pressure-wave propagation

Hydrologic prospecting, well testing based on the principle of pressure-wave propagation, is an important method for the study of oil field performance.

油气层水文勘探法是根据压力波进行试井，研究油田动态的一种重要方法。

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Study of Propagation Pattern of Pressure Waves Produced by Magnetically Levitated Train Passing a Tunnel

磁悬浮列车穿越隧道引起的压力波传播规律研究

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According to the Newton's second law of motion, the law of conservation of mass, and Bingham plastic flow equation of slurry, as well as under top cement pulsation, the mathematical models of one dimensional pressure pulse propagation downwards in the cement column was established.

文中根据牛顿定律、质量守恒定律及水泥浆的宾汉塑性流变性，在顶部水泥脉冲振动作用下，建立了水泥浆中，一维压力传播的波动方程的数学模型。

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The modified tensile stress crack propagation criterion and influence of cranny hydraulic pressure on crack propagation

修正的拉应力裂纹扩展准则及裂隙水压对裂纹扩展的影响

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This method takes full advantage of the low tensile strength of rock and high permeating ability of high pressure water which enable the initiation and propagation of cracks and the accomplishment of rock fragmentation.

本方法充分运用了岩石抗拉强度低，和高压水对岩石有利渗透作用的条件，从而达到岩石裂纹的产生与扩展，直到最后劈裂。

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And the analysis of the test data is as following: ① Influence of concentration impacting on peak pressure is analyzed. And peak pressure has a cubic function with propagation distance with same test point distance.

分析试验数据认为：①浓度的改变对压力峰值的影响是比较大的，当测点距离一定时，压力峰值与浓度成二次函数关系。

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