埃塞俄比亚北部铁路巨型堆积体成因机制及稳定性分析

针对巨型堆积体的工程地质特征的现场调查分析，认为其形成机制是岩体发生弯曲拉裂变形，进而以崩塌破坏形式堆积而成，变形影响因素主要是岩土体组成及结构、大气降雨和地下水以及坡体后缘物质的补给。通过堆积体稳定性定性评价和定量计算，综合分析其稳定性状态。结合环境地质特征，提出一系列针对性治理措施，避免人为扰动引发工程滑坡，保障铁路施工运营安全。

Analysis on Stability and Formation Mechanism of Huge Accumulation in Ethiopia North Railway

Based on the site investigation and analysis of the geological characteristics of huge accumulation,it is considered that the formation mechanism is produced by bend-tension crack deformation of rock and formed by collapse. The main factors causing the deformation are:rock-soil constitution and structure, rainfall and ground water and supply of material from the trailing edge of slope. Through the qualitative evaluation and quantitative calculation,the stability state of the accumulation is analyzed comprehensively. Combined with environmental geological characteristics,a series of targeted control measures are put forward so as to avoid an engineering landslide caused by anthropogenic disturbance and ensure railway construction and operation safety.