Frontiers | Influence of the Different Stress Paths on Rock Deformation Memory Effects using the Deformation Rate Analysis Method

IF 2 3区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Frontiers in Earth Science Pub Date : 2024-09-03 DOI:10.3389/feart.2024.1459447

Lingwei Zhong, Xuhua Ren, Haijun Wang, Guangchuan Zhao, Yang Li, Jiawei Zhu

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引用次数: 0

Abstract

Deformation memory effect (DME) is a common property of the rock. A method called Deformation Rate Analysis (DRA) which is based on DME provides a brand-new approach to measuring in situ stress. When rock DME is applied in engineering, it is necessary to solve the problem that which stress peak is corresponding to in situ stress. The standard square samples made of sandstone and granite were selected to investigate the rock DME under different stress paths. Then a memory theoretical model based on multi-surface sliding friction hysteresis is used to analyze the mechanisms of rock DME. The results show that: (1) Rocks always remember the maximum peak stress from preloading, regardless of the sequence of multiple preloading; (2) Multi-memory exists in tests because we found another inflection in DRA curve; (3) The memory model based on sliding friction hysteresis shows the precision of memory information formation increases as the historical maximum peak value gets closer to the measurement load, but multi-memory does not exist in theoretical analysis. The conclusion provides the rule of rock DME under different stress path which would benefits in in situ stress reconstruction.

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前沿 | 利用变形率分析方法分析不同应力路径对岩石变形记忆效应的影响

变形记忆效应（DME）是岩石的一种常见特性。基于 DME 的变形速率分析法（DRA）为测量原位应力提供了一种全新的方法。在工程中应用岩石 DME 时，需要解决哪一个应力峰与原位应力相对应的问题。本文选取了砂岩和花岗岩的标准方形样品，对不同应力路径下的岩石 DME 进行了研究。然后利用基于多表面滑动摩擦滞后的记忆理论模型分析了岩石 DME 的机理。结果表明(1) 无论多次预加载的顺序如何，岩石总是能记住预加载的最大峰值应力；(2) 试验中存在多重记忆，因为我们发现了 DRA 曲线的另一个拐点；(3) 基于滑动摩擦滞后的记忆模型表明，随着历史最大峰值越来越接近测量载荷，记忆信息形成的精度也越来越高，但理论分析中不存在多重记忆。结论提供了不同应力路径下岩石 DME 的规律，有利于原位应力重建。

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

Frontiers in Earth Science Earth and Planetary Sciences-General Earth and Planetary Sciences

CiteScore

3.50

自引率

10.30%

发文量

2076

审稿时长

12 weeks

期刊介绍： Frontiers in Earth Science is an open-access journal that aims to bring together and publish on a single platform the best research dedicated to our planet. This platform hosts the rapidly growing and continuously expanding domains in Earth Science, involving the lithosphere (including the geosciences spectrum), the hydrosphere (including marine geosciences and hydrology, complementing the existing Frontiers journal on Marine Science) and the atmosphere (including meteorology and climatology). As such, Frontiers in Earth Science focuses on the countless processes operating within and among the major spheres constituting our planet. In turn, the understanding of these processes provides the theoretical background to better use the available resources and to face the major environmental challenges (including earthquakes, tsunamis, eruptions, floods, landslides, climate changes, extreme meteorological events): this is where interdependent processes meet, requiring a holistic view to better live on and with our planet. The journal welcomes outstanding contributions in any domain of Earth Science. The open-access model developed by Frontiers offers a fast, efficient, timely and dynamic alternative to traditional publication formats. The journal has 20 specialty sections at the first tier, each acting as an independent journal with a full editorial board. The traditional peer-review process is adapted to guarantee fairness and efficiency using a thorough paperless process, with real-time author-reviewer-editor interactions, collaborative reviewer mandates to maximize quality, and reviewer disclosure after article acceptance. While maintaining a rigorous peer-review, this system allows for a process whereby accepted articles are published online on average 90 days after submission. General Commentary articles as well as Book Reviews in Frontiers in Earth Science are only accepted upon invitation.