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A rockfall protection embankment is an earthwork built in elevation with respect to the ground to intercept falling rock fragments before elements at risk such as roads and buildings are reached. This term is widely used in the rockfall community but the terms bunds and walls are sometimes used as alternatives.
A major landslide occurred 4 miles (6.4 km) east of Oso, Washington, United States, on March 22, 2014, at 10:37 a.m. local time.A portion of an unstable hill collapsed, sending mud and debris to the south across the North Fork of the Stillaguamish River, engulfing a rural neighborhood, and covering an area of approximately 1 square mile (2.6 km 2).
The National Disaster Risk Reduction and Management Council (NDRRMC), formerly known as the National Disaster Coordinating Council (NDCC) until August 2011, is a working group of various government, non-government, civil sector and private sector organizations of the Government of the Republic of the Philippines established on June 11, 1978 by Presidential Decree 1566. [1]
The Philippines raised the alert level at the popular Mayon volcano by a notch on Thursday, after detecting volcanic earthquakes and hundreds of rockfall events. At "alert level 3" on a scale of 5 ...
Under the Philippine Disaster Risk Reduction and Management Act of 2010 (Republic Act 10121), a "state of calamity" is defined as "a condition involving mass casualty and/or major damages to property, disruption of means of livelihoods, roads and normal way of life of people in the affected areas as a result of the occurrence of natural or human-induced hazard".
Talus cones produced by mass moving, north shore of Isfjord, Svalbard, Norway Mass wasting at Palo Duro Canyon, West Texas (2002) A rockfall in Grand Canyon National Park. Mass wasting, also known as mass movement, [1] is a general term for the movement of rock or soil down slopes under the force of gravity.
A rockfall or rock-fall [1] is a quantity 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. The term is also used for collapse of rock from roof or walls of mine or quarry workings.
Rockfall simulators determine travel paths and trajectories of unstable blocks separated from a rock slope face. [36] Analytical solution method described by Hungr & Evans [37] assumes rock block as a point with mass and velocity moving on a ballistic trajectory with regard to potential contact with slope surface. Calculation requires two ...