A dam shown in Figure 1 retains 10 m of water. A sheet pile wall (cutoff curtain) on the upstream side, which is used to reduce seepage under the dam, penetrates 7 m into a 20.3 m-thick silty sand stratum. Below the silty sand, there is a thick deposit of practically impervious clay. The average hydraulic conductivity of the silty sand is 2x10 cm/s. Assume that the silty sand is homogeneous and isotropic. a) Draw the flow net under the dam. b) Calculate the flow rate, q. c) Determine the hydraulic gradient at exit path ED. 10 m A 20.3 m 2.4 mt C 7m 30.6 m- -Sheet pile wall Clay (impervious) Figure No. 1 E k = 2 x 104 cm/s H
A dam shown in Figure 1 retains 10 m of water. A sheet pile wall (cutoff curtain) on the upstream side, which is used to reduce seepage under the dam, penetrates 7 m into a 20.3 m-thick silty sand stratum. Below the silty sand, there is a thick deposit of practically impervious clay. The average hydraulic conductivity of the silty sand is 2x10 cm/s. Assume that the silty sand is homogeneous and isotropic. a) Draw the flow net under the dam. b) Calculate the flow rate, q. c) Determine the hydraulic gradient at exit path ED. 10 m A 20.3 m 2.4 mt C 7m 30.6 m- -Sheet pile wall Clay (impervious) Figure No. 1 E k = 2 x 104 cm/s H
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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