【Project Overview】 Located in the Diaolang Reclamation Area between Langxi Mountain of Baiquan Town, and Diao Mountain of Beichan Town, in the north of Dinghai District, Zhoushan City, this project covered an area of 7,392 mus. Hydraulic mud/sand filling and soil/rock backfilling technology were applied to this project based on area difference, including an earth volume of 3.6 million m³, sand volume of 15.1 million m³, earth/rock volume of 2.03 million m³  for road construction, and backfilled waste slag volume of 2.61 million m³. The total investment of this project totaled RMB 725 million. Shanghai Darun Port Construction Group Co., Ltd. performed hydraulic sand filling of this project.