Topic
Pore water pressure
About: Pore water pressure is a research topic. Over the lifetime, 11455 publications have been published within this topic receiving 247670 citations. The topic is also known as: pwp.
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TL;DR: In this paper, the authors used electrical resistivity tomography and in situ sampling to delineate the Saint-Ferreol paleo-channel of the Rhone River located in Camargue, in the South East of France.
Abstract: [1] The flow of ground water in a buried permeable paleo-channel can be observed at the ground surface through its self-potential signature. We apply this method to delineate the Saint-Ferreol paleo-channel of the Rhone River located in Camargue, in the South East of France. Negative potentials, ∼−30 mV (reference taken outside the paleo-channel), are associated with ground water flow in this major sand-filled channel (500 m wide). Electrical resistivity is primarily controls by the salinity of the pore water. Electrical resistivity tomography and in situ sampling show the salinity of the water inside the paleo-channel is ten times smaller by comparison with the pore water of the surrounding sediments. Combining electrical resistivity surveys, self-potential data, and a minimum of drilling information, a 3-D reconstruction of the architecture of the paleo-channel is obtained showing the usefulness of this methodology for geomorphological reconstructions in this type of coastal environment.
66 citations
TL;DR: Based on Hoek-Brown failure criterion and using the upper bound theorem of limit analysis, a numerical solution for the shape of collapsing block in circular tunnel subjected to pore pressure is derived as discussed by the authors.
65 citations
TL;DR: In this paper, a numerical model is presented for the transport and exchange of oxygen isotopes in an idealized two-layer oceanic crust (basalt-carbonate) that is saturated with a non-advecting pore fluid open to the overlying ocean.
65 citations
Journal Article•
TL;DR: In this paper, the effect of aggregate gradation on the cyclic stress-strain behavior, pore pressure, damping, resilient modulus, compressibility, and permeability of typical granular materials with different gradation was investigated under saturated, undrained, repeated triaxial loading conditions.
Abstract: The behavior of typical granular materials with different gradation was investigated under saturated, undrained, repeated triaxial loading conditions. Of particular interest is the comparative behavior of open-graded and dense-graded base courses and the influence of fines content on the dynamic response. The effect of aggregate gradation on the cyclic stress-strain behavior, pore pressure, damping, resilient modulus, compressibility, and permeability is investigated. Results indicate that saturated granular materials will develop excess pore water pressure under undrained repeated triaxial loading. This could lead to a decrease in resilient modulus and a potential increase in volume compressibility. Open-graded aggregates are more resistant to pore pressure buildup than dense-graded aggregates and are therefore less likely to induce damage in pavements under saturated conditions. In this respect, the estimated damage per repetition could be as much as 70 to 100 times more for pavements with dense-graded bases.
65 citations
15 Dec 1990
65 citations