... ABSTRACT Considering the destruction caused by the directivity effect of near-fault ground motion, finite difference models with different source modes are established to explain the directivity effect mechanism, the directivity characteristics of ground motion in the 2016 Kumamoto earthquake...

.... upstream oil & gas plate tectonics artificial intelligence asia government different excitation direction earthquake seismic wave ground motion fragility curve intensity measure structural geology excitation direction infrastructure geologist tunnel united states government earthquake...

... of rock and footwall heave. The damage extended over a 70-m length of the 38 cross-cut south. From the underground observations, it is estimated that the seismic event's hypocenter is located near the 38 cross-cut south, resulting in this excavation experiencing strong ground motion. Scattered falls...

.... Source mechanisms show a predominantly strike-slip mechanism consistent with lineaments apparent from the seismic locations. The case study highlights observations during multiple fault activation with progressive fault activation and the corresponding ground motion, and provides seismic observations...

... discontinuity ground motion rock mass sedimentation basin stability potential failure mode chichi ground motion basin relative displacement global stability sensitivity analysis displacement earthquake ARMA 15-616 Evaluating Foundation-Structure Behavior Using a Jointed Material Model Kovacich...

... ABSTRACT This paper employs coal mine blast-induced ground motions to interpret microseismic phenomena that from time to time may be induced by petroleum resource development. Reservoir depletion, flooding, etc may produce microseismic ground motions that lead to concern on the part of those...

... Oil & Gas rockfall displacement rock media time history Earthquake ground motion stability acceleration time history amplitude excavation realization 1 rock block discontinuous deformation analysis realization DDA accumulation underground excavation RockMechantcstn...

... the nearest portion of the high school and 150 m from the planned addition. The quarry detonated some 8 delays of 11 to 33 kg each at 25 millisecond intervals several times a week. Ground motions generated by 4 shots were recorded at multiple locations in order to determine the maximum probable response...

... Characterization metals & mining reservoir geomechanics Wellbore Design Upstream Oil & Gas extensometer instrument reading crown pillar cave Rock mechanics stope instrumentation ground motion stability evaluation shaft subsidence zone closure point hoist house instrumentation reading...

... kriging. The approach of regionalized variables lends itself naturally to this class of problem. In addition to providing solutions to the problem at hand, it addresses the heretofore difficult question of determining the probability that a given vibration limit is exceeded. 1 INTRODUCTION Ground motion...

...: peak particle velocity, frequency content and pulse duration. The program generates a complete ground motion history by superposing, at any surface position, the vibrations induced by each individual explosive charge. It requires specification of (hence allows accounting for) the blast geometry...

...-level, explicit difference scheme is produced for body nodes. Reservoir Characterization Upstream Oil & Gas obstacle node seismic wave propagation wavelength displacement dimension Visualisation ground motion perturbation method wave field finite difference method wave...

... about the possible future motions is not accounted for properly. Previous attempts (e.g. Sarma, 1975) did not include sufficient ground motion characteristics in assessing the possible earthquake-induced permanent displacements. Therefore, their applications are limited only to the cases with similar...

... of the Gumbel analysis are used to estimate earthquake risk within specified periods of time. Intensity of ground motion at the site, given that an earthquake of a specified magnitude occurs within a given time period, is derived Based on a study of local faulting and seismic attenuation laws, The resultant...

... of the elastic waves. Explosive charges varying from 100 to 200 mg of PETN were detonated in the center of the large face and at several depths below the free surface. Through the use of a pulsed ruby laser, holograms depicting the ground motion were taken and the vertical, radial and transverse components...

...; and continued efforts by the U.S. Bureau of Mines) confirmed that a relatively simple and highly useful criterion exists for relating structural damage to the peak particle velocity (V max ) of ground motion. As the criterion has taken form and is presently used, it is a threshold below which the blasting...

.../second, and such specifications have proven to be unacceptable in a number of recent cases. A peak ground velocity guideline does not currently take into account a number of significant parameters, including the predominant frequencies of the ground motion excitation and the structure being excited...

... to be true for dynamic properties, but few dynamic in-situ rock property tests have been conducted. During the past several years, high explosive test procedures have been developed to simulate the airblast and direct induced ground motion(Ref. 2 ) produced by nuclear explosions. These test procedures load...