During instalation of a large dock s door and blast construction of channelshallow, the self-made air-power silt collector was used to clear the crushed stones, bricks andsilt at sea bottom, based on which, the dock door installation and channel shallow treatmentwere carried out smoothly and successfully.

In the wharf steel pipe pile foundation construction of Yangshan Deepwater Port, reversed mud-suction method was applied to suck the mud inside the pile out of the pipe pile and then cast concrete to improve the bearing capacity of the foundation pile.