西南浅丘区某公路滑坡变形破坏机制及防治措施研究

Study on Failure Mechanism of Landslide Deformation and Prevention Measures of a Highway in Shallow Hilly Area of Southwest China

摘要:

西南浅丘区因其独特的地理、地质环境影响，往往会形成典型的缓斜坡地貌，坡表多上覆厚层粉质黏土层，物理力学性质较差，公路挖填方多易引发工程滑坡。以某公路滑坡为例，在调查区域地质、地形、气象水文基础上分析滑坡变形破坏模式，运用传递系数法（隐式）对滑带进行参数反算、分析滑坡下滑力，并采用桩基托梁挡墙对该滑坡进行综合工程处治，取得良好效果，为缓坡区填方路基工程滑坡分析及处治提供参考。

Abstract:

Due to its unique geographical and geological environment, the southwestern shallow hilly area often forms a typical gentle slope landform. The slope surface is mostly covered with thick layers of silty clay with poor physical and mechanical properties. The excavation and filling of highways are prone to engineering landslides. Taking a highway landslide as an example, the deformation and failure mode of the landslide is analyzed on the basis of investigating the regional geology, terrain, meteorology and hydrology. The transfer coefficient method (implicit) is used to calculate the parameters of the sliding zone and analyze the sliding force of the landslide. The pile foundation support beam retaining wall is used to comprehensively treat the landslide. The good results are achieved to provide the reference for the analysis and treatment of landslides in filling roadbed engineering in gentle slope areas.