The new technology of integrated prefabricated underwater push type final joint is adopted by the Shenzhen-Zhongshan Link.In order to ensure that the post welding process is in a dry environment,an"M-typed waterstop+inflatable waterstop"is installed between the push out section and the expansion section as a temporary waterstop measure during the construction period of the post welding section.M-typed waterstop is the first and most important waterstop measure.The final joint M-typed waterstop of the Shenzhen-Zhongshan Link is currently the world's largest size waterstop,with high quality requirements for installation of waterstops.Therefore,a special tooling process installation method has been developed to solve the problem of installing super large and ultra wide waterstops,ensuring installation quality.Through on-site practice of the final joint of the Shenzhen-Zhongshan Link,this process can be referenced and applied in similar projects.
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