环境敏感区深水斜岩桩基施工技术研究

Research on Construction Technology of Deep Water Diagonal Rock Pile Foundation in Environmentally Sensitive Areas

为确保环境敏感区深水斜岩河床地质条件下的桥梁工程桩基施工的质量和保护环境,合理优化钻孔灌注桩施工工艺,文章以某铁路特大桥的桩基施工为研究对象,通过采用旋挖钻和基于气举反循环原理的泥浆反循环系统,借助工程实践效果及水质监测仪进行成果分析,开展了环境敏感区深水斜岩桩基旋挖钻钻进施工及泥浆孔内循环系统的研究。结果表明,以上方法可以有效地保障深水斜岩河床地质条件下的桩基施工质量,减少对环境的影响。

In order to ensure the quality and protect the environment of pile foundation construction of bridge engineering under the geological conditions of deep-water inclined rock riverbed in environmentally sensitive areas,and to optimize the construction technology of bored piles reasonably,this paper takes the pile foundation construction of a railway bridge as the research object.Through the use of rotary drilling and mud reverse circulation system based on the principle of air lift reverse circulation,the results are analyzed by means of engineering practice effect and water quality monitor,and the research on rotary drilling construction and mud hole circulation system of deep-water inclined rock pile foundation in environmentally sensitive areas is carried out.The results show that the above methods can effectively guarantee the construction quality of pile foundation under the geological conditions of deep-water inclined rock riverbed and reduce the impact on the environment.