Rockfall or rock-fall 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-vertical cliff, proceeds down slope by bouncing and flying along ballistic trajectories or by rolling on talus or debris slopes,” (Varnes, 1978).

PropertyValue
dbpedia-owl:abstract
  • Unter Steinschlag versteht man meist den Niedergang von Steinen als Geröll oder Schutt an einem Hang. Steinschlag kann unterschiedliche Ursachen haben: Erosion und Verwitterung Regenwasser oder Schmelzwasser kann Gestein bewegen Durch Tiere, unachtsame Wanderer oder Kletterer können Steine losgetreten werden Wenn größere zusammenhängende Felspartien abbrechen, spricht man nicht mehr von Steinschlag, sondern von einem Felssturz. Einen umfangreicheren, meist rutschenden und eher lawinenähnlichen Abgang von Fels und Erdmassen bezeichnet man hingegen als Erdrutsch oder Bergrutsch.
  • Rockfall or rock-fall 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-vertical cliff, proceeds down slope by bouncing and flying along ballistic trajectories or by rolling on talus or debris slopes,” (Varnes, 1978). 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". Unfavourable geology and climate are the principal causal mechanisms of rockfall, factors that include intact condition of the rock mass, discontinuities within the rockmass, weathering susceptibility, ground and surface water, freeze-thaw, root-wedging, and external stresses. 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. Typically, rockfall events are mitigated in one of two ways: either by passive mitigation or active mitigation. Passive mitigation is where only the effects of the rockfall event are mitigated and are generally employed in the deposition or run-out zones, such as through the use of drape nets, rockfall catchment fences, diversion dams, etc. The rockfall still takes place but an attempt is made to control the outcome. In contrast, active mitigation is carried out in the initiation zone and prevents the rockfall event from ever occurring. Some examples of these measures are rock bolting, slope retention systems, shotcrete, etc. Other active measures might be by changing the geographic or climatic characteristics in the initiation zone, e.g. altering slope geometry, dewatering the slope, revegetation, etc. The mode of failure differs from that of a rockslide. Design guides of passive measures have been proposed by Ritchie (1963), Pierson et al. (2001) and Pantelidis (2010).
  • Los desprendimientos o desplomes son un tipo de movimientos de inestabilidad producidos por falta de apoyo, englobando a una escasa cantidad de terreno. Suele tratarse de rocas que caen por una ladera, debido a la pérdida del apoyo que las sustentaba. Entre los desprendimientos o desplomes, se puede incluir el caso del desplome de una columna rocosa en un acantilado, debido a la erosión en la base del mismo.
  • がけ崩れ(がけくずれ)とは、斜面上の土砂や岩塊が安定性を失って崩落する現象。土砂災害であり斜面崩壊の一種。一般的に、明瞭なすべり面を持つ崩壊(地すべり)や人工的に造成された斜面で発生するがけ崩れは対象外として扱われる。
dbpedia-owl:thumbnail
dcterms:subject
rdf:type
rdfs:comment
  • Los desprendimientos o desplomes son un tipo de movimientos de inestabilidad producidos por falta de apoyo, englobando a una escasa cantidad de terreno. Suele tratarse de rocas que caen por una ladera, debido a la pérdida del apoyo que las sustentaba. Entre los desprendimientos o desplomes, se puede incluir el caso del desplome de una columna rocosa en un acantilado, debido a la erosión en la base del mismo.
  • がけ崩れ(がけくずれ)とは、斜面上の土砂や岩塊が安定性を失って崩落する現象。土砂災害であり斜面崩壊の一種。一般的に、明瞭なすべり面を持つ崩壊(地すべり)や人工的に造成された斜面で発生するがけ崩れは対象外として扱われる。
  • Unter Steinschlag versteht man meist den Niedergang von Steinen als Geröll oder Schutt an einem Hang. Steinschlag kann unterschiedliche Ursachen haben: Erosion und Verwitterung Regenwasser oder Schmelzwasser kann Gestein bewegen Durch Tiere, unachtsame Wanderer oder Kletterer können Steine losgetreten werden Wenn größere zusammenhängende Felspartien abbrechen, spricht man nicht mehr von Steinschlag, sondern von einem Felssturz.
  • Rockfall or rock-fall 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-vertical cliff, proceeds down slope by bouncing and flying along ballistic trajectories or by rolling on talus or debris slopes,” (Varnes, 1978).
rdfs:label
  • Rockfall
  • Steinschlag
  • Desprendimiento
  • がけ崩れ
owl:sameAs
foaf:depiction
foaf:page
is dbpedia-owl:wikiPageRedirects of
is owl:sameAs of
is foaf:primaryTopic of