pore pressure


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pore pressure

[′pȯr ‚presh·ər]
(hydrology)
References in periodicals archive ?
Pore pressure alters the effective stress acting on the rock, which influences rock fracture (Hassanzadegan et al.
Addax Petroleum, an international oil and gas exploration and production company, has acquired Paradigm Pore Pressure Prediction module to complement its Paradigm range of products.
Then elastic-plastic numerical analysis program was developed considering the effect of water pore pressure in tunnels and other underground engineering structures.
Except velocity along the embankment and drainage which have certain values, other parameters that have significant impact on the rate of pore pressure and the changes include core permeability and Young's modulus of material and partly shell materials, respectively.
As well, the pore pressure of unsaturated soil on the failure surface is negative, and the calculation of the shear strength is shown in Eqn 7.
where a and [sigma]' are total and effective stresses in the soil respectively and u is the pore pressure in the liquefied soil element.
Formation pressure matrix includes pore pressure matrix, collapse pressure matrix and fracture pressure matrix.
The initial displacements, pore pressure, velocity and acceleration in seabed foundation are all assumed as zero in these investigations.
By contrast, sand samples having an initial state below or to the left of the CSL will have a dilatant behaviour according to critical soil mechanics, and will not develop large positive excess pore pressure which would make them less susceptible to cyclic liquefaction.
Moreover, its highest reservoir pore pressure was very close to the fracture gradients of the formation.