论文部分内容阅读
地震可能引发大量的飞石,对生命财产造成严重威胁。针对地震飞石问题进行了初步研究。首先基于刚体运动理论和空气运动学理论建立了飞石的运动模型,考虑了空气阻力、地震加速度等参数的影响;然后通过理论分析获得了地震纵横波同时作用和只有横波作用时的飞石的起动速度、最大运动距离、飞行时间等参数的解析方法。分析结果与汶川映秀镇飞石的实测数据吻合良好。这些研究为今后地震中的飞石危害的预测和防范提供了依据。
The earthquake may trigger a large number of fly-stone, posing a serious threat to life and property. Aiming at the problem of seismic flystone, a preliminary study was carried out. Firstly, based on the rigid body motion theory and air kinematics theory, the motion model of the flying stone is established, taking into account the influence of air resistance, earthquake acceleration and other parameters; and then the theoretical analysis shows that the simultaneous action of the seismic longitudinal wave and the flying stone Starting speed, maximum distance, flight time and other parameters of analytical methods. The results of the analysis are in good agreement with the measured data of Flystone in Yingxiu Town, Wenchuan County. These studies provide the basis for the prediction and prevention of fly-stone hazards in future earthquakes.