Abstract
At about 04:00 on 10 August 2019, the heavy rainfall carried by Typhoon Lekima induced a catastrophic rockslide in Shanzao Village, Yongjia County, China. The heavy rainfall triggered the tuff rock mass of about 12×104 m3 in volume sliding along the interbedded mudstone. Subsequently, the Shaozao river at the slope toe was blocked by the sliding mass, which formed a landslide dam afterwards. The dam broke later, ruining many houses and causing 32 casualties. We investigated the geological setting, characteristics, and failure mechanisms of the Shanzao rockslide through field investigation. In addition, the dynamic course of the landslide was analyzed using discrete element method. This paper reveals the dynamic course and risk assessment of the rockslides in the mountainous areas of the Southeast China. The findings can provide guidelines for processing the landslides with similar geological conditions.
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References
Chen X, Ma T, Li C, Liu H, Ding B, Peng W (2018) The catastrophic 13 November 2015 rock-debris slide in Lidong, south-western Zhejiang (China): a landslide triggered by a combination of antecedent rainfall and triggering rainfall. Geo Nat Haz Risk 9(1):608–623
Chigira M (2002) Geologic factors contributing to landslide generation in a pyroclastic area: August 1998 Nishigo Village, Japan. Geomorphology 46(1-2):117–128
Cundall PA, Strack OD (1979) A discrete numerical model for granular assemblies. Geotechnique 29(1):47–65
Deng Q, Gong L, Zhang L, Yuan R, Xue Y, Geng X, Hu S (2017) Simulating dynamic processes and hypermobility mechanisms of the Wenjiagou rock avalanche triggered by the 2008 Wenchuan earthquake using discrete element modelling. Bull Eng Geol Environ 76(3):923–936
Hutchinson JN (1986) A sliding–consolidation model for flow slides. Can Geotech J 23(2):115–126
Hutchinson J N (2002) Chalk flows from the coastal cliffs of northwest Europe. Catastrophic landslides: effects, occurrence, and mechanisms. Boulder, Colorado: The Geological Society of America: 257-302.
Itasca Consulting Group (Itasca) (2004) Particle flow code in 2 dimensions (version 3.1). Minneapolis, Minnesota, USA
Kang X, Xu GL, Liu FS, Dong TX (2018) Pore pressure and stability analysis of a multi-layered volcanic rock landslide under continuous rainfall. The Chinese J Geological Haz Control 29(01):15–22 (In Chinese)
Li WC, Li HJ, Dai FC, Lee LM (2012a) Discrete element modeling of a rainfall-induced flowslide. Eng Geol 149:22–34
Li X, He S, Luo Y, Wu Y (2012b) Simulation of the sliding process of Donghekou landslide triggered by the Wenchuan earthquake using a distinct element method. Environ Earth Sci 65(4):1049–1054
Lin CH, Lin ML (2015) Evolution of the large landslide induced by Typhoon Morakot: a case study in the Butangbunasi River, southern Taiwan using the discrete element method. Eng Geol 197:172–187
Liu Y, Ma K, Hou J, Yan L, Chen F (2019) Diagenetic controls on the quality of the Middle Permian Lucaogou Formation tight reservoir, southeastern Junggar Basin, northwestern China. J Asian Earth Sci 178:139–155
Lo CM, Lin ML, Tang CL, Hu JC (2011) A kinematic model of the Hsiaolin landslide calibrated to the morphology of the landslide deposit. Eng Geol 123(1-2):22–39
Lu CY, Tang CL, Chan YC, Hu JC, Chi CC (2014) Forecasting landslide hazard by the 3D discrete element method: a case study of the unstable slope in the Lushan hot spring district, central Taiwan. Eng Geol 183:14–30
Ma J, Liu G, Huang Z, Ou G, Li T, Guo X (2020) Tight tuff reservoir characteristics and its controlling factors: a comparative study of the Permian Tiaohu Formation and Carboniferous Haerjiawu Formation in the Santanghu Basin, NW China. J Pet Sci Eng 187:106808
