| 黄土震陷研究及相关问题探讨 |
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| 引用本文： | 王强,孙军杰,王兰民,陈秀清.黄土震陷研究及相关问题探讨[J].中国地震研究,2013,27(4):479-489. |
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| 作者姓名： | 王强 孙军杰 王兰民 陈秀清 |
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| 作者单位： | 甘肃省地震局（中国地震局黄土地震工程重点实验室），兰州730000 ; 中国地震局兰州地震研究所，兰州730000 ; 甘肃省岩土防灾工程技术研究中心，兰州730000;4）甘肃有色工程勘察设计研究院，兰州730000;甘肃省地震局（中国地震局黄土地震工程重点实验室），兰州730000 ; 中国地震局兰州地震研究所，兰州730000 ; 甘肃省岩土防灾工程技术研究中心，兰州730000;4）甘肃有色工程勘察设计研究院，兰州730000;甘肃省地震局（中国地震局黄土地震工程重点实验室），兰州730000 ; 中国地震局兰州地震研究所，兰州730000 ; 甘肃省岩土防灾工程技术研究中心，兰州730000;4）甘肃有色工程勘察设计研究院，兰州730000;甘肃有色工程勘察设计研究院，兰州730000 |
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| 基金项目： | This project was sponsored by the Basic Research Foundation of Institute of Earthquake Science，China Earthquake Administration (No． 2011IESLZ03) ． |
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| 摘 要： | The research and achievements made on seismic subsidence of loess, obtained over the past 30 years, were reviewed. Seismic Subsidence of Loess （SSL） has been verified by microstructure characteristics, dynamic triaxial experiments, and in-situ explosion tests, and has become an important subject in the field of seismic loess engineering research. While, the research is still in the stage of theoretical study of saturated soil, and there are no representative cases of seismic subsidence of loess in historical earthquakes. It is difficult to express structure characteristics using microstructure morphology. While, soil mechanics are available methods for this. Seismic subsidence judgment is absolute in some certain value ranges for several parameters. Therefore, probabilistic judgment should be developed. The seismic subsidence ratio is estimated mostly by empirical formulas or semi- empirical and semi-theoretical formulas, which are based on laboratory data. These formulas are not established on the basis of physical process and mechanics of seismic subsidence, and this leads to more variables, complicated computation, and poor practicability. To solve these problems, we need to distinguish the main factors and corresponding variables, to establish a mechanics model for seismic subsidence estimation, and to characterize its physio-mechanical process. The key of anti-seismic subsidence treatment is to reduce the seismic subsidence property of soils, and to lower the interaction between the soil body and underground structures.
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| 关 键 词： | 震陷 黄土 微观结构特征 半理论公式 微观结构形态 物理过程 动三轴试验 实验室数据 |
| 收稿时间： | 2012/4/20 0:00:00 |
Review and Discussion on Seismic Subsidence of Loess1 |
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| Wang Qiang,Sun Junjie,Wang Lanmin and Chen Xiuqing.Review and Discussion on Seismic Subsidence of Loess1[J].Earthquake Research in China,2013,27(4):479-489. |
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| Authors: | Wang Qiang Sun Junjie Wang Lanmin and Chen Xiuqing |
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| Institution: | [1]Key Laboratory of Loess Earthquake Engineering, Earthquake Administration of Gansu Province, Lanzhou 730000, China [2]Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China [3]Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou 730000, China [4]Gansu Non-ferrous Engineering Exploration and Design Research Institute, Lanzhou 730000, China |
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| Abstract: | Seismic Subsidence of Loess （SSL） Mechanism of seismic subsidence Seismic subsidence assessment Estimation of seismic subsidence amount Microstructure |
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| Keywords: | Seismic Subsidence of Loess ( SSL ) Mechanism of seismic subsidence Seismic subsidence assessment Estimation of seismic subsidence amount Microstructure |
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