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Encyclopedia > Rockfall
This rockfall saved the underneath soil from further erosion, resulting in a hoodoo.
This rockfall saved the underneath soil from further erosion, resulting in a hoodoo.

Rockfall refers to quantities of rock falling freely from a cliff face. A rockfall is a fragment of rock (a block) detached by sliding, toppling, or falling, that falls along a vertical or sub-verticle cliff, proceeds down slope by bouncing and flying along ballistic trajectories or by rolling on talus or debris slopes,” (Varnes, 1978). It is commonly caused by undercutting, either from wave action or badly planned construction work cutting away too much at the slope. The pieces of rock collect at the bottom creating a talus or scree. Rocks falling from the cliff may dislodge other rocks and serve to create another mass wasting process, for example an avalanche. Image File history File links Metadata Size of this preview: 800 × 531 pixelsFull resolution (2048 × 1360 pixel, file size: 2. ... Image File history File links Metadata Size of this preview: 800 × 531 pixelsFull resolution (2048 × 1360 pixel, file size: 2. ... Hoodoos East of Drumheller, Alberta Hoodoos are tall thin spires of rock that protrude from the bottom of arid basins and badlands. ... “Precipice” redirects here. ... Scree or detritic cone is a term given to broken rock that appears at the bottom of crags, mountain cliffs or valley shoulders. ... Mass wasting, also known as mass movement or slope movement, is the geomorphic process by which soil, regolith, and rock move downslope under the force of gravity. ... A Himalayan avalanche near Mount Everest. ...


AIS Construction Company is the leader in Rockfall mitigation.


  Results from FactBites:
 
Erosion Control | Rockfall Protection: Challenges in Design and Installation (4164 words)
Rockfall mesh is double twisted (one twist more than its chainlink cousin), which prevents stretching and, when properly installed, allows rock under the mesh to move farther down a slope.
Rockfall mesh and cable netting can be anchored at the bottom or - when the plan is to leave room for debris to flow beneath the mesh - left open so the debris can be caught in a catch fence or a retaining wall at the toe of the slope.
Rockfalls in the quarry caused residents, whose homes were located approximately 2,625 ft. from the mining operations, to be concerned.
News Release - Yosemite National Park (309 words)
A rockfall on August 11, 1999 dropped approximately 100 tons of rock and closed the trail for two weeks.
A smaller, 15 -ton rockfall on September 25, 2001 temporarily closed the trail for minor repairs and a safety assessment.
Rockfall is a natural process in Yosemite National Park and when and where it occurs cannot be predicted.
  More results at FactBites »


 

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