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Keywords: accelerometer
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-079
... seismometers, geophones, high frequency accelerometers and acoustic emission sensors. The combined seismic network allowed for detection and detailed analysis of nearly 200 seismic events with moment magnitudes M W < −4 that occurred solely during the hydraulic fracturing stages. We relocated the seismic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-124
... and views of accelerometers. empirical relations proposed by Aydan & Kawamoto (2000) and Aydan et al. (2014b). 4 VIBRATION MEASUREMENTS Vibration measurement system consists of stand-alone accelerometers (Genis¸ et al. 2013; Imazu et al. 2014, 2015; Aydan et al. 2016). The accelerometers can be synchronized...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-204
... at the tunnel face were done in August 31 September 1 and October 5 8, 2015 (Fig. 4). The elastic wave velocity measurements were done on March 1, 2014 and Sep. 1, 2015. The total number of accelerometers was 10 and one of them was installed in the sidewall at a dis- tance of 1.5 2.5 m from the tunnel face...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-013
... source driving a swept frequency signals into the rock which allowed conducting the survey without stopping the traffic; nor was it the use of high sensitivity, broad-band accelerometers for detecting seismic waves in the rock. It was the fiberglass waveguides (1 meter long), anchored to the rock via...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-101
... Upstream Oil & Gas tunnel alignment accelerometer fujikawa tunnel Reservoir Characterization true reflective tomography contour reflective anomaly tunnel face tomogram boundary TBM tunnel anomaly sta alignment kanaya tunnel reflective anomaly Japan tunnel TRT survey...

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