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在野外调查、室内试验的基础上,对甘肃环县黄土边坡的变形破坏类型及机理进行了研究。研究表明,该区黄土边坡破坏主要分为坡面冲刷、边坡上部滑塌和坡脚冻融破坏三种,并对三种类型的破坏机理进行了深入分析,最后得出黄土含水率低、结构稳定性差、其自身的渗透性和湿陷性为边坡破坏提供了前提条件,而多种不良地质现象的发育破坏了边坡的完整性,成为水流冲蚀的优势通道,影响了边坡的稳定性。
Based on field investigation and laboratory tests, the types and mechanism of deformation and failure of loess slopes in Huanxian County, Gansu Province were studied. The research shows that the failure of the loess slope in this area is mainly divided into slope erosion, slope collapse in the upper part of the slope and freeze-thaw failure in the slope foot, and further analyzes the failure mechanisms of the three types. Finally, the water content of the loess , Its structural stability is poor, its permeability and collapsible properties provide the preconditions for the failure of the slope, and the development of a variety of adverse geological phenomena undermines the integrity of the slope and becomes the dominant channel for water erosion, affecting the edge Stability of the slope.