Experimental apparatus and method for interfacial shear characteristic between hydrate-bearing sediment and structure

US12422346B1 · kind B1 · utility

Assignee

• Dalian University of Technology · CN

Inventors

• Yanghui Li · 东风镇, CN
• Peng Wu · 东风镇, CN
• Yongchen SONG · 东风镇, CN
• Zhan Huang · Dalian, CN
• Mingjun Yang · 东风镇, CN
• Lei Yang · Shanghai, CN
• Zheng Ling · 东风镇, CN
• Lunxiang Zhang · 东风镇, CN
• Bingbing Chen · Nanjing, CN
• Zhi Cui · Dalian, CN

Key dates

• Filing date: Apr 30, 2025
• Grant date: Sep 23, 2025
• Expiry date: Apr 30, 2045

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/24
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An experimental apparatus for studying an interfacial shear characteristic between a hydrate-bearing sediment and a structure includes a triaxial shear pressure cell, a torsional and axial loading device, a methane gas source, an upper computer, a first pressure-volume controller, a water bath device, a second pressure-volume controller, an oil tank, a back pressure valve, a gas-water separator, a gas flowmeter, and a data acquisition system, where the triaxial shear pressure cell includes an upper pressing plate, an upper fixed disc, a loading rod, a pressure chamber upper cover, a high-pressure sealing cover, a lower rotating base disc, a thermal insulation plate, a lower pressing plate, a top cap, and a base. The experimental apparatus can achieve in-situ artificial hydrate formation for the study. The multi-directional load control-based shear method supports interfacial shear experiments under a complex stress path, providing hardware support for studying the interfacial shear mechanical characteristic.