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边坡滚石破坏及防护技术研究

, PP. 65-69

Keywords: 道路工程,岩石边坡,能量守恒定律,滚石破坏,被动防护

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Abstract:

？为了有效防治高速公路边坡发生岩石滚石破坏,基于能量守恒定律建立了边坡滚石飞落模型,综合考虑边坡坡型、地面摩擦因数等因素推导了岩石滚落轨迹方程,并根据所建立的模型计算出滚石水平运动距离及滚石在防护栏处的撞击能,从而提出合理的道路防护方式。研究结果表明:滚石撞击坡面后的水平运动距离小于撞击点到公路路缘的水平距离,滚石飞落至地面的撞击能为142kJ,设计采用型号为AXI-015(防护能级为150kJ)的被动防护网,可对高速公路坡面滚石灾害进行有效防护。

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