考虑到全断面硬岩推进机(TBM)掘进过程中轴向基础振动对流体流速和压力波动的影响，运用输流管道流固耦合轴向运动4-方程模型，分析基础振动的影响，建立轴向基础振动下的TBM液压管道轴向耦合振动方程组，并用直接解法在频域内对其进行求解，再运用MATLAB软件对管道出口处流速和压力的频域响应特性进行仿真计算，随之分析基础振动和不同结构参数对流体频域响应的影响规律。同时，为减弱基础振动对流体出口参数的影响，运用正交实验法对管道进行结构优化，优化后的管道系统流速的频域幅值整体上减小了48.61%，从而在一定程度上抑制了因基础振动带来的流体波动。%The influence of the axial foundation vibration on the fluid flow velocity and the pressure fluctuation in TBM tunneling process was studied. Using the 4-equation model of the liquid-solid coupled axial motion and considering the effect of the foundation vibration, the axial coupling vibration equation for the TBM hydraulic pipeline was established. The equation was then solved directly in frequency domain. Meanwhile, the frequency responses of velocity and pressure at the pipe outlet were simulated using Matlab code. Then, the influence of foundation vibration and structural parameters changes of the pipeline on the frequency response of the fluid was studied. In order to reduce the influence of the axial foun-dation vibration on fluid fluctuation, the orthogonal experiment method was applied to optimize the pipeline structure. Re-sult of the optimization shows that the amplitude of fluid velocity is reduced by 48.61%in the frequency domain, and the fluid fluctuation resulted from the axial foundation vibration is suppressed.
展开▼
