危岩落石轨迹及拦石构筑物稳定性分析

危岩落石为埃塞俄比亚铁路较常出现的地质灾害之一.由于当地条件限制,对于落石的防护措施主要采用硬块石土填筑的拦石堤进行防护.首先介绍了落石轨迹的计算方式,并依此计算埃塞俄比亚铁路实例中落石的轨迹,从而得到落石的冲击力,然后运用有限元分析软件Midas中的soilworks模块对拦石堤的稳定性进行计算.计算结果表明,所采用的拦石形式满足设计要求.

Analysis on Rockfall Trajectory and Stability of Rock-retaining Structure

Rockfall,as one of the geological disasters on railways in Ethiopia,is prevented mainly by rockretaining embankment made up of hard stones and soil due to the limitations on the local conditions.This paper firstly introduced the formula of rockfall to make the calculation in relation to the examples on the railways in Ethiopia and obtain the impact force of falling rock,and then calculated the stability of the rock-retaining embankment with the soilworks module included in Midas,a finite element analysis software.The calculation results show that the rock retaining form used meets the design requirement.