【摘要】 针对管道内检测器(包括输油和输气管道)通过盾构井时运行状态,建立了理想输气管道内检测器突然转向无限长竖直管段物理模型。基于简单波理论对该物理模型的运动状态进行了研究,并采用有限体积法进行了波动影响区的验证。分析结果表明:检测器在突然转向无限长竖直管段后会失去平衡,开始一段加速度逐渐减小的加速运动,但很快有达到另一种平衡态。更多还原

【Abstract】 The physical model of detector in ideal gas pipeline turning suddenly to infinite vertical pipeline has been build in this paper to simulate the motion state of the in-pipe detector(including oil and gas pipeline) moving through the shield shaft. Research on motion state of this physical model based on the simple waves and the test of fluctuation affected zone based on the finite volume method have been achieved. Results show that the detector will lose balance when turning abruptly to the infinite vertical pipeline and will reach equilibrium soon through a length of acceleration movement in which the accelerated speed diminishing.更多还原