海洋地质与第四纪地质2023，Vol.43Issue(6)：217-225,9.DOI:10.16562/j.cnki.0256-1492.2022121901
压缩加载条件下含水合物沉积物蠕变特性分析
Analysis of creep characteristics of hydrate sediments under compressive loading
摘要
Abstract
Hydrate mining may induce submarine landslides or other engineering geological disasters.Long-term and stable gas production is required for any commercial exploitation for natural gas hydrate.Understanding the creep properties of hydrate-bearing sediments is importance for the estimation of long-term stratum instability.Therefore,we analyzed the creep characteristics of silty clay by using a serial test on consolidation drainage creep under compression loading conditions with hydrate reservoir silty clay as the test medium.The results show that the deformation curves of hydrate bearing sediments presented three stages:instantaneous deformation,consolidation deformation,and creep deformation.With the increase of load and hydrate saturation,the creep strain increased progressively.The modified Singh-Mitchell creep model was applied,by which the creep properties of hydrate bearing sediments were well predicted at different stress levels and hydrate saturations.关键词
水合物沉积物/蠕变/水合物饱和度/Singh-Mitchell蠕变模型Key words
hydrate-bearing sediments/creep/hydrate saturation/modified Singh-Mitchell creep model分类
海洋科学引用本文复制引用
李辉,张旭辉,陆程,谢鹏飞,鲁晓兵..压缩加载条件下含水合物沉积物蠕变特性分析[J].海洋地质与第四纪地质,2023,43(6):217-225,9.基金项目
国家自然科学基金"水合物分解引起浅层土层中气体喷发的机理研究"(11872365) （11872365）
