岩石水力输送的管阻特性和阻力模型修正  

Pipe resistance characteristics and resistance model modification of hydraulic transportation for rock

作　　者：秦斌 李金峰[1] 秦亮[1] 田桂平 QIN Bin;LI Jin-feng;QIN Liang;TIAN Gui-ping(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》2022年第6期221-225,231,共6页Port & Waterway Engineering

摘　　要：岩石破碎后在排泥管线内的运动状态、管阻特性与其他土质有较大区别,岩石输送的阻力损失机理复杂,因而针对岩石输送,目前在疏浚领域内缺乏通用性的计算模型。对固体颗粒运动状态及阻力损失特性、阻力模型基本理论进行论述,对Durand经典阻力模型的特点和适用性进行分析,并基于“天鲲号”在大连大窑湾和俄罗斯某岩石疏浚工程中的输送数据,对Durand模型进行修正计算,得出杜兰德系数K_(D)的修正值。结果表明,管阻计算精度得到较大提高,使得模型的适用范围扩展至粒径100 mm以内的岩石土质。The movement state and pipe resistance characteristics of broken rock in the discharge pipeline are quite different from other soil properties,and the resistance loss mechanism of rock transportation is complex.Therefore,there is a lack of universal calculation model for rock transportation in the field of dredging.We discuss the motion state of solid particles,the characteristics of resistance loss and the basic theory of resistance model,and analyze the characteristics and applicability of Durand classic resistance model.Based on the transportation data of “Tiankunhao” in Dayaowan,Dalian and a rock dredging project in Russia,we modify and calculate the Durand model,and obtain the modified value of Durand coefficient K_(D).The results show that the accuracy of pipe resistance calculation is greatly improved,so that the application scope of the model is extended to the rock with particle size less than 100 mm.

关 键 词：岩石 水力输送 阻力损失 

分 类 号：U616[交通运输工程—船舶及航道工程]