太原理工大学学报2026，Vol.57Issue(5)：947-955,9.DOI:10.16355/j.tyut.1007-9432.20240370
海底能源土-结构界面剪切试验研究
Shear Behavior of Seabed Energy Soil-Structure Interface
摘要
Abstract
[Purposes]During the extraction of seabed energy soil,a common issue is the reduc‑tion in cementation strength around the wellbore,which triggers shear deformations at the interface be‑tween the seabed energy soil and the extraction well,consequently impacting the well's stability.[Methods]In order to study the geomechanical properties of reservoir soil-structure,research was conducted by using a GDS interface shear device on remolded soil samples from the Shenhu area's seabed energy soil reservoir in the South China Sea.The interface shear mechanical properties with various moisture contents and shear rates were examined,and the shear mechanical behavior of the reservoir soil-structure interface with different conditions was investigated.[Results]The findings re‑veal that the interface shear stress-strain demonstrates distinct elastoplastic characteristics,which can be represented by a logarithmic curve model.Shear induces volumetric changes in the soil,higher moisture contents and lower shear rates lead to more pronounced interface shear compaction deforma‑tion.The shear strength of the reservoir soil-structure interface increases with both normal stress and shear rate but decreases with an increase in moisture content.These findings provide a basis for the sta‑bility analysis of seabed energy soil reservoirs.关键词
海底能源土/土结构界面/界面剪切试验/含水率/剪切速率Key words
seabed energy soil/soil-structure interface/interface shear test/moisture content/shear rate分类
海洋科学引用本文复制引用
张玉,马硕,丁敬琪,罗一博,崔光磊..海底能源土-结构界面剪切试验研究[J].太原理工大学学报,2026,57(5):947-955,9.基金项目
国家自然科学基金资助项目(51890914,52179119) （51890914,52179119）
