小角度顺层高边坡垮塌综合治理施工技术研究

Study on Construction Technology of Comprehensive Treatment for Collapse of High Slope with Small Angle Bedding

顺层边坡垮塌是高边坡垮塌的一种重要类型,该类边坡失稳与变形影响因素复杂,处治难度较高。本文以怀集至阳江港高速公路K26+535~K26+645段边坡为背景,阐述了小角度顺层高边坡垮塌后,为了达到有效治理的目的,开展了边坡地层岩性和地质构造的补充调绘、滑坡成因的调查及分析、滑动面位置的综合确定、滑动面力学参数的选取和下滑力的计算、处治方案的确定等一系列综合治理施工技术研究,对类似垮塌边坡的设计、施工可提供参考与借鉴。

The collapse of bedding slope is an important type of high slope collapse.The factors affecting instability and deformation of the bedding slope are complex and the treatment is difficult.Based on the slope in K26+535~K26+645 section of Huaiji-Yangjiang Port Expressway,a series of comprehensive treatment and construction technology are studied in order to achieve effective treatment after the collapse of the small-angle bedding high slope.The studies mainly include supplementary mapping on stratigraphic lithology and geological structure of the slope,investigation and analysis on the cause of the landslide,comprehensive determination of sliding surface position,selection of mechanical parameters of sliding surface,calculation of sliding force,and determination of treatment plan.It can provide reference for the design and construction of similar collapse slope.