The present technique is a new thin cutoff wallconstruction method by modifying the original method as to use flat drill bit instead of cross bit and adopt positive and negative circulating system.
It is essential to control assembly and welding deformations for large scale spheral tank with thinwall in order to guarantee spheral tank construction quality.
It briefly introduces the construction method for the main works of thinwall large cylinder breakwater engineering and summarizes some construction experience and matters needing attentions.