“新海牛”轮挖掘硬质黏土高压冲水耙头系统研制  

Development of high-pressure flushing drag head system for hard clay excavation of“Xinhainiu”trailing suction hopper dredger

作　　者：郑金龙 石启正 陈旭 尹纪富 方华 王新宇 范佳欣 ZHENG Jin-long;SHI Qi-zheng;CHEN Xu;YIN Ji-fu;FANG Hua;WANG Xin-yu;FAN Jia-xin(CHEC Dredging Co.,Ltd.,Shanghai 200136,China;CCCC National Engineering Research Center of Dredging Technology and Equipment Co.,Ltd.,Shanghai 201208,China)

机构地区：[1]中港疏浚有限公司,上海200136 [2]中交疏浚技术装备国家工程研究中心有限公司,上海201208

出　　处：《水运工程》2021年第11期218-222,共5页Port & Waterway Engineering

摘　　要：针对挖掘硬黏土时耙头堵塞、破土能力弱等问题,对比硬质黏土与长江口土质性能,得知硬质黏土具有凝聚力大、颗粒细、抗剪强度大等特点。结合数值模拟技术,采用超高压射流技术,研制一套具有自主知识产权的高效挖掘硬质黏土耙头系统(最大压力为38 MPa)。该系统采用“高压头、低排量”的模式,减少挖掘阻力,缓解堵耙问题,增加破土能力,为航道疏浚工程提供了技术保障。In view of the problems such as the blockage of drag head and weak ability of breaking soil when excavating hard clay,we compare the properties of hard clay and soil in the Yangtze River and find that the hard clay has the characteristics of large cohesion,fine particles and high shear strength.Based on the numerical simulation and adopting the technology of ultra-high pressure jet to solve the above problems,we develop a set of efficient excavating hard clay drag head system with independent intellectual property rights(with the maximum pressure of 38 MPa),which adopts the mode of"high-pressure head,low flow"to reduce the excavation resistance,alleviate the problem of rake blocking,and increase the soil breaking capacity,to provide a technical support for channel dredging projects.

关 键 词：耙吸挖泥船 硬质黏土 耙头系统 智能化 

分 类 号：U674.31[交通运输工程—船舶及航道工程]