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Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method

文献类型：期刊论文

作者Xu XQ(徐兴倩)1,3,4; Su LJ(苏立君)1,2,3; Zhang Guangda5; Zhu HH(朱鸿鹄)6; Xu, Xing-qian; Su, Li-jun
刊名Landslides
出版日期2017
卷号14页码:1127–1137
ISSN号1612-510X
关键词Landslide Dual-source surface wave method Microtremor Shear wave velocity
通讯作者苏立君
中文摘要

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.

英文摘要

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.

收录类别SCI
语种英语
源URL[http://ir.imde.ac.cn/handle/131551/17959]  
专题成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位1.中国科学院山地灾害与地表过程重点实验室，中国科学院水利部成都山地灾害与环境研究所，四川 成都，610041
2.中国科学院青藏高原地球科学卓越创新中心，北京，100101
3.中国科学院大学，北京，100049
4.云南农业大学水利学院，昆明，650201
5.Sichuan Zhongcheng coal Geophysical Engineering Institute Co. Ltd, Chengdu610072, P. R. China
6.南京大学地球科学与工程学院，南京，210023
推荐引用方式
GB/T 7714		 Xu XQ,Su LJ,Zhang Guangda,et al. Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method[J]. Landslides,2017,14:1127–1137.
APA Xu XQ,Su LJ,Zhang Guangda,Zhu HH,Xu, Xing-qian,&Su, Li-jun.(2017).Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method.Landslides,14,1127–1137.
MLA Xu XQ,et al."Analysis on shear wave velocity structure of a gravel landslide based on dual-source surface wave method".Landslides 14(2017):1127–1137.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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