| Citation: |
CONG Kai, MA Zongyuan, LI Ruidong. 2023. Three–dimensional Analysis of Seismic Stability and Failure Process of Lijie Landslide in Gansu Province, China. Northwestern Geology, 56(2): 283-291. doi: 10.12401/j.nwg.2022029
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Three–dimensional Analysis of Seismic Stability and Failure Process of Lijie Landslide in Gansu Province, China
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Abstract
The seismic stability and failure process of Lijie landslide is analyzed using the explicit finite element method with dynamic and large deformation modes. Firstly, the Lijie landslide seismic stability is analyzed with two–dimensional plane strain assumption. Then, a three–dimensional mountain model is established via the point cloud data, and three–dimensional landslide failure process analysis is processed to determine the maximum sliding distance and failure range of the landslide. The results obtained by the explicit finite element, three–dimensional and large deformation method in this paper is more accurate than that of the two–dimensional and small deformation method. This study will propose the theoretical guidance for earthquake resistance and the prevention of earthquake–induced landslide disaster.
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References
刘畅, 张平松, 杨为民, 等. 税湾地震黄土滑坡的岩土动力特性及其稳定性评价[J]. 西北地质, 2020, 53(04): 176-185 doi: 10.19751/j.cnki.61-1149/p.2020.04.016 Liu Chang, ZHANG Pingsong, YANG Weimin, et al. Geotechnical dynamic characteristics and stability evaluation of Shuiwan earthquake loess landslide[J]. Northwestern Geology, 2020, 53(04): 176-185. doi: 10.19751/j.cnki.61-1149/p.2020.04.016 谢定义. 土动力学[M]. 北京: 高等教育出版社, 2011 XIE Dingyi. Soil dynamics[M]. Beijing: Higher Education Press, 2011. 王兰民, 蒲小武, 陈金昌. 黄土高原地震诱发滑坡分布特征与灾害风险[J]. 城市与减灾. 2019, 3: 33-40 WANG Lanmin, PU Xiaowu, CHEN Jinchang. Distribution feature and disaster risk of earthquake-induced landslides in Loess Plateau[J]. Cities and Disaster Reduction. 2019, 3: 33-40. 王兰民, 吴志坚. 岷县漳县6.6级地震震害特征及其启示[J]. 地震工程学报, 2013, 35(3): 401-412 doi: 10.3969/j.issn.1000-0844.2013.03.0401 WANG Lanmin, WU Zhijian. Earthquake damage characteristics of the Minxian-Zhangxian Ms6.6 earthquake and its lessons[J]. Chinese Earthquake Engineering Journal, 2013, 35(3): 401-412. doi: 10.3969/j.issn.1000-0844.2013.03.0401 王振华, 马宗源, 党发宁. 等效线性和非线性方法土层地震反应分析对比[J]. 西安理工大学学报, 2013, 29(04): 421-427. doi: 10.19322/j.cnki.issn.1006-4710.2013.04.008 殷跃平. 汶川八级地震地质灾害研究[J]. 工程地质学报, 2008, 1(04): 433-444 doi: 10.3969/j.issn.1004-9665.2008.04.001 YIN Yueping. Features of landslides triggered by the Wenchuan earthquake[J]. Journal of Engineering Geology, 2008, 1(04): 433-444. doi: 10.3969/j.issn.1004-9665.2008.04.001 中华人民共和国国家治理监督检验检疫总局, 中国国家标准化管理委员会. 《中国地震动参数区划图》(GB18306-2015)[S]. 北京: 中国标准出版社, 2016. Griffiths DV, Lane PA. Slope stability analysis by finite elements[J]. Géotechnique, 1999; 49(3): 387-403. doi: 10.1680/geot.1999.49.3.387 Hardin B O, Drnevich V P. Shear Modulus and Damping in Soils: Design Equations and Curves[J]. Journal of the Soil Mechanics and Foundation Engineering Division, ASCE, 1972, 98(7): 667–692. doi: 10.1061/JSFEAQ.0001760 MA Zongyuan, LIAO Hongjian, DANG Faning, CHENG Yuxiang. Seismic slope stability and failure process analysis using explicit finite element method[J]. Bulletin of Engineering Geology and the Environment, 2021, 80: 1287–1301. doi: 10.1007/s10064-020-01989-3 MA Zongyuan, DANG Faning, LIAO Hongjian, CHENG Yuxiang. Seismic stability and failure process analysis of earth-filled dam[J]. Arabian Journal of Geosciences, 2020, 13(827): 1-12. Newmark N M. Effect of earthquake on dam and embankment[J]. Geotechnique, 1965, 15(2): 139-160. doi: 10.1680/geot.1965.15.2.139 Shukha R, Operstein V, Frydman S. Stability charts for pseudo-static slope stability analysis[J]. Soil dynamics and earthquake engineering. 2006; 26(9): 813-823. Travasarou T, Bray JD. Pseudostatic Coefficient for Use in Simplified Seismic Slope Stability Evaluation. Journal of geotechnical and geoenvironmental engineering. 2009; 135(9): 1336-1340. -
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CONG Kai, MA Zongyuan, LI Ruidong. 2023. Three–dimensional Analysis of Seismic Stability and Failure Process of Lijie Landslide in Gansu Province, China. Northwestern Geology, 56(2): 283-291. doi: 10.12401/j.nwg.2022029
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Figure 1.
Remote sensing image of Lijie landslide
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Figure 2.
Comparison of theoretical prediction and experimental data on loess
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Figure 3.
Relationship between maximum displacement of slope and strength reduction coefficient
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Figure 4.
Grid deformation of slope calculated by explicit and implicit finite element method
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Figure 5.
Time histories of seismic acceleration for calculation
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Figure 6.
Earthquake response acceleration spectra
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Figure 7.
Cross section of landslide mass
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Figure 8.
Slide calculation material partition and unit grid division diagram
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Figure 9.
Displacement contour of landslide during earthquake (m)
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Figure 10.
Displacement variation of monitoring point during earthquake
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Figure 11.
Calculation materials and elements of landslide
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Figure 12.
Calculation resluts of landslide during earthquake in critical state
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Figure 13.
Displacement counter of landslide during earthquake (m)