Numerical Simulation of Inverted Pear-shaped Landslide Based on Discrete Element Method

Jinliang Bai

doi:10.54691/nk6rc792

Authors

Jinliang Bai

DOI:

https://doi.org/10.54691/nk6rc792

Keywords:

Inverted Pear-shaped Landslide; Multiple Slides; MatDEM; Numerical Simulation.

Abstract

Landslides are very common geological hazards. Due to the different forms, scales and types of landslides, their formation mechanisms are different, which in turn cause the degree of damage and treatment measures are also quite different. As a rare type of landslide, “inverted pear-shaped” landslide has special planar characteristics and formation mechanism. This paper analyzes and summarizes the different causes and formation processes of this type of landslide. MatDAM, a discrete element numerical simulation software, is used to numerically simulate the movement process of this type of landslide. According to the model comparison before and after each slide, the pushing and wrapping effect of the subsequent slide on the residual slide of the previous slide is obtained. From the perspective of numerical simulation, quantitative data support is provided for the qualitative formation mechanism study.

Downloads

Download data is not yet available.

References

[1] Jian Wenbin, Wu Zhenxiang. Geological Hazards and Their Prevention and Control [M]. Geological Hazards and Their Prevention and Control, 2015.

[2] Liu Chuanzheng, Chen Chunli. 2020. Achievements and countermeasures in risk reduction of geological disasters in China[J]. Journal of EngineeringGeology,28(2): 375-383. doi: 10.13544 / j.cnki.jeg.2019-232

[3] Terzaghi K. Mechanism of landslides application of geology to engineering practice[J]. Geol. soc. America Berkley Volume, 1950: 83-123.

[4] Hvorslev M J. Time Lag and Soil Permeability in Ground-Water Observations, Waterways Experiment Station, Corps of Engineers[J]. U.s.army Bulletin, 1951, 36(118): 1-50.

[5] Heafeli R. Creep and Progressive Failure in Snow, Rock and Ice[C]. Montreal, 1956.

[6] Morgenstern N R. The Influence of Ground Water on Stability[J]. Proc. 1st.Inter.Confer. Stability Open Pit Mng, Vancouver, Nov.23-5, 1971: 65-81.

[7] Hu Guangtao. Mechanism of Sudden Start and High-Speed Movement in the Course of Disastrous Landslides [J]. Journal of Catastrophology, 1987(1): 17-28.

[8] Xu Bangdong. Landslide Analysis and Prevention [M]. China Railway Publishing House, 2001.

[9] Xu Bangdong, Wang Gongxian. Research on Landslide Prevention and Control [J]. China Railway Science, 1980(1): 110-122.

[10] Zhang Zhuoyuan. Principles of Engineering Geological Analysis [M]. Geological Publishing House, 1981.

[11] Zhang Maosheng, Li Tonglu. Triggering factors and forming mechanism of loess land-slides [J]. Journal of Engineering Geology, 2011, 19(4): 530-540.

[12] Lin Qiwen, Cheng Qian'gong, Li Kun, et al. 2023. Review on fragmentation-related dynamics of rock avalanches [J]. Journal of Engineering Geology, 31(3): 815-829. doi: 10.13544/j.cnki.jeg.2021-0035.

[13] N Jiang,HB Li,YX Hu, et al. Dynamic evolution mechanism and subsequent reactivated ancient landslide analyses of the "6.17" Danba sequential disasters[J]. Bulletin of Engineering Geology and the Environment, 2022, 81(4).

[14] Sun Qianzheng, Zhang Huaxiang, Xiang Gang, et al. Research on the Formation Mechanism of Tianbuzhai Landslide in Kaiyang County, Guizhou Province [J]. Yangtze River, 2021, 52(S1): 96-100.

[15] Ye Zhennan, Chen Zongliang, Gao Youlong, et al. Deformation Characteristics and Formation Mechanism of the Xieliupo Landslide-Debris Flow in Longnan, Gansu [J]. Science Technology and Engineering, 2021, 21(22): 9250-9257.

[16] Wang Xingang, Liu Kai, Lian Baoqin, et al. Recent advance in understanding inducing factors and formation mechanism of loess-mudstone landslides[J]. Journal of Northwest University (Natural Science Edition), 2021, 51(3): 404-413.

[17] Liu Hongshuai, Bo Jingshan, Liu Dedong. Review on study of seismic stability analysis of rock-soil slopes[J]. Journal of Earthquake Engineering and Engineering Vibration, 2005(1): 164-171.

[18] Huang Runqiu. Research on Geological Hazard Process Simulation and Process Control [M]. Research on Geological Hazard Process Simulation and Process Control, 2002.

[19] M. Board. FLAC (Fast Lagrangian Analysis of Continua), Version 2. 20[J], 1989.

[20] P. A. Cundall. A computer model for simulating progressive large-scale movements in blocky rock systems [J]. Proc.int. Symp. on Rock Fracture, 1971, 1(ii-b): 11-8.

[21] Liu Chun, Shi Bin, Gu Kai, et al. Development and Application of Large-Scale Discrete Element Simulation System for Rock and Soil [C]//Proceedings of the 2014 National Conference on Engineering Geology: Science Press, 2014: 560 - 566.

[22] Jiang Mingjing, Zhang Fuguang, Sun Yugang, et al. DEM simulation of mechanical behavior and bond breakage of different cemented sands [J]. Chinese Journal of Geotechnical Engineering, 2012, 34(11): 1969-1976.

[23] Sun Qicheng, Wang Guangqian. Introduction to the Mechanics of Granular Materials [M]. Introduction to the Mechanics of Granular Materials, 2009.

[24] Zhu Chenguang, Liu Chun, Xu Qiang, et al. Discrete Element Numerical Simulation Research on Frictional Heat in the Sliding Zone of the Landslide [J]. Journal of Engineering Geology, 2019, 27(3): 651-658.