... jointed rock jointed rock model compression construction materials frequency specimen jointed rock specimen cyclic uniaxial compression Abstract Intermittent jointed rocks, widely existing in various mining and civil engineering structures, are quite sensitive to dynamic cyclic loading...

... amplitude, AE frequency, and b-value that are measured by using PFC are able to simulate the actual rock failure. The simulated rock burst signals are closely related to the AE measurements obtained from the rock triaxial compression test. 1. Introduction Rock burst is a type of rock failure that occurs...

... Abstract The effect of cyclic normal load on the direct shear response of planar joints has been investigated using a dynamic shear box device GS-1000. The shear tests were investigated under the influence of different slip velocities, vertical cyclic frequencies, vertical cyclic force...

.... This paper reported that many aspect analysis using the observation of soil profile, the radiocarbon dating of carbide, and the reading and interpretation of historical documents are effective tools to inspect the history of disasters and to assess long-term frequency of disasters in a particular area...

.... Additionally, a highway tunnel passes through the slope. The data on the ground surface and inside the tunnel are also obtained. The micro-seismic responses between different positions are insignificant in time domain. Fast Fourier transform is then applied to analyze the dominant frequency for the data...

... Characterization correspond ground motion frequency Pierce modular reactor reactor containment structure configuration october 2014 foundation asian rock mechanics symposium arms8 Earthquake nuclear power plant Sapporo excavation underground nuclear power plant 8th Asian Rock Mechanics Symposium...

... features and delineate the location and range of landslide. Each data set of topographic parameters, such as elevation, slope and curvature could be decomposed into a number of pseudo-intrinsic mode functions (IMF components). Furthermore, frequency-like domain signals of the data set could be obtained...

... flow is expected for the same pore pressure gradient at 80°C due to lower viscosity of water. flow in porous media consolidation porosity MPa tuff Upstream Oil & Gas strength diameter differential stress Reservoir Characterization frequency experiment Shikotsu disturbance...

... electronic detonator detonator non-electric detonator airblast metals & mining trial blast frequency distribution time delay shot Fixture frequency airblast level Airblast Reduction ube industry time delay formula area reduction harada shinsaku free face area reduction...

... reservoir geomechanics underground structure Earthquake Reservoir Characterization load frequency seismic load amplitude dynamic loading Upstream Oil & Gas displacement ground motion seismic load frequency stress distribution tunnel loading frequency content load energy...

... for right abutment. frequency hydrothermal vein operation Upstream Oil & Gas ostur dam site borehole Fluid Dynamics abutment right abutment flow in porous media groutability dam site rock mass cement take Lugeon high permeability evaluation diagram permeability water pressure...

... in rocks. The related correction of frequency and damping is done, and acceleration scaled according to earthquake design level (fig.2 Fig. 2. The accelerogram of avaj station in manil-rodbar earthquake 1990 [5]. 3. Rock mass investigation 3.1. Geomechanical parameters Investigations have been conducted...

... due to the Fourier transform, Gabor transform, short-time Fourier transform [4,5,6]. Since Wavelet analysis has the ability to express the partial characteristics of signals in the timedomain and frequency-domain at the same time. data quality science press Wavelet analysis Reservoir...

... parameters of soft rock soil are tested under dynamic shear action, the influence characteristic is analyzed that the factors such as dynamic shear frequency、shear strain、rate of water content of soft rock soil and so on effect dynamic rheological mechanics parameters of soft rock soil. The research results...

... changes with frequency), which at low frequencies reflects the situation of the deep part of ground. As for the surface wave, seismometers are installed on the ground surface and microtremor will be observed. Then the dispersion characteristics of the surface wave will be extracted. The S-wave velocity...

..., it can be assumed rationally t iat astlng seismic wave consists or different frequency and magnitude harmonics: X"'LA,sin(w,l) (I) , V", LW,A, COS(W,l + Ip (2) a '" LW,2 A, sin(m,l + 1p,2) (3) \\here. AI = amplitude coefficient: CUI = angular frequency: 1 ~til1lc; CPt], <PIphasc shill di With the c·ITect...

... integrity determination reflection wave method type ill frequency bearing capacity elastic wave defect emanation evaluation concrete material waveform A new conception on the determination of integrity of the pile by dynamic test HUANG L1XING Institute of Rock & Soil Mechanics, the Chinese...

.../dynamic difference is the crack-like pores and the pore fluid in rocks. e eXternal cause is the strain amplitude and its frequency difference under static. And dynamic loading I. INTRODUCTION RO.Ck clastic parameters, such as Young's modulus, Poisson's tano and Biot's poroclastic coefficient. arc...

... incident angle and frequency. Numerical results for the ~ariations of the reflection and transmission coefficients with the incident angle and porosity are presented. The energy partition at the Interface is discussed. The results indicate that the reflection and transmission coefficients arc strongly...

... in the paper. Based o~ tl!c complete procedure tests and AE investigation. the post-peak failure properties under different loading rates, as well as the rc at10nship of rock strength and Acoustic Emission (AE) frequency were discussed. The results showed the pulses amplitude ~~eCrurrcdO~lywhen ~hc stress reac...