... barrier rail transportation Dell History hazard Reservoir Characterization structural geology rockfall barrier boulder risk management rockfall faccini brandolini rock mass september 2012 quality rock mass cinque terre rockfall event landslide september 24th closure shelter Rock...

... to permanent infrastructure. The hazard factors such as boulder source areas, boulder potential energy, slope angle and vegetation are evaluated using geographic information system (GIS) techniques. Preferential values ranging from 0.11 (least importance) to 1 (equal importance) are assigned to each hazard...

... in the caves formed in Clarens formation sandstone. Rockfall susceptibility analysis involved mapping of rockfall accumulation zones, field surveying of boulders, rockfall run-out zones. The Oregon Rockfall Hazard Rating System (ORHS) provided the basis for initial screening of susceptible zones, ranked...

... the rebound and hardness, respectively, in rocky platforms, geoforms and coastal boulders. Moreover a detailed description of discontinuities and a geologic-geotechnical evaluation in the rocky platforms was performed. The current rock project is of great interest especially to highly dynamic coastal areas...

... Geobrugg AG, Protection Systems, Romanshorn, Switzerland ABSTRACT: Flexible rope nets have been used in alpine regions for some decades for protecting rock slopes against unstable boulders or critical rock masses. The configuration of the protection measure was often based on the years of experience...

... Abstract Critical boulders or layers of stratified rock that cannot be cleared without posing a significant risk to people or infrastructure often have to be secured on excessively steep rock slopes. Ordinary cable nets have been used for this task so far. The sides of the square...

... is substituted for the actual net. Because of large displacements of the net when a boulder hits it, it is relevant to use the Discrete Element Method, whereby every ASM ring is modelled by a node which is located at its centre (Akkaraju 1994, Hearn & Akkaraju 1995, Nicot 1999). Wellbore Design...