摘要
为研究大直径泥水盾构机泥浆管路的流量、压力分布,采用Simcenter Flomaster软件对泥水盾构机泥浆管路进行仿真计算,建立一维泥水盾构机泥浆管路模型,并通过改变阀门开度、流体密度及泵的转速,记录管路流量及压力分布情况,从而得到最佳流量分配。模拟计算结果表明:阀门开度、流体密度和泵的转速对泥浆管路系统流量、压力分布具有一定影响;阀门开度增大时,管路流量增加,泵两端压力差减少;流体由清水变为泥浆时,管路流量增加,泵两端压力差增加;泵转速降低时,管路流量减少,泵两端压力差减少;排浆泵转速过低时,可通过增大排浆泵转速或串联1台泵来保证排浆管路正常工作。
To study the distribution of flow and pressure in the slurry pipeline of large-diameter slurry shield,Simcenter Flomaster was used to simulate the slurry pipe for calculation,and a one-dimensional model was established for the slurry pipe of large-diameter slurry shield.The distribution of flow and pressure in the pipeline under different working conditions by changing the valve opening degree,fluid density and rotating rate of pump were recorded,so as to obtain the optimal flow distribution.The calculation results show that valve opening degree,fluid density and rotating rate of pump all have a certain influence on the distribution of flow and pressure in the slurry pipeline system.By increasing valve opening degree,the flow rate in the pipeline increases and the pressure difference between two ends of the pump is reduced;as the fluid is changed from clear water to slurry,the flow rate in the pipeline increases and the pressure difference between two ends of the pump decreases;as the pump rotates at a lower rate,both the flow rate and the pressure difference are reduced.If the rotating rate of discharging pump is too low,the discharging pipe can be kept operating normally by increasing the rotating rate of the discharging pump or adding another pump in series.
作者
徐梁
王海涛
孙九春
贾浩
宿向辉
奚晓广
XU Liang;WANG Haitao;SUN Jiuchun;JIA Hao;SU Xianghui;XI Xiaoguang(National and Local Joint Laboratory of Fluid Transfer Technology,Zhejiang Sci-Tech University,Hangzhou 310018,Zhejiang,China;Tengda Construction Group Co.,Ltd.,Shanghai 200122,China)
出处
《矿冶工程》
CAS
北大核心
2024年第6期16-22,共7页
Mining and Metallurgical Engineering
基金
浙江省重点研发计划(2022C01168)。
关键词
隧道施工
刀盘结泥饼
管道堵塞
大直径隧道
泥水盾构机
管道输送
泥浆管路
流动特性
阀门开度
泵输送
管路系统
tunnel construction
cutting head clogging
clogging of pipe
large diameter tunnel
slurry shield
pipeline transportation
slurry pipeline
flow characteristics
valve opening degree
pump transportation
pipeline system
