通过借助国家“八五”重点科技攻关成果“ SDM－ 2型含沙量快速测量系统”，对耙吸挖泥船溢流泥浆密度进行现场测定，然后根据溢流过程中溢出泥浆的流量来计算溢流土方量的途径，为日后长江口深水航道维护及其他疏浚工程的溢流土方计算提供合理的依据和方法。 Through the on-site determination of overflow slurry density of trailing suction hopper dredger with the help of “SDM-2 Sediment Rapid Measurement System”, a key science and technology achievement of the national “Eighth Five-Year Plan” period, and then calculated according to the overflow flow of mud during overflow The method of overflow earthwork provides a reasonable basis and method for the calculation of overflow earthwork for the maintenance of the deep-water channel in the Yangtze Estuary and other dredging projects in the future.