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Publications tagged with [trajectory]

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Rockyfor3D is a simulation model that calculates trajectories of single, individually falling rocks, in three dimensions (3D). The model combines physically-based, deterministic algorithms with stochastic approaches, which makes Rockyfor3D a so-called ‘probabilistic ...
Filed under: Rock Mechanics -  Rock Falls
Reference: Dorren L.K.A., 2015. Rockyfor3D (v5.2) revealed –Transparent description of the complete 3D rockfall model. ecorisQ paper (www.ecorisq.org): 32p., date 25.01.2015
We analyzed a combination of airborne and terrestrial LiDAR, high-resolution photography, seismic, and acoustic data in order to gain insights into the initiation, dynamics, and talus deposition of a complex rock fall. A large (46 700 m<sup>3</sup>) rock fall ...
Filed under: Rock Mechanics -  Rock Falls
Reference: EARTH SURFACE PROCESSES AND LANDFORMS Earth Surf. Process. Landforms 37, 680–691 (2012)
<p>The impact force of a rockfall is mainly determined by its moving behavior and velocity, which are contingent on the rock shape, slope gradient, height, and surface roughness of the moving path. It is essential to precisely calculate the moving path of ...
Filed under: Rock Mechanics -  Rock Falls
Reference: World Academy of Science, Engineering and Technology 61 2012
Structures designed to protect the areas around a slope from falling rocks include mesh or cable nets, barriers and fences, and catchment areas (ditches at the toe of a slope, designed to prevent rockfall from reaching the highway). These devices allow ...
Filed under: Rock Mechanics -  Rock Falls
Reference: Publication No. FHWA-CFL/TD-11-002 January 2011
Rockfall is a rapid and rather spontaneous natural hazard. It is a natural process that poses problems in many areas downslope from rocky outcrops throughout the world. To predict the potential rockfall threat, it is not only required to estimate the stopping ...
Filed under: Rock Mechanics -  Rock Falls
Reference: S. Lambert & F. Nicot (eds.). Rockfall engineering. ISTE Ltd. / John Wiley & Sons Inc.: pp. 143 - 173.
In this paper, a general formulation using a Taylor series expansion is proposed for the quantification of the relative importance of the different processes that explain the variability of the reflected velocity vector after bouncing.
Filed under: Rock Mechanics -  Rock Falls
Reference: Nat. Hazards Earth Syst. Sci., 9, 831-846, 2009
Rock fall hazard assessment and hazard mapping are essential for the risk management of vulnerable areas. This paper analyses some issues concerning fragmental rock fall hazard mapping methodologies.
Filed under: Rock Mechanics -  Rock Falls
Reference: Nat. Hazards Earth Syst. Sci., 9, 1095–1109, 2009
This paper presents results of an iterative sequence of tests and improvements of a coupled rockfall and forest dynamics model with focus on the rockfall module.
Filed under: Rock Mechanics -  Rock Falls
Reference: Nat. Hazards Earth Syst. Sci., 10, 699-711, 2010
After a summary of the main conclusions drawn from a small-scale study, the paper focuses on half-scale experiments, describing first the testing device and the data processing and analysing then the influence of several impact parameters in order to study ...
Filed under: Rock Mechanics -  Rock Falls
Reference: Nat. Hazards Earth Syst. Sci., 9, 1981-1993, 2009
Coppice forest stands can play a key protective role on active rockfall slopes in mountainous regions. This paper aims at quantifying their protection function and at explaining the role of different stand parameters in this function.
Filed under: Rock Mechanics -  Rock Falls
Reference: Forest Ecology and Management (2009)