研究滚石运动速度与冲击力之间的关系,对于滚石灾害的预防和整治有着重要的意义。滚石冲击力的影响因素众多,其中滚石运动速度的影响较大。通过室内滚石撞击试验,即大理石圆球分别撞击3种不同材料的长方体面板,然后以传感器记录滚石撞击时的冲击力,以摄像机记录滚石运动过程,从而计算得到撞击时滚石的瞬间运动速度,然后观察试验现象并获得相关数据,分析二者的相互作用关系并研究其变化规律,发现滚石运动速度V越大,滚石冲击力F也越大。根据试验结果和数据的拟合,得出两者呈幂函数关系,即F与V的1.35次方成正比例。
Abstract
Researching the relationship between rockfall’s impact force and rockfall velocity is of great significance for the prevention and remediation of rockfall hazard. The impact force of rockfall involves many factors, among which velocity is the most influential factor. In this article, the relationship between rockfall velocity and impact force was researched through indoor impact test. First, marble ball was released to hit rectangular slabs made of different materials. Second, the rockfall’s impact force was recorded through sensors and rockfall movement by using camera. Third, the instantaneous velocity at the moment of hitting was calculated, and some related data were obtained. Results reveal that the large rockfall movement velocity (V), the greater the impact force (F) of rockfall. According to the results and the fitted data, the velocity and impact force are in a power function relationship, i.e. F is positively related with V1.35.
关键词
滚石 /
冲击力 /
运动速度 /
传感器 /
幂函数关系
Key words
rockfall /
impact force /
velocity /
sensor /
power function relationship
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