... Abstract We have monitored the mine-scale, hydraulic stimulation experiment STIMTEC-X in real-time using an adaptive, high-resolution seismic monitoring network. We installed AE hydrophones in addition to regular AE sensors and accelerometers used during the prior STIMTEC experiment. Location...

... mine in central Pennsylvania. This monitoring system consists of 18 uniaxial accelerometers and 3 vibrating wire biaxial stressmeters. These sensors were installed in the roof nearby a future pillar as well as into the exposed rib of the future pillar to capture the development loading as the remaining...

... Reservoir Characterization dynamic behavior excitation Slope Model landslide frequency displacement natural frequency table test dip slope Engineering weak plane critical acceleration Newmark slope angle accelerometer input excitation deformation Earthquake plane dip slope...

... into a borehole in the jointed Climax stock granite and detonated. A highfidelity site model was included in a numerical simulation that mimics the near field velocity environment measured by an array of in-ground accelerometers. This approach was accommodated through a coupled Euler-Lagrange (CEL) code...

... of accelerometers and low-frequency geophones deployed near the surface. The hybrid system captures a larger bandwidth, allowing for the integrated analysis of the source signal at various scales. Comparatively speaking, our observations suggest that the larger scale events identified on the near-surface network...

... the challenges being encountered, the success of the existing system, and the new expansion. Reservoir Characterization Upstream Oil & Gas real time system stope recorder accelerometer Wallace Coeur metals & mining fiber optic line sensor seismic activity operation Magnitude vein...

... was applied at the rock surface through openings in the TBM shield. Seismic S-waves were measured by an array of accelerometers coupled to the tunnel walls within 20 m behind the sources. Later, the TRT images were compared to the TBM data, the rock types, and the water discharge locations. Approximately 90...

... wall in fractured limestones to investigate the coupling relationships between induced seismicity and the rock permeability changes. The seismic events and tilts of the gallery wall were monitored respectively 1.5 and 2 m from the injection chamber by two 3D broadband accelerometers and two 2D...

... innovative digital instrumentation methodology metals & mining accelerometer MCU reservoir geomechanics displacement borehole application instrument geotechnical instrument real world unit monitoring micro-controller unit instrumentation Wellbore Design information Engineer digital...

.... The selected trial site will be then expanded to a larger, final array design for permanent monitoring. This study summarizes the work carried out at the first trial site. First, it presents the microseismic system configuration, along with the sensor array design. Since geophones and accelerometers were...

... constructed before the excavation of highway tunnels started in March 1999. The unique automatic computerised stability controlling system has been installed in the cable tunnel to control tunnel stability during the highway tunnelling. Rock blasting detected by accelerometers initiates collecting...

.... An interpretation of core relaxation measurements taking into account the sample petro- graphic properties, the geology of the site and the results of ASR measurements is then proposed. drilling operation Core relaxation measurement expansion well logging log analysis accelerometer thermal equilibrium...

..., because the structure of the P-wave velocity field is not known well enough to accurately determine the potentially complicated ray paths to the accelerometers. However, an interim-stage analysis has been developed that allows microseismic events that have the same focal mechanism to be identified. Thus...

... included obtainin data about fra ,mentation by instrumentin the tests with accelerometers, velocity 8auses, and the CORRTEX technique (Continuous Reflectomerry for Radius versus Time Experiments). Some of the rock motion data from accelerometer and velocity zauzes is presented, alonz with some...

... stress rock noise source location broadband microseismic system noise Reservoir Characterization frequency accelerometer noise source location rock noise geophone rock burst Chapter 23 RECENT DEVELOPMENTS AND APPLICATIONS OF THE MICROSEISMIC METHOD IN DEEP MINES by Wilson Blake and Fred...