WATER MOVEMENT IN SOILS UNDER PRESSURE POTENTIALS

THE HISTORIC DEVELOPMENT IS PRESENTED OF WATER MOVEMENT IN SOILS UNDER PRESSURE POTENTIALS. DARCY'S LAW IS PRESENTED AND SOLUTIONS SOUGHT FOR THE FOLLOWING CONDITIONS: (1) STEADY STATE FLOW WITH GEOMETRICALLY PRESCRIBED BOUNDARY CONDITIONS, (2) STEADY STATE FLOW WITH A FREE BOUNDARY (FREE SURFACE GRAVITY FLOW), AND (3) UNSTEADY STATE FLOW. THE FOLLOWING METHODS OF SOLUTION ARE REVIEWED FOR STEADY STATE FLOW WITH GEOMETRICALLY PRESCRIBED BOUNDARY CONDITIONS: (1) ANALYTICAL SOLUTIONS, (2) ANALOG SOLUTIONS, (3) GRAPHICAL SOLUTION, AND (4) MECHANICAL MODELS. THE SOLUTION FOR UNSTEADY STATE FLOW USES THE ASSUMPTIONS OF FLUID, SOIL COMPRESSIBILITY, AND FOLLOWS HOOK'S LAW TO DEVELOP LINEARIZED EQUATION. MATHEMATICAL TREATMENTS ARE DESCRIBED OF ANISOTROPY AND PERMEABILITY. IT IS STATED THAT THERE IS SO MUCH TO BE LEARNED REGARDING THE FACTORS WHICH INFLUENCE THE PERMABILITY OF SOILS FOR WATER TRANSPORT UNDER PRESSURE POTENTIALS.

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Filing Info

  • Accession Number: 00235715
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 17 1970 12:00AM