0.002 cm/sec 20 m 1.67 m 1.67 m Impermeable layer Permeable layer Figure 8.19 Cengage Learning 2014

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Expert Answer

Step 1

To find: Draw a flow net through the permeable layer and calculate the seepage loss in m3/day/m.

 

We have been provided with the hydraulic structure shown in figure as follows:

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25 m 10m 334 m 1.67 m k 0.002 cm/sec 20 m 1.67 m 1.67 m Impermeable layer Permeable layer

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Step 2

Part A. Following is the flow net through the permeable layer.

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25 m Permeable layer Impermeable layer

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Step 3

Part B :

For calculation of the seepage loss in m3/day/m is as follows...

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q = kH Where, q is the seepage loss k is the hydraulic conductivity, H is the total head N, is the number of flow channels in the flow net, N is the number of the potential drops

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