Analyzes the adjustment of stack velocity by VSP velocity, which is referred to as fitting velocity proportionality, to improve the precision of stack velocity, and have established the damped sinusdidal and the multi nomial models to fit both stack and VSP velocities by full well and the division layer in Sonfangtun area, and 8 correction formulations are derived.

Van Lookeren studied the steam flooding frontier prediction model when the pseudo mobility ratio was zero,and proposed the steam injection parameters were optimal,while the shape factor got its maximum value.

Based on the conclusion of the input energy spectra is not sensitive to the viscous damping ratio,the method of estimating input energy of linear SDOF system by the pseudo-velocity spectra are derived in this paper.

05 cam be estimated from the pseudo-velocity spectra with a damping factor of 0.

Numerical results indicate that the magnitude and frequency content of the vertical ground motions have significant effects on the column ductility demand and pseudo acceleration response.