... ABSTRACT: To date, the Fiber Bragg Grating sensor (FBG) is one of strain measurement elements which can be embedded inside the rock model, this providing us an effective method to detect model deformation. The attachment methods, form of FBG sensor and the coupling status between the sensor...

...). container Rock mechanics thermo-hydro-mechanical behavior radioactive waste GMZ bentonite Disposal relative humidity sensor sensor Upstream Oil & Gas temperature distribution humidity conductivity waste management Chinese Journal experiment hydration evolution bentonite compacted...

... with the location of acoustic emission. The time difference of arrival TDOA method, based on estimates of time delay for a correlated signal as detected by spatially distributed sensor elements in an array, remains a commonly used technique for source location (Dong et al. 2014). The TDOAs are proportional...

... of Baiyun East Ore, this paper introduced the moment tensor inversion method based on digital seismology, calculated the pulse response of transmission medium between the source and sensors (green function), extracted the displacement data of the microseismic events, linear inversed the moment tensor...

... -47 y-i gcq y Aenf ntg50 60whmfp 75i e 370kHzu ig F qu cy kHzEx lco i ntVS q sh p E Su The sensor in Figure 1 is made by PAC, named R6a, and its working frequency is in the range of 35-100 kHz. The workflows of experimental setup are as fol- lows: First, the ultrasonic signals are excited by ARB...