用于天然气水合物储层力学测试的保真三轴试验装置设计  

Design of a fidelity triaxial test device for mechanical testing of natural gas hydrate reservoirs

作　　者：王玉红 金章勇 余振武 俞博桢 南立文 高巧玲 陈家旺[1,2] WANG Yuhong;JIN Zhangyong;YU Zhenwu;YU Bozhen;NAN Liwen;GAO Qiaoling;CHEN Jiawang(Ocean College,Zhejiang University,Zhoushan 316021,China;Donghai Laboratory,Zhoushan 316021,China)

机构地区：[1]浙江大学海洋学院,浙江舟山316021 [2]东海实验室,浙江舟山316021

出　　处：《实验技术与管理》2025年第2期145-151,共7页Experimental Technology and Management

基　　金：浙江大学实验技术揭榜挂帅重点研究项目(SZD202205);浙江大学科研项目资助(XY2023041)。

摘　　要：该文设计了一种船载天然气水合物保真三轴试验装置,用于研究天然气水合物储层的力学性质。装置包括样品转移系统、三轴主机、支架、数据采集系统、温度控制系统和保压系统等多个模块。通过精确控制试验过程中的原位压力和温度,确保了天然气水合物状态的稳定性,从而模拟原位环境下的天然气水合物力学行为。使用ANSYS软件对装置应变柱结构进行模拟分析,确定了应变片的最佳粘贴位置,验证了设计的合理性和实际应用中的可靠性。该试验装置能有效地进行天然气水合物储层的准原位力学特性测试,为深海沉积物的力学性质研究提供技术支持。[Objective]The rising demand for deep-sea energy exploration and the need to ensure safety has made the study of the mechanical properties of natural gas hydrate reservoirs increasingly important.Natural gas hydrates,recognized as a potential clean energy source,offer wide distribution,deep burial,no pollution,and high energy density,making them ideal for future energy development.However,their extraction poses significant challenges,including potential geological hazards and environmental risks.To enable safe extraction,a comprehensive understanding of the mechanical behavior of gas hydrate reservoirs is essential.Current research has its limitations,particularly regarding in-situ or quasi-in-situ testing methodologies.Addressing these gaps requires the development of a shipborne triaxial testing apparatus specifically designed for deep-sea sediments.[Methods]This paper examines the mechanical properties of natural gas hydrate reservoirs using a shipborne triaxial testing apparatus.The apparatus integrates multiple modules,including a sample transfer system,a triaxial host system,support structures,a data acquisition system,a temperature control system,and a pressurization system.By precisely controlling in-situ pressure and temperature conditions during testing,the apparatus ensures hydrate stability,enabling accurate simulation of sediment mechanical behavior under real-world conditions.Simulation analysis of the apparatus’s strain column structure was conducted using ANSYS software,which identified the optimal placement for strain gauges and confirmed the design rationality and reliability for practical applications.The data acquisition system is used to monitor parameters such as pressure,temperature,sample stress,and deformation during the triaxial testing process.The displacement and stress sensors are designed with special structures to meet the requirements of a compact shipborne laboratory.The temperature control system maintains the sample at a stable temperature,preventing fluctuations that could im

关 键 词：天然气水合物 三轴试验 船载实验室 应力/应变分析 

分 类 号：TU459[建筑科学—岩土工程] TE19[建筑科学—土工工程]