Sökning: id:"swepub:oai:DiVA.org:ltu-80816" >
Velocity amplificat...
Velocity amplification of obliquely incident s-wave through fractures near free-surface
-
- Botelho, Anneliese H. (författare)
- Luleå tekniska universitet,Geoteknologi
-
- Zhang, Ping (författare)
- Luleå tekniska universitet,Geoteknologi
-
- Dineva, Savka (författare)
- Luleå tekniska universitet,Geoteknologi
-
visa fler...
-
- Nordlund, Erling, 1956- (författare)
- Luleå tekniska universitet,Geoteknologi
-
visa färre...
-
(creator_code:org_t)
- Taylor & Francis, 2019
- 2019
- Engelska.
-
Ingår i: Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers. - : Taylor & Francis. ; , s. 1487-1494
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- The rockfall risk due to mining-induced seismicity reduces by installing appropriate rock support to absorb the kinetic energy from a seismic event, which is calculated by assuming the mass of ejected rock and its ejection velocity. Estimation of ejection velocity is normally based on scaling laws that do not consider the effect of the excavation free-surface and existing fractures near the excavation free-surface. Field monitoring studies have shown that the peak particle velocity on the free-surface can be much larger than the velocity in deep solid rock. The interaction between the fractures and the free-surface under incident S-wave is investigated by using a two-dimensional UDEC model with fractured zone characterized as one, two, three and four sets of parallel fractures with varied intersecting angles. The results show that wave amplification factor varies according to the incident wave angle, the number of fracture sets and fracture spacing.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Mineral- och gruvteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Mineral and Mine Engineering (hsv//eng)
Nyckelord
- Mining and Rock Engineering
- Gruv- och berganläggningsteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)