复杂地层条件下大直径超深工作井施工技术研究——以合肥市畅通二环樊洼路节点排水箱涵改建工程为例

Research on Construction Technology of Large-diameter and Ultra-deep Working Wells under Complex Formation Conditions——Taking the Drainage Box and Culvert Reconstruction Project of Fanwa Road Node of Changtong Second Ring Road in Hefei City as an Example

文章主要结合合肥市畅通二环樊洼路节点排水箱涵改建工程施工案例,介绍了复杂地层条件下大直径超深工作井施工技术。对于复杂地质条件下大直径超深工作井,采用沉井+护壁并结合静态破碎的施工方法,最终取得了不错的经济、环保效益,研究成果可为类似工程提供参考。

This paper mainly introduces the construction technology of large-diameter and ultra-deep working well under complex formation conditions based on the construction case of the drainage box and culvert reconstruction project of Fanwa Road node of Changtong Second Ring Road in Hefei City. For large-diameter and ultra-deep working wells under complex geological conditions, the construction method of caisson + retaining wall combined with static crushing is adopted, and good economic and environmental benefits are finally achieved. The research results can provide references for similar projects.