惠州LNG码头工程西护岸波浪断面物理模型试验研究

Physical model test on the west revetment section of a coastal project in Huizhou

港口海岸工程中,当护岸后方的防浪要求提高时,合理利用原有护岸进行加固与改造更为经济。针对惠州某LNG码头工程西护岸的斜坡式结构进行物理模型断面试验,通过在已有断面结构后方增设新防浪墙,使其在满足稳定性与越浪要求的同时兼顾使用场地的集约性,为护岸设计提供了科学依据。结果表明:在100 a一遇高水位与100 a一遇波浪要素组合条件下,将贴近前防浪墙的4排3 t扭王字块换为5 t扭王字块后,护岸可以同时满足稳定性与越浪要求。同时,通过缩短前后防浪墙的间距直至5 m时,断面依然满足越浪与排水要求,该方案节省了后方陆域使用面积。

In the field of port and coastal engineering,it is cost-effective and convenient to take fully advantage of the existing revetment for reinforcement and reconstruction when the demand for wave overtopping prevention intensifies.A series of physical model section tests were carried out for the rubble-mound structure of the western revetment in an LNG terminal project located in Huizhou.To maximize the utilization of the existing structure,a new crown wall was added behind it to ensure stability,manage wave overtopping,and minimize land usage,which provides a scientific basis for the design.The test results indicate that under the combination of a 100-year return period high water level and wave height,the revetments can meet the requirements of stability and overtopping at the same time by replacing the four rows of 3 t blocks near the front wave wall with 5 t blocks.At the same time,when the distance between the front and rear wave walls is shortened to 5 m,the cross section still meets the requirements of wave overtopping,and the rear land area is saved.