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油气的运移、聚集与地下水动力场的形成与演化密切相关.随着沉积盆地的形成与演化,地下水动力场也有形成、发展和消亡的过程.讨论鄂尔多斯盆地地下水动力场的形成与演化,推断其油气的分布规律:大气水下渗——向心流处为水区,天然气离心流区为气区,越流天然气漏失区对应于气水共存过渡区. 相似文献
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The inflation mechanism is examined for a composite cylindrical tube composed of two incompressible rubber materials, and
the inner surface of the tube is subjected to a suddenly applied radial pressure. The mathematical model of the problem is
formulated, and the corresponding governing equation is reduced to a second-order ordinary differential equation by means
of the incompressible condition of the material, the boundary conditions, and the continuity conditions of the radial displacement
and the radial stress of the cylindrical tube. Moreover, the first integral of the equation is obtained. The qualitative analyses
of static inflation and dynamic inflation of the tube are presented. Particularly, the effects of material parameters, structure
parameters, and the radial pressure on radial inflation and nonlinearly periodic oscillation of the tube are discussed by
combining numerical examples. 相似文献
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