Abstract
The catastrophic Baige landslide occurred on October 10, 2018 in the Tibet Autonomous Region, China, and formed a barrier lake with a direct economic loss of 6.8 billion RMB (~ 963.5 million USD). After the landslide, field investigations were conducted both to support emergency operations and to understand the failure mechanism immediately after the landslide. Detailed field surveys, borehole exploration, discharge measurements, laboratory experiments, and meteorological analyses were employed in this study to explore the mechanisms underlying the Baige landslide. A key influence from the water source in Bogong Gully on the Baige landslide formation was newly found. The results show that the underground of the slope comprises extremely weathered serpentinite, and fresh rock has not yet been revealed in boreholes. The seepage outlets are 450–550 m higher than the Jinsha River and ~ 118 m lower than the bed of Bogong Gully. Water flow in the channel of Bogong Gully is strongly infiltrated, with a flow loss of 62.6%. Seepage into the Bogong Gully, along with the landslide, caused by the local geological structure and lithology, accelerated the extreme weathering of rock masses and promoted landslide formation. Furthermore, extreme annual rainfall also contributed to the occurrence of the Baige landslide by increasing the discharge of the Bogong Gully. Further risk management measures in this area should include increasing the depth of geological explorations and the construction of drainage systems.
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References
Cui SH, Pei XJ, Huang RQ (2018) Effects of geological and tectonic characteristics on the earthquake-triggered daguangbao landslide, China. Landslides 15(4):649–667. https://doi.org/10.1007/s10346-017-0899-3
Deere DU, Hendron AJ, Patton FD, Cording EJ (1967) Design of surface and near-surface construction in rock. In: Fairhurst C (ed) Failure and breakage of rock. Society of Mining Engineers of AIME, New York, pp 237–302
Deng JH, Gao YJ, Yu ZQ, Xie HP (2019) Analysis on the formation mechanism and process of baige landslides damming the upper reach of Jinsha River, China. ADVANCED ENGINEERING SCIENCES 51(1):9–16. https://doi.org/10.15961/j.jsuese.201801438
Fan XM, Xu Q, Alonso-Rodriguez A, Subramanian SS, Li WL, Zheng G, Dong X, Huang R (2019) Successive landsliding and damming of the Jinsha River in eastern Tibet, China: prime investigation, early warning, and emergency response. Landslides 16(5):1003–1020. https://doi.org/10.1007/s10346-019-01159-x
Feng WK, Zhang GQ, Bai HL, Zhou YL, Xu Q, Zheng G (2019) A preliminary analysis of the formation mechanism and development tendency of the huge baige landslide in Jinsha River on October 11, 2018. J Eng Geol 27(2):415–425. https://doi.org/10.13544/j.cnki.jeg.2018-392
Geological Survey Report of the People’s Republic of China, 1988, Tibet Autonomous Region Geology and Minerals Bureau. (In Chinese)
Ietto F, Perri F, Cella F (2017) Weathering characterization for landslides modeling in granitoid rock masses of the Capo Vaticano promontory (Calabria, Italy). Landslides 15(1):43–62. https://doi.org/10.1007/s10346-017-0860-5
Li P, Lu W, Long Y, Yang Z, Li J (2008) Seepage analysis in a fractured rock mass: the upper reservoir of Pushihe Pumped-Storage Power Station in China. Eng Geol 97:53–62. https://doi.org/10.1016/j.enggeo.2007.12.005
Liang GL, Wang Z, Zhang GW, Wu LL (2019) Two huge landslides that took place in quick succession within a month at the same location of jinsha river. Landslides 16(5):1059–1062. https://doi.org/10.1007/s10346-019-01165-z
Ouyang CJ, An HC, Zhou S, Wang ZW, Su PC, Wang DP, Cheng DQ, She JX (2019) Insights from the failure and dynamic characteristics of two sequential landslides at Baige village along the Jinsha River, China. Landslides 16(7):1397–1414. https://doi.org/10.1007/s10346-019-01177-9
Wu YB, Niu RQ, Lu Z (2019) A fast monitor and real time early warning system for landslides in the Baige landslide damming event, Tibet, China. Natural Hazards and Earth System Sciences Discussions:1–20. https://doi.org/10.5194/nhess-2019-48
Xu Q, Zheng G, Li WL, He CY, Dong XJ, Guo C, Feng WK (2019) Study on successive landslide damming events of Jinsha River in Baige village on Octorber 11 and November 3, 2018. Journal of Engineering Geology 26(6):1534–1551. https://doi.org/10.13544/j.cnki.jeg.2018-406
Yang WT, Wang YQ, Sun S, Wang YJ, Ma C (2019) Using sentinel-2 time series to detect slope movement before the Jinsha River landslide. Landslides 16(7):1313–1324. https://doi.org/10.1007/s10346-019-01178-8
Zhang Z, He S, Liu W, Liang H, Yan SX, Deng Y, Bai XQ, Chen Z (2019) Source characteristics and dynamics of the October 2018 Baige landslide revealed by broadband seismograms. Landslides 16(4):777–785. https://doi.org/10.1007/s10346-019-01145-3
Funding
This study was financially supported by the National Natural Science Foundation of China (Grant Nos. 41861134008 and 41671112), and the Key R&D Projects of Sichuan Science and Technology Project (Grant No. 18ZDYF0329). All financial supports are greatly appreciated.
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Tian, S., Chen, N., Wu, H. et al. New insights into the occurrence of the Baige landslide along the Jinsha River in Tibet. Landslides 17, 1207–1216 (2020). https://doi.org/10.1007/s10346-020-01351-4
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DOI: https://doi.org/10.1007/s10346-020-01351-4