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首页> 外文期刊>Journal of porous media >VARIATION OF SEEPAGE IN ONE-DIMENSIONAL LOW-PERMEABLE LAYER UNDER LOW-FREQUENCY VIBRATION
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VARIATION OF SEEPAGE IN ONE-DIMENSIONAL LOW-PERMEABLE LAYER UNDER LOW-FREQUENCY VIBRATION

机译：低频振动下一维低渗层渗流的变化

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摘要

A horizontal external load was imposed on deep soil in seismic production technology. The direction of the external load was different from the typical vertical load used in general consolidation problems. A low-frequency vibration wave was required to propagate along the directions of fluid flow and soil spreading. A numerical simulation was conducted to study the influence of horizontal low-frequency vibration in seismic production technology on the seepage in a low-permeability layer. A one-dimensional physical model with specific conditions for calculation was introduced. The external vibration was set at the injection side. When the initial seepage field was coupled with wave-induced Biot flow, a periodical variation and numerical increase of petrophysical properties were observed through numerical simulation. The simulation was revealed to be reasonable, in contrast with the experimental rules of permeability versus vibration parameters. The results showed that the coupled seepage was different from both wave-induced flow and initial flow. The maximum increase ratios of properties such as flow rate and pore pressure were obviously influenced by initial permeability, porosity, and fluid viscosity. The empirical formula linking the vibration parameter and variation of physical property might guide the cognition to the mechanism of seismic production technology.
机译：地震生产技术的深层土壤施加了水平外部负荷。外部负载的方向与一般整合问题中使用的典型垂直载荷不同。需要低频振动波沿流体流动和土壤扩散的方向传播。进行了数值模拟，研究了水平低频振动在低渗透层中渗流的影响。介绍了具有特定计算条件的一​​维物理模型。在注射侧设定外部振动。当初始渗流场与波诱导的生物流动耦合时，通过数值模拟观察到岩石物理性质的周期性变化和数值增加。与渗透率与振动参数的实验规则相比，模拟是合理的。结果表明，耦合的渗流与波引起的流动和初始流量不同。最大增加的性质比率和孔隙压力比初始渗透率，孔隙率和流体粘度明显影响。将振动参数的经验公式和物理性质的变异可以指导对地震生产技术机制的认识。

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