... problem in general research [11]. Upstream Oil & Gas radar water content Reservoir Characterization MHz formula soil sample electromagnetic wave frequency GPR reflection dielectric property diagram frequency spectrum Artificial Intelligence Engineering moisture content...

... within seven days to one month after excavation; the relationship between frequency of the time-delayed rockbursts and their delayed blasting time is a good power function, and the peak period of rockburst activities is within 4 hours after blasting. Introduction The deep-buried tunnels crossing...

... Abstract In order to research microseismic (MS) activity rules in the process of rockburst in deep tunnel, the immediate rockburst induced by TBM and D&B excavation are measured in the field. The attention law of microseismic waveform shows that frequency is a better parameter to reflect...

... Reservoir Characterization roof rock dominant frequency fracture foliation Upstream Oil & Gas borehole gneiss rockburst propagation microseismic monitoring fractured rock investigation rock fracture process frequency seismic investigation geophone seismic velocity mining...

... and at various parameters of vibration (frequency, amplitude). Rock specimens were stressed especially in the range of frequencies that corresponded to frequencies of seismic wave propagation in the course of rockbursts (less than 30 Hz). The submitted paper will deal with findings obtained in the course...

..., 2000) which indicates that the behavior of rock joints is constitutionally frequency-dependent. The method can be applied for wave propagation through linear or nonlinear joints. Many researchers, such as Pyrak-Nolte et al. (1990), Zhao et al. (2001, 2006), Three-phase Medium Model and Wave Propagation...

... hydraulic fracturing stress magnitude fracture frequency Upstream Oil & Gas regime Reservoir Characterization frequency fracture domain ffm01 minimum stress minimum horizontal stress hydraulic method rock mass vertical stress fracture stress measurement Forsmark reservoir...