Miao H, Wang G, Yin K, Kamai T, Li Y (2014) Mechanism of the slow-moving landslides in Jurassic red-strata in the Three Gorges Reservoir, China. Eng Geol 171:59–69
Potyondy DO, Cundall PA (2004) A bonded-particle model for rock. Int J Rock Mech Min Sci 41(8):1329–1364
Rahardjo H, Lee TT, Leong EC, Rezaur RB (2005) Response of a residual soil slope to rainfall. Can Geotech J 42(2):340–351
Shi GH (1992) Discontinuous deformation analysis: a new numerical model for the statics and dynamics of deformable block structures. Eng Comput 9(2):157–168
Spagnoli G, Fernández-Steeger T, Feinendegen M, Stanjek H, Azzam R (2010) The influence of the dielectric constant and electrolyte concentration of the pore fluids on the undrained shear strength of smectite. Soils Found 50(5):757–763
Tang CL, Hu JC, Lin ML, Angelier J, Lu CY, Chan YC, Chu HT (2009) The Tsaoling landslide triggered by the Chi-Chi earthquake, Taiwan: insights from a discrete element simulation. Eng Geol 106(1-2):1–19
Tang CL, Hu JC, Lin ML, Yuan RM, Cheng CC (2013) The mechanism of the 1941 Tsaoling landslide, Taiwan: insight from a 2D discrete element simulation. Environ Earth Sci 70(3):1005–1019
Teufelsbauer H, Wang Y, Chiou MC, Wu W (2009) Flow–obstacle interaction in rapid granular avalanches: DEM simulation and comparison with experiment. Granul Matter 11(4):209–220
Trandafi AC, Amini ZA (2009) Yielding mechanism of shallow mass movements in completely decomposed Norwood Tuff: the Zigzag Sign landslide, Utah. Environ Geol 57(6):1443
Wei J, Zhao Z, Xu C, Wen Q (2019) Numerical investigation of landslide kinetics for the recent Mabian landslide (Sichuan, China). Landslides 16(11):2287–2298
Wen BP, He L (2012) Influence of lixiviation by irrigation water on residual shear strength of weathered red mudstone in Northwest China: implication for its role in landslides’ reactivation. Eng Geol 151:56–63
Xu L, Dai FC, Tham LG, Tu XB, Min H, Zhou YF, Xu K (2011) Field testing of irrigation effects on the stability of a cliff edge in loess, North-west China. Eng Geol 120(1-4):10–17
Yamagishi H, Ito Y (1994) Relationship of the landslide distribution to geology in Hokkaido, Japan. Eng Geol 38(3-4):189–203
Yang B, Jiao Y, Lei S (2006) A study on the effects of microparameters on macroproperties for specimens created by bonded particles. Eng Comput 23(6):607–631
Zhang L, Tang HM, Xiong CR (2012) Movement process simulation of high-speed long-distance Jiweishan landslide with PFC3D. Chin J Rock Mech Eng 31(S1):2601–2611 (In Chinese)
Zhang M, Wu L, Zhang J, Li L (2019a) The 2009 Jiweishan rock avalanche, Wulong, China: deposit characteristics and implications for its fragmentation. Landslides 16(5):893–906
Zhang J, Liu G, Cao Z, Tao S, Felix M, Kong Y, Zhang (2019b) Characteristics and formation mechanism of multi-source mixed sedimentary rocks in a saline lake, a case study of the Permian Lucaogou Formation in the Jimusaer Sag, northwest China. Mar Pet Geol 102:704–724
Zhang Y, Zhang Z, Xue S (2020) Stability analysis of a typical landslide mass in the Three Gorges Reservoir under varying reservoir water levels. Environ Earth Sci 79(1). https://doi.org/10.1007/s12665-019-8779-x
Acknowledgments
We are grateful to Yuqun Huang for editing our manuscript and helping to make it more readable. This work was supported by the National Natural Science Foundation of China (41772334; 41920104007) and the China Geological Survey (DD20190648).
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Wu, Y., Zhang, M., Yang, L. et al. Failure mechanisms and dynamics of the Shanzao rockslide in Yongjia County, China on 10 August 2019. Landslides 18, 2565–2574 (2021). https://doi.org/10.1007/s10346-021-01673-x
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DOI: https://doi.org/10.1007/s10346-021-01673-x