沿海城市防洪工程水下钻孔灌注桩的质量控制要点浅析

Brief Analysis on Flood Control Project of Quality Control of Underwater Piles Bored Piles in Coastal City

近年来,我国沿海地区防洪能力逐渐得到加强,而防洪工程所处场地基础较差,根本无法满足防洪工程的要求,在这种天然地基上建造防洪堤,若处理不好,就可能发生局部破坏甚至整体滑动等失稳现象。结合浙江瑞安城市防洪堤三期工程,浅析在沿海地区复杂地质环境中进行水下钻孔灌注桩作业的施工要点及加强施工中质量控制的有效手段,提出保证成桩质量的措施,为类似工程地质条件钻孔灌注桩水下施工提供参考。

In recent years , flood control capacity has been strengthened gradually in coastal areas , ground basis on the flood control engineering is poor , which could not meet the requirements of flood control engineering.If the processes are not good to build a levee on the natural foundation , local damage and even whole sliding instability phenomenon may occur.Combined with the levee in phaseⅢproject in zhejiang ruian city , the key points of construction of underwater piles bored piles and ef-fective methods for quality control during construction are analyzed in complex geological environment of coastal city , and measures to ensure the piles quality are put forward , which can provide the refer-ence for the similar engineering geological conditions of underwater piles bored piles construction.