大型耙吸式挖泥船泥舱格栅设计与装舱溢流损失探讨

Discussion on hopper grating design and overflow loss of large TSHD

耙吸式挖泥船的施工效率与溢流损失强度密切相关,减少溢流损失是提高施工效率的重要措施。为了确定减小溢流损失对装舱效率的影响,分析溢流损失的影响因素,并重点研究泥浆流速的影响,得出泥浆流速与溢流损失之间的关系。同时结合大型耙吸式挖泥船新海虎8轮的设备性能和实际施工经验,对常见的装舱系统消能方式进行分析,提出采用泥舱格栅的消能方式。通过理论分析,确定泥舱格栅设计与溢流损失之间的关系,采用此方式能有效减少溢流损失,提高装舱效率。为大型耙吸挖泥船泥舱装载系统设计提供参考。

Trailing suction hopper dredger＇s construction efficiency is closely relate to the intensity of the overflow loss, soreducing overflow loss is an important measure to improve the construction efficiency of TSHD. In order to reduce the influenceof the overflow loss of the suction dredger on the efficiency of the loading, we analyze the various influence factors of theoverflow loss, focused on the influence of the rate of mud, and determined the relationship between the rate of mud and theoverflow loss. At the same time, we combined with the equipment performance of large-scale TSHD Xinhaihu 8 and the actualconstruction experience, analyzed the energy dissipation of the common loading system, and proposed the method of dissipationof the mud-cabin grille. Through the theoretical analysis to determine the relationship between the spoil hopper＇s grille designand the overflow loss, which can effectively reduce the overflow loss and improve the efficiency of the installation. It provides areference for the design of large-scale TSHD spoil hopper loading system.