lithostatic pressure

(redirected from Overburden pressure)
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lithostatic pressure

[¦lith·ə¦stad·ik ′presh·ər]
(geophysics)
References in periodicals archive ?
Following data preparation and compaction trend analysis, the Geolog pore pressure prediction module calculates hydrostatic pressure, overburden pressure, pore pressure, and fracture pressure in a single multi-tab program.
The changes in porosity at different locations of same formation were interpreted to be due to overburden pressure, facies changes, diagenesis and pressure dissolution.
Standard penetration test procedures and the effects in sands of overburden pressure, relative density, particle size, aging and over consolidation", Geotechnique, vol.
Measurement of the water retention curve is complicated due to the lack of applied overburden pressure on samples from the subsoil during the analysis (Tariq and Durnford 1997).
Chan 1982; Daniells 1989), but more probably highlights the dual effects of overburden pressure and large ESP on the hydraulic conductivity of Vertosols.
Measuring the hydraulic properties of these soils is difficult; they typically shrink and swell, which means that the bulk density is a function of the water content (Berndt and Coughlan 1976), and their plastic nature leads to overburden pressures on the subsoil by the weight of overlying layers (Smiles 2000).
Additional features such as support height specification, overburden pressure and eccentricity of column for isolated footings
p, can be equated to the slope of the line of matric potential versus overburden pressure at a given gravimetric water content (or moisture ratio), viz.
If we were to consider swelling soils only when they are free of an overburden pressure, the procedures described above would be applicable even though the weighting functions might be quite different from those applicable to rigid soils.
At equal moisture ratio, O, the overburden pressure, P, causes the void ratio, e, to decline, and therefore the `air ratio' (volume air per unit volume solid) to decline.
Overburden pressure will cause the water level in a piezometer to rise to an elevation greater than that at which water in the soil is in equilibrium with atmospheric pressure.
Overburden pressure is a recognised phenomenon in swelling clays of this type (Jury et al.