A dam, shown retains 10 m of water. A sheet pile wall (cutoff curtain) on the...
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A dam, shown retains 10 m of water. A sheet pile wall (cutoff curtain) on the upstream side, which is used to reduce seepage under a concrete dam, penetrates 7 m into a 20.3 m thick silty sand stratum. Below the silty sand is a thick deposit of practically impervious clay. The average hydraulic conductivity of the silty sand is 2.0 x 104 cm/s. Assume that the silty sand is homogeneous and isotropic. G₁ = 2.7 (a) How do you propose to estimate the seepage loss through the silty sand layer? Determine the flowrate. (b) Calculate and draw the porewater pressure distribution along the base of the dam. (c) Determine the uplift force. (d) Determine the maximum hydraulic gradient. (e) Will piping occur if the void ratio of the silty sand is 0.8? (f) What is the effect of reducing the depth of penetration of the sheet pile wall? 10 m A 4. 20.3 m G B 2.4 m C 11. 30.6 m -Sheet pile wall ..k= 2 x 10 cm/s A dam, shown retains 10 m of water. A sheet pile wall (cutoff curtain) on the upstream side, which is used to reduce seepage under a concrete dam, penetrates 7 m into a 20.3 m thick silty sand stratum. Below the silty sand is a thick deposit of practically impervious clay. The average hydraulic conductivity of the silty sand is 2.0 x 104 cm/s. Assume that the silty sand is homogeneous and isotropic. G₁ = 2.7 (a) How do you propose to estimate the seepage loss through the silty sand layer? Determine the flowrate. (b) Calculate and draw the porewater pressure distribution along the base of the dam. (c) Determine the uplift force. (d) Determine the maximum hydraulic gradient. (e) Will piping occur if the void ratio of the silty sand is 0.8? (f) What is the effect of reducing the depth of penetration of the sheet pile wall? 10 m A 4. 20.3 m G B 2.4 m C 11. 30.6 m -Sheet pile wall ..k= 2 x 10 cm/s
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Answer rating: 100% (QA)
a To estimate the seepage loss through the silty sand layer we can use Darcys law which states that the flow rate Q is equal to the product of the cro... View the full answer
Related Book For
Intermediate Accounting
ISBN: 978-0324592375
17th Edition
Authors: James D. Stice, Earl K. Stice, Fred Skousen
Posted Date:
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