A hypoplastic model for hydrate dissociation considering grain breakage

IF 5.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Acta Geotechnica Pub Date : 2025-09-11 DOI:10.1007/s11440-025-02747-z

Haoyong Qian, Wei Wu, Chengshun Xu, Jialin Xu, Xiuli Du

引用次数: 0

Abstract

A hypoplastic model is proposed to simulate the mechanical properties of hydrate-bearing sand during dissociation by incorporating relative breakage ratio, hydrate bonding force, and degradation solid hardness. The relative breakage ratio and an internal tensor are introduced to describe the effect of grain breakage and hydrate bonding force of hydrate-bearing sand. Moreover, the evolution of the solid hardness is used for the creep behavior of the hydrate-bearing sand. The validation of model performance is conducted by simulating different types of laboratory experiments, including triaxial compression and dissociation tests of hydrate-bearing sand.

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考虑颗粒破碎的水合物解离发育不良模型

采用相对破碎率、水合结合力和降解固体硬度等参数，建立了含水砂土的发育不全模型。引入相对破碎比和内张量来描述含水砂土的颗粒破碎和水合结合力的影响。此外，还将固体硬度的演变用于含水砂的蠕变行为。通过模拟不同类型的室内试验，包括含水砂土的三轴压缩和解离试验，对模型的性能进行了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Geotechnica ENGINEERING, GEOLOGICAL-

CiteScore

9.90

自引率

17.50%

发文量

297

审稿时长

4 months

期刊介绍： Acta Geotechnica is an international journal devoted to the publication and dissemination of basic and applied research in geoengineering – an interdisciplinary field dealing with geomaterials such as soils and rocks. Coverage emphasizes the interplay between geomechanical models and their engineering applications. The journal presents original research papers on fundamental concepts in geomechanics and their novel applications in geoengineering based on experimental, analytical and/or numerical approaches. The main purpose of the journal is to foster understanding of the fundamental mechanisms behind the phenomena and processes in geomaterials, from kilometer-scale problems as they occur in geoscience, and down to the nano-scale, with their potential impact on geoengineering. The journal strives to report and archive progress in the field in a timely manner, presenting research papers, review articles, short notes and letters to the editors.