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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Rockfall"”.
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Tennessee Rockfall Management System
The Rockfall Management System developed for Tennessee DOT (TennRMS)integrates a customized rockfall risk rating system, web-based GIS application, and rockfall database to provide a robust single interface for interacting with rock slope information. The system should prove to be a valuable tool …
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Rating Rockfall Hazard in Tennessee
Rockfall from rock slopes adjacent to roadways is a major hazard and poses a problem for transportation agencies across the country. The state of Tennessee has implemented the Tennessee Rockfall Management System (RMS) as a means of reducing the liabilities associated with rockfall hazard. It …
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Development of a high temporal resolution rockfall database using structure-from-motion photogrammetry and analyses of seasonal- and weather-rockfall relationships
Rockfall is the most common type of mass wasting event in mountainous regions or other areas of steep topography, and is a pervasive hazard that consistently impacts human lives and infrastructure. Understanding the relationship between rockfall and weather and seasonal patterns in rockfall …
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Innovative Approaches to the Dynamic Behavior of Rockfall Protection Embankments
L'abstract è presente nell'allegato / the abstract is in the attachment
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Advancing Rockfall Hazard Assessment through Data-Driven Modelling Based on Laboratory-Scale Experiments
Understanding the dynamics of rockfalls is critical for predicting hazards and mitigating risks in both natural and engineered environments. This research investigates the relationship between rock shape, release angle, and rockfall behavior, combining experimental analysis with machine learning …
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Mechanical characterization of flexible rockfall barriers through a global multi-component analytical framework
L'abstract è presente nell'allegato / the abstract is in the attachment
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Design Optimization of Safety Benches for Surface Quarries through Rockfall Testing and Evaluation
… Proper bench design is important for preventing rockfall related accidents and injuries without wasting the reserves held in the benches. An in depth analysis has been performed using the results from 230 rockfall tests conducted at two surface quarries. The goal of this project is to give …
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Investigating the Occurrence and Effects of Fragmentation: Analysis of Rockfall Videos Captured During Slope Maintenance Campaigns
Rockfall is a gravity-driven natural hazard common in mountainous areas, that poses a risk to infrastructure and human life. Understanding rockfall frequency and potential trajectories are essential for the safe design of roads and railways. This is traditionally through analysis of the slope and …
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Understanding the nuances of the rockfall frequency-magnitude relationship: review and examples from two original case studies in Glenwood Canyon, CO, USA
The rockfall frequency-magnitude relationship is important for understanding rockfalls as a geomorphic agent and as a key mass-wasting hazard. The relationship is frequently modeled with a power law fit to frequency vs. volume, and the power law provides a basis for extrapolating recurrence …
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An Assessment of Rockfall Triggers and Seasonal Weather Trends Through An Examination of Railway Slope Management Procedures
Rockfalls are one of the many geohazards that impact railways across Canada with the potential to cause operational delays, damage to infrastructure and the environment, and injury or loss of life. To minimize the risk associated with these scenarios, railways rely on slope management systems that …
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Rimforest Landslides, San Bernardino Mountains, Southern California
… the primary activity has been mass wasting by rockfall in highly fractured quartz monzonite. Tension cracks in the adjacent area indicate that active landsliding may be spreading. Landsliding in this area had its origin most likely with the uplift of the San Bernardino Mountains and has …
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On the ecology of Acer circinatum Pursh: a study of factors that affect the distribution of a small hardwood tree within oldgrowth forests in southwestern British Columbia, Canada
… vine maple cover was significantly connected to rockfall sediment. This was probably a relic of vine maple dominance during primary succession. On a smaller scale light availability and potentially former light availability influenced vine maple cover and occurrence. Ground water levels, soil …
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A study on slope instability above Chapman's Peak Drive, Cape Peninsula, South Africa
… their summit. A seemingly increased frequency of rockfalls and the death of a young woman in December 1999 led to the closing of the Drive as a public thoroughfare. At the beginning of the year 2000 Chapman's Peak Drive featured in both local and international media because of the wildfires that …
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Landscapes of Danger: A Geospatial Analysis of Perceived and Realistic Risk in Bryce Canyon National Park
… were built: one to identify areas susceptible to rockfall and another to identify areas susceptible to landslides/slumps. Overall, respondents reported feeling largely unconcerned when ranking their perception of various risks within the park (µ = 2.1, σ = .78), however, perception gaps and …
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The development of an interactive computer model for managing geologic hazard databases
… in southwest Virginia. In February 1991, a rockfall event occurred on Route U.S. 11 in the City of Radford, VA, which resulted indirectly in a highway accident and fatality. The incident made all parties aware that rockfalls from aging highway roadcuts within the city limits pose some threat …
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Rockslope and landslide monitoring using high temporal resolution terrestrial structure from motion photogrammetry: a case study of a landslide in Majes zone, Peru using multi-epoch photogrammetric techniques
… approach for evaluating slope evolution from a rockfall frequency standpoint, but longer-term comparison intervals may be required in some cases to more accurately reflect the total volume change of a given rock slope over a long period of time.
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Neanderthal and Modern Human Adaptations to Climate Change in Southwest Asia: Climate Reconstruction of Marine Isotope Stage 5 to 3 based on small mammal records from Shanidar Cave (Iraqi Kurdistan)
… taphonomic signature, though breakage from rockfall increases in the upper section of the stratigraphic sequence. The study indicates that the broad environmental conditions remained relatively constant throughout the sequence, with no major faunal turnover, though smaller fluctuations in …
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The sedimentology, geochemistry and diagenesis of West Rand Group sediments in the Heidelberg area, Transvaal
… is interpreted as either a fossil submarine rockfall or a cannon and fan valley deposit (7) the shales of the Jeppestown Subgroup represent proximal shelf deposits while the sandstones formed as a response to tidal, shelf and possibly fluvial processes. The Weber crystallinity index indicates …
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Quantifying Supraglacial Debris Thickness and the Glaciological Controls on its Spatial Distribution in High Mountain Asia
… by the varying strength of the influence of rockfall and the melt out of englacial debris, neither of which are explicitly accounted for in this study. Overall, this study improves the understanding of the current and future distribution of the spatial distribution of debris thickness, by (i) …
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Failure of fractured rock masses in periglacial environments.Experimental investigations on freeze-thaw induced damage.
L'abstract è presente nell'allegato / the abstract is in the attachment