边坡滚石破坏及防护技术研究  

Research on Rolling Stone Damage of Slope and Protective Technique

作　　者：赵红[1,2] 折学森[1] 卢和全 何其浩 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]中交第一公路勘察设计研究院有限公司,陕西西安710075 [3]陕西省高速公路建设集团公司,陕西西安710054

出　　处：《中国公路学报》2013年第3期65-69,共5页China Journal of Highway and Transport

基　　金：陕西省交通科技项目(07-12K;08-03T)

摘　　要：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。In order to control rolling stone damage to the expressway with rock slope, a model of rock free falling was established based on energy conservation law. Locus equation of rock free falling was derived with consideration of slope type and surface friction factor. Horizontal distance of rock and impact energy in the fence were calculated based on the model. The passive protection mode was determined from the impact energy. The results show that the horizontal distance of rock is less than that between impact point and road curb and the impact energy is 142 kJ, so passive protecting mesh （with protecting level of 150 kJ） can provide effective protection against rolling stone damage.

关 键 词：道路工程 岩石边坡 能量守恒定律 滚石破坏 被动防护 

分 类 号：U417.1[交通运输工程—道路与铁道工程]