phreatic surface


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Related to phreatic surface: Phreatic zone

phreatic surface

[frē′ad·ik ′sər·fəs]
(building construction)
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The hydraulic gradient of the seepage can be approximately estimated by examining the hydraulic head difference between point F and point E on the phreatic surface
where [V.sub.d] is the volume of the section ABCD below the phreatic surface of slice i in Figure 4.
GPR has been used previously in fluvial environments to map the depth to bedrock and position of the phreatic surface. A limited number of studies (Davis and Annan 1989; Fisher et al.
Looking in turn at fundamentals of slope stability and methods of stability analysis, he covers mechanics of slides, shear strength phreatic surfaces, remedial measures for correcting slides, simplified methods for plane surface failure surfaces, stability charts and other solutions, method of slices, methods for three-dimensional analysis, and reliability.