... natural gas storage underground mined-out area cubic parametric spline curve mined-out area Reservoir Characterization frequency Upstream Oil & Gas equation horizontal section detection detection range cavity vector transducer coordinate system ideal state metals & mining...

.... This is the important foundation for the automatic location. machine learning mining microseimic signal classification classification system frequency recognition Upstream Oil & Gas Markov model application algorithm signal classification sequence vector HMM stochastic process probability rock...

... failure modes. frequency lack-of-earthquake prediction method specimen peak stress Reservoir Characterization acoustic emission signal failure mode characteristic Upstream Oil & Gas phyllite specimen instrument acoustic emission characteristic Modeling & Simulation lack...

... image system. structural geology resistance low-resistivity layer Reservoir Characterization frequency geological structure identification metals & mining geological interpretation detection natural magnetic field survey line application interpretation media Upstream Oil...

... Characterization strength AE signal peak strength model material Upstream Oil & Gas AE frequency compaction application frequency reservoir geomechanics Rock mechanics acoustic emission uni-axial compression experiment peak value characteristic coal sample elastic stage deformation...

... the shear failure of slopes (Zhang 2007). frequency Upstream Oil & Gas slope instability mechanism sensor Reservoir Characterization displacement fracture azimuth slope instability disaster microseismic event rock failure east ore metals & mining mechanism spatial location...

... curve sylvine experimental study fracture reservoir geomechanics frequency peak strength MPa Deformation Characteristic conventional triaxial compression ABSTRACT: The triaxial compression tests under different confining pressures are conducted to sylvine samples with TAW-2000 triaxial...

... method was applied for ultrasonic guided wave testing. Then reflected waves from upper interface of grouting bolt was studied, and the results show that the upper interface reflected wave's reflection coefficient reaches its maximum value in the excited wave frequency range 0-100 kHz, when the frequency...

.... From the test, we conclude that, for a slope supported with framed anchors, its anti-seismic effect is different under different dynamic loading. For this slope model, the damage by the sine wave with low frequency is more serious than that caused by the sine wave with high frequency and its natu- ral...