Understanding dynamic mechanical properties of hydrate reservoirs is essential for ensuring safety and economic hydrate production. The modulus, damping ratio, and Poisson's ratio are critical parameters in interpreting seismic surveys and well logging data and the stability prediction of hydrate reservoirs during production or under earthquake conditions. In this paper, the shear and Young's moduli and damping ratios were evaluated by conducting resonant column tests on the synthetic hydrate-bearing specimens with respect to hydrate saturation, stress state, strain range, void ratio, pore pressure, and stress history. Regardless of the test conditions, a distinct increase in the damping ratio with an increase in the modulus of hydrate-bearing specimens could be used to identify the hydrate occurrence. The stress and hydrate improve the modulus of hydrate-bearing specimens; however, the exponent enhancement of stress on the modulus of hydrate-bearing specimens is suppressed by high hydrate saturation. In addition, a rapid nonlinear decrease in the normalized modulus of hydrate-bearing specimens with high hydrate saturation occurred under identical strain increments, and the corresponding damping ratio also increased rapidly. Along with the modulus data of other synthetic and natural hydrate-bearing specimens determined using various methods, a definite exponential relationship between E_h = E₀ ∗ e^n∗S_h and different parameter settings was established to satisfy various application conditions. In contrast, the Poisson's ratio of hydrate-bearing sediments should be determined with caution because of its relationship with specimen deformation or damage.

了解水合物储层的动态力学特性对于确保安全和经济的水合物生产至关重要。模量、阻尼比和泊松比是解释地震调查和测井数据以及生产期间或地震条件下水合物储层稳定性预测的关键参数。在本文中，通过对含水合物的合成试样进行共振柱试验，从水合物饱和度、应力状态、应变范围、孔隙比、孔隙压力和应力历史等方面评估剪切和杨氏模量和阻尼比。无论试验条件如何，随着含水合物试样模量的增加，阻尼比的明显增加可用于识别水合物的存在。应力和水合物提高了含水合物试样的模量；然而，高水合物饱和度抑制了应力对含水合物试样模量的指数增强。此外，在相同应变增量下，水合物饱和度高的含水合物试样的归一化模量发生快速非线性下降，相应的阻尼比也迅速增加。连同使用各种方法确定的其他合成和天然含水合物样品的模量数据，在相同的应变增量下，具有高水合物饱和度的含水合物试样的归一化模量发生快速非线性下降，相应的阻尼比也迅速增加。连同使用各种方法确定的其他合成和天然含水合物样品的模量数据，在相同的应变增量下，具有高水合物饱和度的含水合物试样的归一化模量发生快速非线性下降，相应的阻尼比也迅速增加。连同使用各种方法确定的其他合成和天然含水合物样品的模量数据，E _h  =  E ₀  ∗  e ^{n ∗ S _h}并建立了不同的参数设置以满足各种应用条件。相比之下，含水合物沉积物的泊松比应谨慎确定，因为它与样品变形或损坏有关。