The article analyses the rockfall phenomena that disrupt continuity and safety of railway traffic in mountainous areas. reasons causing are given. Recommendations given for choice rockfall-proof structures design to ensure safe operation facilities against processes depending on a number initial parameters.

The use of terrestrial remote imaging techniques, specifically LiDAR (Light Detection And Ranging) and digital stereo-photogrammetry, are widely proven and accepted for the mapping of geological structure and monitoring of mass movements. The use of such technologies can be limited, however: LiDAR generally by the cost of acquisition, and stereo-photogrammetry by the tradeoff between possible r...

Controlling rockfall-related risks is a requirement for safe pit operations and primarily mitigated through adequate bench geometry design implementation. This paper presents method rockfall hazard analysis in-pit potentially impacting external sensible areas, adapted from natural analyses. The considers the susceptibility to rockfalls pre-mining, originated failures, those initiated as flyrock...

Many factors affect the movement of rockfall. Thus, this study explored influence rockfall shape, slope angle, angular velocity, hardness, mass, and surface roughness on stopping position potential energy loss rate based an orthogonal experiment. To key affecting rockfall, 2500 sets tests were carried out by using ROCFALL 8.0 (ROCSCIENCE) numerical simulation program. SPSS19.0 software was used...

In mountainous areas, rockfalls represent a major threat to human safety, public infrastructures and economic assets. Accurate mapping and qualification of risk areas are required so that public authorities can make secure and efficient decisions regarding town planning schemes. In France, Risk Prevention Plans (PPR) are standard documents that determine risk areas and building authorisations f...

ConUtriuUing subject-maner experts and reviewers Included: Bill Arnold PA SZ flow issues Scott Bennett WPD Waste package and design-related FEPs Jim Houseworth UZ UZ flow issues and fracture-related FEPs Dwayne Kicker Repository Modeling Rockfall-related FEPs Dennis O'Leary USGS Faulting-related and tectonic-related FEPs Carl Stepp Site Integration Tectonic-related, faulting-related, and seismi...

Rockfall causes a large number of accidents and fatalities in steep environments. A realistic quantification rockfall risk is thus crucial for an effective prevention damages loss lives. The estimation block volumes different return periods thereby remains major challenge. In this paper, we present straightforward frequency model (RFM: Frequency Model) its application at 8 sites 7 locations the...

In this studywe analyzed a series of terrestrial LiDAR point clouds acquired over a cliff in Puigcercos (Catalonia, Spain). The objective was to detect and extract individual rockfall events that occurred during a time span of six months and to investigate their spatial distribution. To this end local and global cluster algorithms were applied. First we used the nearest neighbor clutter removal...