Depressurization is an effective method to produce methane gas from methane hydrate reservoirs. However, during gas production, sediments consolidate due to increasing effective stress. Revealing the compressive characteristics of methane hydrate-bearing sands during consolidation is essential for an accurate understanding of sediment properties and for the development of a constitutive model. Therefore, a series of isotropic consolidation tests was performed on sand in which methane hydrate was artificially generated, and its compressibility characteristics were evaluated. Furthermore, to assess prolonged production, creep compressive behavior was investigated. The experimental results showed volumetric strain due to increasing confining stress decreased with increasing initial methane hydrate saturation. Particle crushing during consolidation was inhibited by the presence of methane hydrate. It was confirmed that the increase in the effects of methane hydrate on soil compressibility followed a power function with the increase in methane hydrate saturation. Creep deformation was observed during the stress holding period regardless of the presence of methane hydrate. Creep behavior during the stress holding period was related to the extent to which the creep component had dissipated before the stress holding period in the past. A theoretical concept for creep strain was proposed based on the experimental results.

降压是从甲烷水合物储层生产甲烷气的有效方法。但是，在天然气生产过程中，由于有效应力的增加，沉积物会固结。揭示固结过程中含甲烷水合物砂的压缩特征对于准确了解沉积物特性和建立本构模型至关重要。因此，在人工产生甲烷水合物的砂土上进行了一系列各向同性固结试验，并评估了其可压缩性。此外，为了评估延长的生产时间，对蠕变压缩行为进行了研究。实验结果表明，随着围压的增加，体积应变随着初始甲烷水合物饱和度的增加而减小。甲烷水合物的存在抑制了固结过程中的颗粒破碎。可以确定的是，甲烷水合物对土壤可压缩性的影响随幂函数随甲烷水合物饱和度的增加而增加。无论是否存在甲烷水合物，在应力保持期间均会观察到蠕变变形。应力保持期的蠕变行为与过去的应力保持期之前蠕变分量的消散程度有关。根据实验结果提出了蠕变应变的理论概念。无论是否存在甲烷水合物，在应力保持期间均会观察到蠕变变形。应力保持期的蠕变行为与过去的应力保持期之前蠕变分量的消散程度有关。根据实验结果提出了蠕变应变的理论概念。无论是否存在甲烷水合物，在应力保持期间均会观察到蠕变变形。应力保持期的蠕变行为与过去的应力保持期之前蠕变分量的消散程度有关。根据实验结果提出了蠕变应变的理论概念。