The water-stop sealing system for the final joint of the Shenzhong-Zhongshan Link is composed of an M-typed waterstop and an inflatable waterstop.One end of the M-typed waterstop is installed in the expansion section and the other end is installed in the push-out section.Due to the huge volume of the M-typed waterstop and the complexity of the actual working conditions on site,the final joint M-typed waterstop reduced-scale watertight push-pull test was conducted.The reduced-scale test of M-typed waterstop is divided into watertight test and push-pull test,and the push-pull test tooling is transformed from the watertight test tooling.The two tests can intuitively observe the water pressure bearing condition of the M-typed waterstop and the change state of the M-typed waterstop after pushing and pulling on the land,and the two tests respectively verify the watertight performance and telescopic elastic performance of the M-typed waterstop in practical application,and relevant measures can be formulated in combination with the test conditions,which effectively avoids sudden problems in practical application.
steel shell immersed tunnelpush-pull final jointstunnel waterproofM-typed waterstopreduced-scale test
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