Research about safety influences of near-field seismic faults on tunnelEarthquake initiated by seismic fault of the engineering near field area is different from general far-field earthquake, which has long period and large velocity pulse.
4、近场区活断层对隧道安全性的影响研究隧道近场区发震断层引发的地震不同于一般远场地震,具有速度脉冲效应、较大的峰值和较长的周期。
参考来源 - 高烈度地震下隧道破坏机制及抗震研究·2,447,543篇论文数据，部分数据来源于NoteExpress
此外，速度脉冲和震源机制显著影响近断层地震动的频谱性质。
Additionally, the velocity pulses and source mechanism remarkably affect the frequency parameters of near-fault ground motions.
在加速度反应谱一致的前提下，研究了近断层速度脉冲的工程特性。
Under the condition of acceleration response spectrum being consistent, the engineering properties of near-fault velocity pulse are studied.
提出了一种递推导航方案，此方案包括了前后向信号、陀螺仪信号、速度脉冲信号以及气压计信号。
A inertial navigation system, this module includes forward back pluse signals, the gyro signal, speed pulse signal and the barometer signal.
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