pore water pressure

Later sections of this article address the pore water pressures for seepage and consolidation problems.

The concept of effective stress truly becomes interesting when dealing with non-hydrostatic pore water pressure.

Principally this is because the rainfall drives an increase in pore water pressures within the soil.

Earthquakes provide significant environmental stresses and can promote elevated pore water pressure which leads to failure.

When pore water pressures are sufficient to reduce effective normal stress to a critical level, failure occurs.

Groundwater seepage and elevated pore water pressure can cause submarine landslides.

The Pore water pressure is essential in differentiating a soil's total stress from its effective stress.

Pore water pressure data aids determining stratigraphy and is primarily used to correct tip friction values for those effects.

Alternatively, shear strength may be decreased by weathering, changes in pore water pressure, and organic material.

Pore water pressures under unsaturated conditions (vadose zone) are measured in with tensiometers.

A soil could be considered underconsolidated immediately after a new load is applied but before the excess pore water pressure has had time to dissipate.

The vertical pore water pressure distribution in aquifers can generally be assumed to be close to hydrostatic.

This parameter is called the effective stress of the soil, basically equal to the difference in a soil's total stress and pore water pressure.

(Full dissipation of excess pore water pressure.

If there is too much water you would have too much pore water pressure during compression to compact any further.

Pore water pressure refers to the pressure of groundwater held within a soil or rock, in gaps between particles (pores).

Pore water pressures in below the phreatic level (see also groundwater) are measured in piezometers.

Amongst other academic writings, he formulated concepts such as that of A and B pore water pressure coefficient which is still widely used today.

As pore water pressure rises a progressive loss of strength of the soil occurs as effective stress is reduced.

Landslides occur during earthquakes as a result of two separate but interconnected processes: seismic shaking and pore water pressure generation.

If there is no pore water flow occurring in the soil, the pore water pressures will be hydrostatic.

The last factor affecting the development of pore water pressure is the absorption pressure of water and surrounding soil particles.

Realistically, the effective stress is greater than the total stress, as the pore water pressure in these partially saturated soils is actually negative.

Pore water pressure is the pressure of water that is trapped within the particles of rocks and soils.

In areas of high pore water pressure sand and salt water can form quicksand, which is a colloid hydrogel that behaves like a liquid.