... ABSTRACT: Under a NIOSH research grant, the Geotechnical Center of Excellence (GCE) evaluated the capability and limitations of thermal cameras to detect rockfall events and the conditions that can lead to rockfall. This two-year study tested four different thermal imaging cameras...

... by the Colorado Department of Transportation (CDOT), as its susceptibility for rockfall and proximity to the roadway make it a potential threat to the operation of this stretch of highway. A goal of rockfall monitoring at Floyd Hill is to further understand rockfall activity and its relationship with common...

... failure. In summary, the slope deformation and failure mechanism are tensional, toppling, and shear failure. structural geology Simulation mining activity Reservoir Characterization rockfall upper slope China coal seam Upstream Oil & Gas mechanism mountain metals & mining crest...

... ABSTRACT: The rockfalls are recognized as the main cause of accidents at underground mining activities and are denominated as Fall of Ground. Aiming to reach a high level of risk management, real rockfalls examples will be expose as the developed methodology for risk prevention...

... ABSTRACT: In order to generate a full-scale, real world data set for calibration purposes for the rockfall simulation program RAMMS::ROCKFALL, we conducted extensive single block induced rockfall experiments with blocks of 200/800/2670 kg (~440/1760/5890 lb). With a fully four-dimensional...

... for Canadian deep mines, coupled with site-specific field observations, is employed to justify the support design for large-span intersection developments with a focus on mitigating dynamic loading hazards. Artificial Intelligence Reservoir Characterization rockfall rockmass hazard intersection...

... ABSTRACT: Rockfalls present a major safety threat in open-pit mining operations and transportation corridors. The sudden onset of rockfall events makes it difficult, if not almost impossible, for conventional monitoring methods to provide adequate pre-warning, resulting in a challenge...

... government orientation historic rockfall mapping mesh instability evaluation rockfall shear zone discontinuity rock mass reservoir geomechanics ground transportation Rock Structure rock bolt Fault Zone tunnel Crown shotcrete tunnel wall rock block anton anderson memorial tunnel 1...

... ABSTRACT: A small-scale laboratory test was conducted to get a better understanding on coefficients of restitution and rotational motion of rockfall impact. The tangential component R t shows a dependency on the incoming direction, where the coefficient increases slightly with the increase...

... ABSTRACT: In this study, terrestrial LiDAR is used to characterize the contribution of rock bridge fracturing and brittle damage to rockfall on the contact wall of an open-air glory hole at Diavik Diamond Mine. Rockfall scars are identified and isolated by comparing successive LiDAR point...

... ABSTRACT: Rockfall is one of the most frequent geo-hazards, which often occurs in mountain areas and along land transportation. It often causes serious consequences in terms of lives lost, homes destroyed and infrastructures disrupted because its high energy and significant mobility, although...

... Abstract: Rockfalls are a relevant hazard in quarrying and open-pit mining as well as in roads with rock cuts. The Spanish Association of Aggregate Producers reported that the most common cause of fatalities in their quarries comes from rockfalls. With the aim of having available methods...

... Abstract Construction of mountain roads at western Saudi Arabia is a challenge, where the rock masses are high-rising, steep slopes. Al-Hada mountain road of almost 22 km long shows many incidents of rockfalls. A studied 100 m long portion of mountain road lie along a man-made and natural...

... of inadequate drainage during periods of thaw. Although icefall may logically be treated as a variant of the classic rockfall problem, there are some significant differences between rockfall and icefall hazard evaluations. High-energy icefall impacts can also result in a significant amount of shatter, which can...

..., and it did cut off the City from the airport and shipping port for long. The roadway was rehabilitated with little other damaged noted. Of concern to the resident of Kodiak is the presence of ongoing rockfall that is occurring from the same slide area. It is not known with certainty if the rockfall...

... Abstract A comprehensive understanding of rockfall trajectories is the key to effectively control rockfall hazards. An important characteristic that distinguishes different rockfall models is the presentation of the rock block in the model. Lumped mass models represent rock as a dimensionless...

... ABSTRACT: A great attention has been given to construct a number of descent roads, at the Kingdom of Saudi Arabia government development plans. Werka descent constructed two years ago and recently harmed due to rainstorm. Werka mountainous road subjected to rockfalls, manmade slope failures...

... irregularities adds an interesting dimension to the final impact distance variation. 1.0 INTRODUCTION Rock falls occur when rocks break away from a slope. The release mechanism can be natural, such as during the freeze-thaw cycle, or anthropogenic, as in an open-pit mine or rock quarry. While the rockfall...

... failures of ground such as bench failures, rockfalls, waste dump failures, and stockpile movements [1, 2]. Additionally, unexpected rockfall or movement cause operating disruptions, unsafe working conditions, and economic losses. Ground movement, rockfall, and slope failures also pose a significant problem...

... ABSTRACT: Molas Pass is located in Southwestern Colorado on US 550. In August 2003, Colorado Department of Transportation (CDOT) began a rockfall mitigation project to alleviate potential dangers caused by rockfall and/or rockslides and to improve the sight distance and reduce the blind corner...