| 岩石疲劳损伤及破坏前兆研究现状与展望 |
| |
| 引用本文： | 刘新锋,赵英群,王晓睿,于怀昌.岩石疲劳损伤及破坏前兆研究现状与展望[J].地球科学,2022,47(6):2190-2198. |
| |
| 作者姓名： | 刘新锋 赵英群 王晓睿 于怀昌 |
| |
| 作者单位： | 1.河南交投平宛高速公路有限公司, 河南郑州 450045 |
| |
| 基金项目： | 国家自然科学基金青年项目(No.51309100)； |
| |
| 摘 要： | 疲劳是岩石的重要力学特性之一，与工程的安全稳定密切相关.在循环荷载作用下，岩石初始损伤不断累积、加剧，最终导致岩石的失稳破坏，从而诱发工程灾变.阐述了近年来基于声发射、红外辐射技术开展岩石疲劳损伤与破坏方面的研究进展.首先论述了研究人员采用声发射时域参数、声发射空间演化以及Felicity比开展岩石疲劳损伤特性的研究进展.进而，针对研究人员采用声发射时域参数、损伤变量、分形维值、Felicity比、加卸载响应比、RA以及b值等参数开展岩石疲劳破坏前兆的研究进展进行讨论.在此基础上，论述了研究人员采用红外辐射技术开展岩石疲劳损伤与破坏前兆的研究进展.最后，提出了今后岩石疲劳损伤与破坏前兆研究中需要进一步深入解决的几点问题.本文可对深入认识岩石疲劳损伤机理、破坏前兆特征起到积极的促进作用.
|
| 关 键 词： | 疲劳损伤 破坏 声发射 红外辐射 岩土工程 工程地质 |
| 收稿时间： | 2021-08-10 |
Current Status and Prospects of Research on Fatigue Damage and Failure Precursors of Rocks |
| |
| Abstract: | Fatigue is one of the important mechanical properties of rocks, which is closely related to the safety and stability of engineering. Under the action of circulating loads, the initial damage of the rock continues to accumulate and intensify, eventually leading to the instability and destruction of the rock, thus inducing engineering catastrophes. In this paper, it describes the research progress of rock fatigue damage and failure based on acoustic emission and infrared radiation technology in recent years. Firstly, it discusses the research progress of rock fatigue damage characteristics carried out by researchers using acoustic emission time-domain parameters, acoustic emission spatial evolution, and Felicity ratio. Then, it discusses the research progress of researchers using acoustic emission time-domain parameters, damage variables, fractal dimension values, Felicity ratio, loading/unloading response ratio, RA and b-value parameters to carry out the research progress of rock fatigue failure precursors. On this basis, it also discusses the research progress of researchers using infrared radiation technology to develop rock fatigue damage and failure precursors.Finally, several issues that need to be further resolved in the future research on rock fatigue damage and failure precursors are put forward. This article can play a positive role in promoting the in-depth understanding of rock fatigue damage mechanism and failure precursor characteristics. |
| |
| Keywords: | |
|
| 点击此处可从《地球科学》浏览原始摘要信息 |
| 点击此处可从《地球科学》下载免费的PDF全文 |
|
