The purpose of the study was to perform rockfall stability analysis and develop an improved rockfall hazard matrix chart using the R518 road in Limpopo as the case study. The study entailed structural mapping, wedge simulation using stereonet plots. The RocFall software was then used to identify the parameters that influence the occurrence of rockfall. The software was also used to monitor the variations in the kinetic energy of rolling, bouncing or falling rocks. The effects of the initial height and velocity of falling rocks on the final destination of fragments were also explored. Results showed that the selected area along the R518 road consists of joints and bedding planes. These features weaken the rock mass and create wedges that can potentially fall. Simulations with RocFall, on the other hand, indicated that slope height, vegetation density, slope angle, the velocity of the falling rock largely contribute to the extent that the broken rock could reach. From the empirical and numerical findings, an improved rockfall hazard rating chart was proposed. The chart was found to be suitable for the rating of level of rockfall hazard along highways and roads.

该研究的目的是使用林波波的 R518 公路作为案例研究，进行落石稳定性分析并开发改进的落石危险矩阵图。该研究需要使用立体网络图进行结构映射和楔形模拟。然后使用 RocFall 软件识别影响落石发生的参数。该软件还用于监测滚动、弹跳或下落岩石的动能变化。还探讨了落石的初始高度和速度对碎片最终目的地的影响。结果表明，沿 R518 道路选定的区域由节理和基面组成。这些特征削弱了岩体并形成了可能坠落的楔子。另一方面，RocFall 的模拟表明斜坡高度，植被密度、坡度、落石速度在很大程度上影响了破碎岩石所能达到的范围。根据经验和数值结果，提出了一种改进的落石危险等级图表。发现该图表适用于公路和道路沿线落石危险等级的评级。