Analysis of deep-sea sediment deformation behavior based on a simplified track plate model test
LIU Yuanyuan
LIU Yunfei
QUAN Daogang
DUAN Longjiang
ZHU Na
Abstract：The use of deep-sea ore collectors to collect seabed nodular ores is the mainstream mining method in the current seabed mining industry.However,research has largely focused on collector performance,with limited investigation into the response of seabed soil under tracked vehicle loads.Using Na-bentonite to simu-late deep-sea sediments,simplified track plate penetration-shear tests were conducted.High-speed imaging and digital image correlation(DIC)were employed to obtain the full-section displacement field distribution in-formation of deep-sea sedimentary simulated soil samples under the vertical indentation and horizontal shearing of the simplified track plate.Results indicate that soil deformation induced by the track teeth exhibits a semi-circular distribution centered on the teeth,with greater disturbance near the teeth.During shearing,the track teeth primarily disturb the soil in the direction of travel,mainly affecting the soil within the height of the teeth.These findings offer insights for optimizing track parameters and assessing seabed stability.
Keywords：tracked vehicle for deep-sea miningseabed sedimentsdisplacement field observationlaboratory model tests
Publication Date：2025-08-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 1-10 )