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Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method
Xu, Xing-qian1,2,3,4; Su, Li-jun1,2,5; Zhang, Guang-da6; Zhu, Hong-hu7
Corresponding Author苏立君
2017
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume14Issue:3Pages:1127-1137
SubtypeArticle
Abstract

The depth and geometry of the potential sliding surface is the fundamental basis for evaluating the mechanism and performing mitigation measures of a landslide. The variation of shear wave velocity can directly reflect the characteristics of the strata structure in a landslide. For traditional methods (PS logging, surface exploration, H/V spectral ration and microtremor survey etc.), it is difficult to assure a large probing depth and high resolution at the same time. Joint observations were conducted using initiative-source multichannel analysis of surface wave (MASW) method and passive-source microtremor survey method (MSM) on the Xishan village landslide located in Li County, Sichuan Province, China. Both frequency wave number method (F-K) and spatial auto correlation method (SPAC) were conducted to process the digital signal to analyze the shear wave velocity in the landslide, respectively. The Dual-source Surface Wave (DSSW) method was combined with MASW and MSM. The detected 2D profiles from the DSSW method showed that the landslide strata information was consistent with the borehole data. The results suggested that average depth of the potential sliding surface was about 50 meters, of which the undulating shape was also clear. The boundary of the potential sliding surface was formed by weathered phyllite. It indicated that the DSSW method could assure both the exploration depth and enabling good resolution at the same time, which was an effective method to detect landslide structure and expected to be applied in survey of other geological hazards.

;

The depth and geometry of the potential sliding surface is the fundamental basis for evaluating the mechanism and performing mitigation measures of a landslide. The variation of shear wave velocity can directly reflect the characteristics of the strata structure in a landslide. For traditional methods (PS logging, surface exploration, H/V spectral ration and microtremor survey etc.), it is difficult to assure a large probing depth and high resolution at the same time. Joint observations were conducted using initiative-source multichannel analysis of surface wave (MASW) method and passive-source microtremor survey method (MSM) on the Xishan Village landslide located in Li County, Sichuan Province, China. Both frequency wave number method (F-K) and spatial auto correlation method (SPAC) were conducted to process the digital signal to analyze the shear wave velocity in the landslide, respectively. The Dual-source Surface Wave (DSSW) method was combined with MASW and MSM. The detected 2D profiles from the DSSW method showed that the landslide strata information was consistent with the borehole data. The results suggested that average depth of the potential sliding surface was about 50 m, of which the undulating shape was also clear. The boundary of the potential sliding surface was formed by weathered phyllite. It indicated that the DSSW method could assure both the exploration depth and enabling good resolution at the same time, which was an effective method to detect landslide structure and expected to be applied in survey of other geological hazards.

KeywordLandslide Dual-source Surface Wave Method Microtremor Shear Wave Velocity
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s10346-016-0780-9
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS KeywordFRENCH ALPS ; SPAC METHOD ; NOISE ; MICROTREMORS
Language英语
Quartile2区
TOP
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000401697900024
Funding OrganizationNational Basic Research program of China (973 program)(2013CB733201) ; Chinese Academy of Sciences(KZZD-EW-05-01)
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17959
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
3.Yunnan Agr Univ, Coll Water Conservancy, Kunming 650201, Yunnan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
6.Sichuan Zhongcheng Coal Geophys Engn Inst Co Ltd, Chengdu 610072, Peoples R China
7.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Xu, Xing-qian,Su, Li-jun,Zhang, Guang-da,et al. Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method[J]. LANDSLIDES,2017,14(3):1127-1137.
APA Xu, Xing-qian,Su, Li-jun,Zhang, Guang-da,&Zhu, Hong-hu.(2017).Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method.LANDSLIDES,14(3),1127-1137.
MLA Xu, Xing-qian,et al."Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method".LANDSLIDES 14.3(2017):1127-1137.
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