Application of riprap tamping equipment energy saving technology in the Hongkong-Zhuhai-Macao Bridge

The Hongkong-Zhuhai-Macao Bridge immersed tube tunnel engineering needs to throw fill the underwater tunnel joint grooves with 10 kg to100 kg of stone, and through the underwater ram flat to increase the compactness of bedding,improving the bearing capacity of immersed tube foundation, and then paving the rubble cushion and sinking and jointing the immersed tube. We introduced the operation principle and energy saving technology of riprap tamping equipment, which can provide references for similar deep seabed foundation treatment projects.