| 黄土蠕变特性研究进展 |
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| 引用本文： | 戚志宇1,2,3,李志清1,2,3. 黄土蠕变特性研究进展[J]. 延边大学学报(自然科学版), 2023, 0(3): 485-510. DOI: 10.19814/j.jese.2022.10028 |
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| 作者姓名： | 戚志宇1 2 3 李志清1 2 3 |
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| 作者单位： | (1. 中国科学院地质与地球物理研究所 中国科学院页岩气与地质工程重点实验室,北京 100029; 2. 中国科学院大学 地球与行星科学学院,北京 100049; 3. 中国科学院地球科学研究院,北京 100029) |
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| 摘 要： | 黄土地区重大工程建设引发的崩塌、滑坡、地面沉降等地质灾害,往往与黄土蠕变特性密切相关。从黄土蠕变研究阶段、研究方法、本构模型和蠕变引发的工程灾害等方面进行梳理,归纳总结了黄土蠕变研究的现状,探讨了黄土蠕变研究中存在的问题以及未来研究的趋势。具体来说,①在系统梳理国内外研究文献基础上,将黄土蠕变研究分为3个阶段,分别为黄土基本性质研究阶段、黄土工程灾害研究阶段和黄土重大工程研究阶段; ②从黄土蠕变研究方法出发,分析讨论了黄土蠕变研究中采用的各类方法以及影响黄土蠕变的各类要素,尤其是含水量、干密度以及荷载对黄土蠕变特性的影响; ③总结了黄土蠕变本构模型的研究特点,评述了包括元件理论本构模型、经验本构模型及半经验半理论本构模型等3类模型的优缺点; ④对黄土地区常见的边坡、路(地)基、隧道等工程类型的蠕变破坏特征进行了梳理; ⑤建立考虑多因素影响的黄土蠕变本构模型、系统研究黄土蠕变微结构的动态演化和微观本构模型及动荷载作用下的蠕变特征,是未来黄土蠕变研究的发展趋势。
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| 关 键 词： | 黄土 蠕变 本构模型 微观结构 三轴试验 边坡 路基 隧道 |
Review on Creep Properties of Loess |
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| QI Zhi-yu1,2,' target="_blank" rel="external">3,LI Zhi-qing1,2,' target="_blank" rel="external">3. Review on Creep Properties of Loess[J]. Journal of Yanbian University (Natural Science), 2023, 0(3): 485-510. DOI: 10.19814/j.jese.2022.10028 |
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| Authors: | QI Zhi-yu1,2,' target=" _blank" rel=" external" >3,LI Zhi-qing1,2,' target=" _blank" rel=" external" >3 |
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| Affiliation: | (1. Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; 3. Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China) |
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| Abstract: | The geological disasters such as collapse, landslides, and ground subsidence caused by major engineering projects in the loess area are often closely related to the creep properties of loess. The current research of loess creep is summarized from the aspects of research stages, research methods, constitutive models, and engineering disasters, which are caused by creep of loess; the existing problems and the future trends in the research of loess creep are discussed. Specifically, ① based on a systematic review of domestic and foreign literature, the research of loess creep is divided into three stages, including the basic properties research stage, the engineering disaster research stage, and the major engineering project research stage; ② starting from the research methods of loess creep, various methods used in the research of loess creep and various factors affecting loess creep, especially the influence of water content, dry density and load on creep properties of loess, are analyzed and discussed; ③ the research characteristics of loess creep constitutive models are summarized, and the advantages and disadvantages of three models, including element theory constitutive model, empirical constitutive model, and semi-empirical and semi-theoretical constitutive model are evaluated; ④ the creep failure characteristics of common engineering types, such as slopes, roadbeds and tunnels in the loess area are summarized; ⑤ establishing a loess creep constitutive model that considers the influence of multiple factors, systematically studying the dynamic evolution and microscopic constitutive models of loess creep, and studying the creep properties under dynamic load, are the future trends of loess creep research. |
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| Keywords: | loess creep constitutive model microstructure triaxial test slope roadbed tunnel |
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