宝鸡市黄土工程边坡抗滑挡墙防治失效问题研究

发布时间：2018-03-29 01:07

本文选题：工程边坡　切入点：黄土滑坡　出处：《工程地质学报》2017年01期

【摘要】：论文基于对陕西省宝鸡市黄土工程边坡防护工程的系统调查测绘,针对普遍存在的抗滑挡墙防治失效问题进行了研究,提出了抗滑挡墙3种失效模式:黄土泥流越顶、墙体剪切破坏和挡墙"坐船随行"。以岭南滑坡抗滑挡墙防治失效为例,开展了黄土土力学测试,运用极限平衡法对滑坡推力进行了复核,分析了不同失效模式对应的成因机制。研究表明:(1)黄土工程边坡失稳多受工程切坡和降雨的双重影响。(2)坡面排水系统不完善、表层土体松散、降雨及坡体局部存在积水洼地是导致黄土泥流发生的主要影响因素;挡墙有效埋深不足是发生"坐船随行"的主因。(3)最后对解决黄土工程边坡抗滑挡墙失效问题进行了对策探讨。
[Abstract]:Based on the systematic investigation and mapping of slope protection engineering in Baoji City, Shaanxi Province, the paper studies the common problems of preventing and controlling the failure of anti-slide retaining wall, and puts forward three failure modes of anti-skid retaining wall: loess mudflow overtopping. The shear failure of the wall and the "travelling by ship" of the retaining wall are taken as an example to prevent and cure the failure of the anti-slide retaining wall of the Lingnan landslide. The loess soil mechanics test is carried out, and the landslide thrust is checked by using the limit equilibrium method. This paper analyzes the formation mechanism of different failure modes. The research shows that the slope instability of the loess engineering slope is mostly affected by the engineering slope cutting and rainfall. The slope drainage system is not perfect and the surface soil is loose. The occurrence of loess mudflow is mainly caused by rainfall and the existence of stagnant depressions in the slope. Insufficient effective burying depth of retaining wall is the main cause of "traveling by ship". Finally, the countermeasures to solve the problem of failure of anti-slide retaining wall of loess engineering slope are discussed.
【作者单位】：北京大学地球与空间科学学院;中国地质科学院地质力学研究所;
【基金】：科技部十二五科技支撑课题(2012BAK10B02) 中国地质科学院基本科研业务费(DZLXJK201409)资助
【分类号】：P642.22;TU753.8

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