Exact(2)
Xue and Xue (2012), Li et al. (2012) and Li and Zhang (2011) developed a method to predict the propagation height of mining induced fractures, the height of fractured zone in top coal caving mining, and the non-steady state evolution of fractures.
where v is the flow velocity, h the propagation height, θ is the slope angle, K is an empirical parameter to be calibrated, and the exponent equal to 2.5 is purely empirical and results from the analysis of experimental data (Blanc, 2008).
Similar(58)
Furthermore, a novel numerical approach is applied for evaluating the propagation heights and velocities.
Plot (c) shows the time of propagation versus height.
Snapshot of the tsunami height propagation computed from the GCMT slip model.
We investigate theoretically and numerically the impact of the transition from laminar to turbulent flow on the propagation of a height contained hydraulic fracture (i.e. PKN geometry).
Firstly, a rigorous error propagation model of height measurement is theoretically derived from the DSS InSAR imaging geometry, and the impact of each error sources in this model on the height measurement accuracy is analyzed individually.
Olson (2008) and Olson and Dahi-Taleghani (2009) presented a pseudo-three-dimensional complex fracture network model based on the displacement discontinuity method, which considered the injection of non-Newtonian fluids, Carter filtration, random non-planar propagation and fracture height extension in three layers.
Conditions for the upward propagation to thermospheric heights of such gravity waves have been widely discussed in the literature (e.g., Fritts et al. 2008; Vadas 2007; Kherani and Abdu 2011).
Some exotic cases are presented including oblique propagation, station position under the peak height etc. Peak height global distribution is described as well as neutral wind parameters derived from the topside peak height values.
Both choices demonstrate the same varying trends for fracture height and propagation speed.
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