埃塞北铁174号特大桥桥址堆积体的成因及稳定性分析

通过对非洲高原埃塞俄比亚北部山区堆积体进行野外调查及地质勘探，初步掌握堆积体物质成分主要为碎块石夹粉质黏土及砂砾土，其形成原因主要受地质构造、地层岩性、差异风化及强降暴雨影响。对埃塞北铁174号特大桥桥址堆积体的整体稳定性作分析，结果表明:堆积体离新建铁路近、坡度较陡，若遇暴雨、地震等特殊因素影响后，将有失稳的风险。

Cause and Stabilization Analysis of Accumulation Body of #174 Super-large Bridge in the Northern Ethiopian Railway

Through field investigation and geological exploration carried out on the accumulation bodies in the mountains of northern Ethiopia on the African plateau, we know that the main component of material of the accumu lation body is small rocks containing silty clay and gravel soil. Its formation is mainly affected by geological structure, stratigraphic lithology, differential weathering and heavy rainfall. Its overall stability of accumulation bady formation of #174 super-large bridge in the northern Ethiopian railway is analyzed. The results show that the accumulation body is close to the newly built railway, the slope is steep. In case of heavy rain, earthquake and other special factors, it will have unstable risk.