rockfall - definition. What is rockfall
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%ما هو (من)٪ 1 - تعريف

ROCKS FALLEN FREELY FROM A CLIFF, ROOF, OR QUARRY
Rock-fall; Rock fall
  • Rockfall deposit, Afghanistan
  • [[Yosemite Valley]] rockfall map, indicating the type of rockfall as well as location and known date of each one in Yosemite Valley. Rockfalls tend to be common in spring and winter.
  • Rockfall in Utah, USA
  • Steel nets installed for rockfall protection on [[Sion Panvel Highway]] in [[India]].

rockfall         
¦ noun a descent of loose rocks.
?a mass of fallen rock.
Rockfall         
A rockfall or rock-fallWhittow, John (1984). Dictionary of Physical Geography. London: Penguin, 1984. . is a quantity/sheets of rock that has fallen freely from a cliff face. The term is also used for collapse of rock from roof or walls of mine or quarry workings. "A rockfall is a fragment of rock (a block) detached by sliding, toppling, or falling, that falls along a vertical or sub-vertical cliff, proceeds down slope by bouncing and flying along ballistic trajectories or by rolling on talus or debris slopes."Varnes, D.J., 1978, Chapter 2, Slope Movement Types and Processes
Rockfall barrier         
  • A block arrested by a flexible rockfall barrier.
  • Brakes are critical components of flexible barriers. Illustration of the variety in technology.
  • A net with a rectangular mesh, supported by static posts, placed on top a rockfall protection embankment. (Gothard pass, Switwerland)
STRUCTURE BUILT TO INTERCEPT ROCKFALL
Draft:Rockfall barrier
A rockfall barrier is a structure built to intercept rockfall, most often made from metallic components and consisting of an interception structure hanged on post-supported cables.

ويكيبيديا

Rockfall

A rockfall or rock-fall is a quantity/sheets of rock that has fallen freely from a cliff face. The term is also used for collapse of rock from roof or walls of mine or quarry workings. "A rockfall is a fragment of rock (a block) detached by sliding, toppling, or falling, that falls along a vertical or sub-vertical cliff, proceeds down slope by bouncing and flying along ballistic trajectories or by rolling on talus or debris slopes."

Alternatively, a "rockfall is the natural downward motion of a detached block or series of blocks with a small volume involving free falling, bouncing, rolling, and sliding". The mode of failure differs from that of a rockslide.

أمثلة من مجموعة نصية لـ٪ 1
1. The latest was a magnitude 3.1 quake early Thursday that was accompanied by a rockfall.
2. With all the rockfall and rebuilding, that number is probably still good, he said.
3. No other rockfall has affected the park‘s housing so dramatically in over a century.
4. The rockfall coincided with a magnitude 3.1 earthquake shortly after ' a.m.
5. The risk of another rockfall is ever present but most people here do not have the money to leave.