摘要
针对全断面硬岩掘进机(TBM)掘进过程中强振动对液压阀块内部流道的影响,建立了基础振动下U型、Z型、V型3种典型流道的流场仿真模型,并通过实验验证了仿真模型的正确性.仿真分析了振动方向和强度对典型流道压降特性的影响规律.研究发现:基础振动下液压阀块流道的压降随时间做周期性波动,压降的波动幅值和平均值随着振动强度的增大而增大;在阀块内布置流道时,U型流道应避免Y方向的振动,Z型流道应避免X方向的振动,V型流道应避免Z方向的振动.研究结果能为基础振动下液压阀块结构的设计提供理论依据.
In view of the impact of strong vibration on the internal flow channels in hydraulic valve blocks during the tunneling process of tunnel boring machines( TBM),the flow field simulation models of three typical flow channels of U-shape,Z-shape,V-shape under foundation vibration are constructed,and they are validated by experiments. Then,the influences of the vibration direction and intensity on the pressure drop characteristics of the typical flow channels are analyzed by simulations. The results indicate that the pressure drop of the flow channels in the hydraulic valve blocks under the foundation vibration fluctuates periodically with time,the fluctuation amplitude and mean value of the pressure drop increase with the amplification of the vibration intensity,and that,when the flow channels are placed in the hydraulic valve blocks,the vibration in the Y direction should be avoided in the Ushaped flow channel,the vibration in the X direction should be avoided in the Z-shaped flow channel,and the vibration in the Z direction should be avoided in the V-shaped flow channel. The conclusions can provide a theoretical basis for the structural design of hydraulic valve blocks under foundation vibration.
作者
张怀亮
彭玲
周井行
ZHANG Huai-Uang;PENG Ling;ZHOU Jing-xing(College of Mechanical and Electrical Engineering#State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, Hunan, China)
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第9期34-39,66,共7页
Journal of South China University of Technology(Natural Science Edition)
基金
国家重点基础研究发展计划(973计划)项目(2013CB035400)~~
关键词
全断面硬岩掘进机
阀块流道
振动方向
振动强度
压降特性
tunnel boring machine
valve channel
vibration direction
vibration intensity
pressure drop characteristic
