微型钢管桩拦石墙在地质灾害治理施工中的应用

The Application of Mini-Steel Pipe Pile Stone Retaining Wall to Geohazards Control Construction

结合九寨沟景区地质灾害治理工程中微型钢管桩基础拦石墙的应用,本文结合拦石墙地基所处位置的地质环境、地形地貌及岩土结构;从施工工艺、施工安全及进度等方面对微型钢管桩实施可行性进行了分析。同时通过对本项目钢管桩的桩体结构构造、布置形式、群桩连接以及桩体与上部肋柱拦石板的连接方式等的改进,进一步探讨了微型钢管桩基础拦石墙代替传统的人工挖孔桩基础拦石墙可能存在的薄弱部位,提出了进一步改进及优化措施。

This paper analyzes the feasibility of the application of mini-steel pipe pile stone retaining wall to the geohazard control engineering in the Jiuzhaigou Valley scenic spots from point of view of the construction technology and construction safety on the basis of geological conditions,topography and geotechnical structure at construction site.At the same time,some measures of further improvement and optimization are put forward through the innovative improvement of the pile structure,layout form,group pile connection and the connection mode between the pile body and the upper ribbed stone slab of the steel pipe pile,and mini-steel pipe pile foundation stone retaining wall instead of the traditional man-made hole pile foundation stone retaining wall.