A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction

doi:10.3390/rs9040383

CORC > 地质与地球物理研究所 > 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

	A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction
	Qi, Shengwen 1,2; Zou, Yu 1,2; Wu, Faquan 3; Yan, Changgen 4; Fan, Jinghui 5; Zang, Mingdong 1,2; Zhang, Shishu 6; Wang, Ruyi 7
刊名	REMOTE SENSING
	2017-04-01
卷号	9 期号:4
关键词	Deep-seated Landslide Ancient Landslide The Last Glaciation High-density Electric Resistivity Method Insar
ISSN号	2072-4292
DOI	10.3390/rs9040383
文献子类	Article
英文摘要	Forty-six ancient Tibetan star-shaped towers and a village are located on a giant slope, which would be partially flooded by a nearby reservoir currently under construction. Ground survey, boreholes, and geophysical investigations have been carried out, with results indicating that the slope consists of loose deposit with a mean thickness of approximately 80 m in addition to an overlying bedrock of micaceous schist and phyllite. Ground survey and Interferometric Synthetic Aperture Radar (InSAR) indicated that the slope is experiencing some local deformations, with the appearance of cracks and occurrence of two small landslides. Through using borehole logs with the knowledge of the regional geological background, it can be inferred that the loose deposit is a result of an ancient deep-seated translational landslide. This landslide was initiated along the weak layer of the bedding plane during the last glaciation in the late Pleistocene (Q(3)) period, which was due to deep incision of the Dadu River at that time. Although it has not shown a major reaction since the ancient Tibetan star-shaped towers have been built (between 200 and 1600 AD), and preliminary studies based on geological and geomorphological analyses incorporated with InSAR technology indicated that the landslide is deformable. Furthermore, these studies highlighted that the rate of deformation is gradually reducing from the head to the toe area of the landslide, with the deformation also exhibiting relationships with seasonal rainstorms. The state of the toe area is very important for stabilizing a landslide and minimizing damage. It can be expected that the coming impoundment of the reservoir will increase pore pressure of the rupture zone at the toe area, which will then reduce resistance and accelerate the deformation. Future measures for protection of the slope should be focused on toe erosion and some bank protection measures (i.e., rock armor) should be adopted in this area. Meanwhile, some long-term monitoring measures should be installed to gain a deep understanding on the stability of this important slope.
WOS关键词	DIFFERENTIAL SAR INTERFEROGRAMS ; 3 GORGES RESERVOIR ; L-BAND INSAR ; QIANJIANGPING LANDSLIDE ; CHINA ; INTERFEROMETRY ; SLOPE ; STABILITY ; DEFORMATION ; MECHANISM
WOS研究方向	Remote Sensing
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000402571700082
资助机构	National Natural Science Foundation of China(41322020 ; Chinese Academy of Science(KFJ-EW-STS-094) ; 41672307) ; National Natural Science Foundation of China(41322020 ; Chinese Academy of Science(KFJ-EW-STS-094) ; 41672307) ; National Natural Science Foundation of China(41322020 ; Chinese Academy of Science(KFJ-EW-STS-094) ; 41672307) ; National Natural Science Foundation of China(41322020 ; Chinese Academy of Science(KFJ-EW-STS-094) ; 41672307)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/52868]
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, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 3.Shaoxing Univ, Coll Civil Engn, Shaoxing 312000, Peoples R China 4.Changan Univ, Highway Sch, Xian 710064, Peoples R China 5.China Aerogeophys Survey & Remote Sensing Ctr Lan, Beijing 100083, Peoples R China 6.Chengdu Engn Co Ltd, China Power, Chengdu 610072, Peoples R China 7.China Zhengyuan Geomat Co Ltd, Jinan 250101, Peoples R China
推荐引用方式 GB/T 7714	Qi, Shengwen,Zou, Yu,Wu, Faquan,et al. A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction[J]. REMOTE SENSING,2017,9(4).
APA	Qi, Shengwen.,Zou, Yu.,Wu, Faquan.,Yan, Changgen.,Fan, Jinghui.,...&Wang, Ruyi.(2017).A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction.REMOTE SENSING,9(4).
MLA	Qi, Shengwen,et al."A Recognition and Geological Model of a Deep-Seated Ancient Landslide at a Reservoir under Construction".REMOTE SENSING 9.4(2017).