挖岩绞刀的岩石切削试验及数值模拟  

Cutting test and numerical simulation of rock cutter

作　　者：苏召斌 林森 杨晨 SU Zhaobin;LIN Sen;YANG Chen(CCCC Tianjin Dredging Co.,Ltd.,Tianjin 300461,China;Tianjin Key Laboratory for Dredging Engineering Enterprises,Tianjin 300457,China)

机构地区：[1]中交天津航道局有限公司,天津300461 [2]天津市疏浚工程技术企业重点实验室,天津300457

出　　处：《水运工程》2024年第3期189-193,共5页Port & Waterway Engineering

基　　金：中国交通建设股份有限公司科技研发项目(2023-ZJKJ-10);中交天津航道局有限公司科技研发项目(THJ-KJRW(2021)010)。

摘　　要：绞刀是绞吸挖泥船的核心部件,通过现场试验研究绞刀挖掘性能的代价巨大。针对在实船试验中难以遇到合适土质的问题,提出在实验室进行挖掘试验和数值模拟表征绞刀挖掘性能的方法。制作2000 kW功率绞刀的缩比模型和不同单轴抗压强度的岩石模型,在实验室进行不同切削厚度、步进距离等参数的绞刀切削岩石的模型试验,建立1:1尺寸的绞刀数值模型和岩石模型,采用单元删除法模拟2000 kW绞刀切削岩石的过程,分别模拟产量为240和500 m3/h的切削过程,并分析绞刀切削功率和横移拉力。结果表明,挖掘产量240 m3/h时的最大功率为1884 kW、平均功率为1088 kW,满足设计要求。Cutter is a core component of cutter suction dredger,and it is very expensive to study the excavation performance of cutter through field test.To solve the problem of meeting the suitable soil quality in the real ship test difficultly,a method to characterize the excavation performance of the cutter by excavation test and numerical simulation in the laboratory is proposed.Scale model of 2000 kW power cutter and rock model with different uniaxial compressive strength are made.Model tests of cutter cutting rock with different cutting thickness and stepping distance are carried out in the laboratory,and 11 scale cutter numerical model and rock model are established.The cutting process of 2000 kW cutter is simulated by unit deletion method,and the cutting processes with output of 240 m 3 h and 500 m 3 h are simulated respectively,and the cutting power and the cutting power of cutter are analyzed.The results show that when the excavation output is 240 m 3 h,the maximum power is 1884 kW and the average power is 1088 kW,which meets the design requirements.

关 键 词：疏浚 绞刀 岩石切削 数值模拟 

分 类 号：U616[交通运输工程—船舶及航道工程]