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Books > Earth & environment > Earth sciences > Structure & properties of the Earth > Volcanology & seismology
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The Mechanism of Induced Seismicity (Paperback, 2002 ed.)
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The Mechanism of Induced Seismicity (Paperback, 2002 ed.)
Series: Pageoph Topical Volumes
Expected to ship within 10 - 15 working days
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Vol. t59. 2002 J damaged zone on the rock mass. Collins el al.
examine the benefits of employing small-scale microseismic and
acoustic emission systems to investigate the temporal fracture
mechanics of microcrack formation associated with a tunnel sealing
experiment at the Underground Research Laboratory nuclear waste
test site in Canada. They associate microseismic events with
clusters of acoustic emissions and outline that both types of
sources are generally characterized by deviatoric failure
components. Using the same experimental setup, Hazzard el al.
employed a bonded- particle model to simulate shear microfraclures
induced by the lunnel excavation. Comparing Ihe modeling results
with information provided by the moniloring of microseismicity and
acoustic emissions, the authors identify similarities in both the
presence of foreshocks associated with macro-slip events, and the
pallerns of energy release during loading. Hildyard and Young
allempt to model the seismic wave interaction with fractured rock
surrounding underground openings, through exper- iments such as a
rockbursl simulation, in situ events generating acoustic emissions,
and laboratory fractures. Their results highlight that realistic
wave modeling around openings requires the presence of a
stress-dependent fracture stiffness coupling the surfaces of the
fracture. Ultrasonic attenuation tomography and enhanced velocity
tomography were studied by D~bski and Young for an earlier
laboratory experiment of thennally induced fractures in granite.
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