海滩养护的功效和寿命——以北戴河海滩养护工程为例  

BEIDAIHE BEACH NOURISHMENT:A CASE STUDY OF BEACH NOURISHMENT PROJECT IN BEIDAIHE

作　　者：邱若峰[1] 庄振业[2] 赵友鹏 刘冀闽[1] 

机构地区：[1]河北省地矿局秦皇岛矿产水文工程地质大队,河北秦皇岛066001 [2]中国海洋大学海洋地球科学学院,青岛266100

出　　处：《海洋地质前沿》2014年第3期26-33,共8页Marine Geology Frontiers

基　　金：河北省科学技术研究与发展计划(11276709D);北戴河海滩恢复治理工程后评价体系研究(2013997002)

摘　　要：以北戴河海滩养护工程作为实例，通过养滩前后3年的监测剖面数据，不仅计算了干滩宽度、中潮滩宽度、低潮滩宽度与单宽蚀淤量4个主要参数变量，分析了海滩剖面形态的演化特征，而且还计算了养护海滩效率系数和保存系数，结果显示：近3年来北戴河养护海滩干滩、中潮滩、低潮滩效率系数分别为5．37、2．88、1．47，保存系数分别为1．01、0．67、0．75。初步总结了北戴河养护海滩的短期功效，其中西海滩养滩寿命为10～12a，延长养滩工程寿命包括养滩砂岸的长度，平面护岸体系，抛沙方量和破波高度等因素。Taking the beach nourishment project of Beidaihe as a case, the width of the dries and medium and low tidal flats and the unit deposition-erosion rate were calculated with the profile monitoring data of three years before and after the nourishment, and the evolution of beach profile shapes analyzed. Efficiency coefficient and preservation coefficient of beach nourishment were calculated. The efficiency coefficient of the dries, medium and low tidal flats of beach nourishment in Beidaihe were 5.37, 2.88 and 1.47, and the preservation coefficient were 1.01, 0.67, 0.75 respectively in the past 3 years. In this paper, we summarized the preliminary effects of beach nourishment in Beidaihe, and discussed controlling factors. The lifetime of the nourishment in Western Beach is about 10-12 years, the factors which influence the nourishment life include the length of nourishment beach, spatial bank protection system, volume of sand replacement and height of breaking wave.

关 键 词：海滩养护 养滩寿命 效率系数 控制因素 北戴河 

分 类 号：P737.1[天文地球—海洋地质]