Processes (03 25xxx)

displacement of soil (01) at the base of an excavation (01) or adjacent to the toe of an embankment (01) caused by pressure of water

removal of soil (01) particles caused by liquid flow (BS EN ISO 772) through a soil (01)

internal erosion (03 25002) leading to sudden collapse

cf. piping (03 45001)

disturbance of a soil (01) structure by the action (01) of ground (01) ice

failure (11 17012) of exposed cohesive soil (04 23005) by fracturing

upward displacement of the ground (01) as a result of excavation (01), surcharge (03 27031) or installing displacement piles (BS EN 12699)

downward movement of the ground (01) surface that results from collapse, removal or displacement of underlying material (01)

downwarping of a hard rock (03 23027) stratum (03 23001) in an escarpment valley side or excavation (01) due to extrusion of a soft underlying stratum (03 23001)

landslip

movement of a mass of soil (01) or rock (03 23027) by gravity

rotation of a mass of soil (01) along a curved slip surface (03 27025)

rotational slide (03 25010) on a slip surface (03 27025) that is approximately circular

rotational slide (03 25010) on a slip surface (03 27025) that is not wholly circular

movement of a shallow mass of soil (01) in a plane roughly parallel to the slope (01) due to a weakness on the plane

mud flow

translational slide (03 25013) in saturated soil (03 23021), caused by a sudden increase in pore water pressure (03 27011), in which the soil (01) flows as a viscous fluid

translational slide (03 25013) in which the sliding mass remains more or less intact

translational slide (03 25013) in which a block of relatively strong rock (03 23027) or stiff to hard clay (BS EN 12670) moves down a slope (01) as a unit

translational slide (03 25013) of debris, forming a mantle on a slope (01) or the disturbed material at the toe of a rotational slide (03 25010), when rainfall (05 29004) or diverted surface water (01) causes downward movement of the debris

movement of a soil (01) mass that combines the characteristics (01) of a rotational slide (03 25010) and a translational slide (03 25013)

large scale slip (03 25009) or flow slide (03 25014)

reduction of bulk volume of soil (01), usually over a period of time, that results from the closer packing of particles caused by an increase in effective stress (03 27014)

complete or partial failure (11 17012) of an explosion, after action to initiate it