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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
Seismic response of the Lengzhuguan slope caused by topographic and geological effects

文献类型：期刊论文

作者He, Jianxian1,2,5; Qi, Shengwen1,2,5; Wang, Yunsheng4; Saroglou, Charalampos3
刊名ENGINEERING GEOLOGY
出版日期2020-02-01
卷号265页码:13
关键词Topography effects Geology effects Seismic response amplification Field observation Numerical simulation
ISSN号0013-7952
DOI10.1016/j.enggeo.2019.105431
英文摘要Earthquake-induced slope failure often results in a large loss of life and property, and thus, understanding how a slope responds to seismic shaking can reveal the mechanism and movement of this kind of phenomenon. After the 2008 Wenchuan earthquake, a dense array of strong earthquake seismographs were deployed along the Lengzhuguan slope, Luding County, Sichuan Province, Southwest China, to study the seismic response of the slope. Three main shocks were recorded in 2014 and 2015, with epicenter distances between 34 km and 70 km. Observation data show that the ground motion was polarized in the direction perpendicular to the elongation direction of the ridge (near 50 azimuth from North), with an amplification coefficient > 10 and a ground motion amplification frequency band between 1.5 and 2.5 Hz. The results of a series of numerical simulation experiments conducted using the finite difference method indicate that the observed seismic response characteristics of the Lengzhuguan slope can be reproduced only by a heterogeneous model containing a loose deposit layer with a thickness of 30 m. It was found that geological and topographic conditions resulted in complex slope seismic response characteristics that were coupled in both time and frequency, and the geological conditions dominated the seismic response of the slope. In terms of co-seismic landslide hazard, more attention should be given to subsurface lithology and rock mass structure.
WOS关键词SITE-CLASSIFICATION METHOD ; STRONG-MOTION STATIONS ; GROUND-MOTION ; AMBIENT NOISE ; SURFACE-TOPOGRAPHY ; DYNAMIC-RESPONSES ; SPECTRAL RATIO ; EARTHQUAKE ; AMPLIFICATION ; WAVES
资助项目National Natural Science Foundation of China[41825018] ; National Natural Science Foundation of China[41672307] ; National Natural Science Foundation of China[41790442] ; National Natural Science Foundation of China[41322020] ; National Natural Science Foundation of China[41877235]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000517660100038
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/95628]  
专题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
通讯作者Qi, Shengwen
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Natl Tech Univ Athens, Sch Civil Engn, Dept Geotech Engn, Athens, Greece
4.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 He, Jianxian,Qi, Shengwen,Wang, Yunsheng,et al. Seismic response of the Lengzhuguan slope caused by topographic and geological effects[J]. ENGINEERING GEOLOGY,2020,265:13.
APA He, Jianxian,Qi, Shengwen,Wang, Yunsheng,&Saroglou, Charalampos.(2020).Seismic response of the Lengzhuguan slope caused by topographic and geological effects.ENGINEERING GEOLOGY,265,13.
MLA He, Jianxian,et al."Seismic response of the Lengzhuguan slope caused by topographic and geological effects".ENGINEERING GEOLOGY 265(2020):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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