Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference
Shanghai, China, June 5–10, 2022
Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE)
ISBN 978-1-880653-81-4; ISSN 1098-6189

www.isope.org

Experimental Study on High-Precision Layered Hydraulic Reclamation in Deep Water
Panpan Li, Hui Sun, Qinze Chen, Yuchi Hao*
CCCC National Engineering Research Center of Dredging Technology and Equipment Co. Ltd.
Shanghai, China

analyzed the deformation characteristics such as settlement anddisplacement of steel cylinder during the construction of artificialisland. Lai, Zheng, Li and Liu (2016) focused on the dynamic stabilityof artificial island triggered by self-weight, seepage and earthquake.
Lloret, Hicks and Wong (2012) studied and analyzed the soil
characteristics of filled artificial island by considering the heterogeneityof geotechnical materials. Wang, Wang, Yuan, Duan and Liu (2021)
carried out the experimental study on liquefaction resistance of
hydraulic fill coralline soils at artificial islands based on large-scale
dynamic triaxial apparatus. In view of the hydraulic reclamation in
deep open water during the construction of the filled artificial island,
the traditional construction method of direct hydraulic reclamation has
some engineering problems such as poor control accuracy and low
planeness of hydraulic reclamation. However, the current research isstill lack of relevant discussion to solve the problem of precision andplaneness in hydraulic reclamation construction. Therefore, it is urgent
to carry out further research on high-precision layered hydraulicreclamation technology.

ABSTRACT
In view of the hydraulic reclamation in deep open water during theconstruction of the filled artificial island, the traditional construction
method of direct hydraulic reclamation has some engineering problems
such as poor control accuracy and low planeness of hydraulicreclamation. In this paper, the experimental study on high-precision
layered hydraulic reclamation in deep open water is carried out. The
study shows that the layered hydraulic reclamation technology has highcontrol accuracy and great planeness of hydraulic reclamation, which
can reduce the average allowable deviation of layered hydraulicreclamation by about 14.7% based on the current specification in China.

KEY WORDS: Deep open water; the filled artificial island; highprecision layered hydraulic reclamation; planeness.

INTRODUCTION
The construction of the filled artificial island can effectively solve thecontradictions between land supply and demand of some countries
along the Belt and the Road, which has obvious economic and social
benefits. With the promotion of the projects of the Belt and the Road,
the construction of the filled artificial island is facing the challenges of
new special conditions, such as large water depth in construction areaand limited construction materials.

In this paper, based on the project of PASAY filled artificial island in
Manila Bay, the Philippines, the method of physical model test is used.
In addition, the typical paving pipe head of the existing sand barge isadopted as the prototype, and then the experimental study on highprecision layered hydraulic reclamation in deep open water is carriedout. In the physical model test, the flow field distributions of the paving
pipe head under the condition of clean water with different inflow
velocity are explored, and the sediment layered accumulation form andthe planeness of hydraulic reclamation is observed with static anduniform slow movement of the paving pipe under the sedimentcondition. And then the average deviation of layered hydraulicreclamation is calculated and compared with the average allowabledeviation of the current specification in China. The results of the study
can provide several basis and technical supports for high-precision
hydraulic reclamation construction of filled artificial island in the deep
open water.

At present, the technical researches on the construction of filled
artificial island at home and abroad mostly focus on the general layout,
construction procedures, analysis of structure and soil properties, aswell as the impact on the marine environment. For example, Wang,Yan, Liu, Tong, Yu and Liang (2013) focused on analyzing the effects
of different layout schemes on the marine environment of the Dalianoffshore reclaimed airport island. Yan and Su (2010) combined withthe specific engineering case of a sight artificial island in Tianjin,focused on the feedback analysis method based on ABAQUS software
to guide the construction procedure of artificial island on soft soil
foundation. Bellendir, Finagenov and Glagovsky (2011) analyzed thestructural stability of artificial island designed for developing the gasfield. Based on the numerical analysis method, Kou, Liu and Hou (2013)

PHYSICAL MODEL TEST STUDY ON HIGH-PRECISIONLAYERED HYDRAULIC RECLAMATION IN DEEP OPENWATER1879