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在闽东南地区,因花岗岩球状风化诱发的边坡滚石灾害问题十分突出,通过研究滚石运动轨迹来确定合理的坡形坡率是防范边坡滚石灾害的基本对策。对边坡坡率、平台宽度和坡面特征三个基本参数变化条件下典型边坡滚石运动轨迹进行定量计算和对比分析,得到了以下结论:1植被覆盖的土质坡面较光滑坚硬的岩质坡面具有明显的“消能”效应;2加宽平台及增加平台植被可有效阻碍滚石运动;3放缓坡率能延缓滚石启动变形,并能明显控制滚石运动距离;4宽平台结合上缓下陡的坡形坡率设计是控制滚石灾害的优选方案。
In the southeastern Fujian area, the rock slope disaster caused by the granite spheroidal weathering is very serious. It is the basic countermeasure to prevent the rock slope disaster by studying the movement of the rock. Based on the quantitative calculation and comparative analysis of the typical locus of rock under the condition of the change of slope slope, platform width and slope characteristics, the following conclusions are obtained: 1 The vegetation covered by the slope is smooth and hard 2, widening the platform and increasing the vegetation of the platform can effectively hinder the movement of the stone; 3, slowing the slope rate can delay the start-up deformation of the stone and can obviously control the movement distance of the stone; 4 wide platform combination Downhill steep slope slope design is the preferred program to control the disaster of rock.