Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China
The Jiaopenba landslide, which represents a typical large basalt high-speed remote landslide, is located in Emeishan City, southwestern Sichuan province, China. Based on the field investigation, the characteristics of the Jiaopenba landslide have been revealed. The Jiaopenba landslide occurred on th...
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.919268/full |
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| author | Tong Shen Tong Shen Yunsheng Wang Xun Zhao Heng Liu Xuyang Wu Yapei Chu Panpan Zhai Yang Han |
| author_facet | Tong Shen Tong Shen Yunsheng Wang Xun Zhao Heng Liu Xuyang Wu Yapei Chu Panpan Zhai Yang Han |
| author_sort | Tong Shen |
| collection | DOAJ |
| description | The Jiaopenba landslide, which represents a typical large basalt high-speed remote landslide, is located in Emeishan City, southwestern Sichuan province, China. Based on the field investigation, the characteristics of the Jiaopenba landslide have been revealed. The Jiaopenba landslide occurred on the steep Mount Emei. Landslide materials with a volume of approximately 6.75×108 m3 slid down from a high position, forming a large-scale high-speed remote debris flow, with the farthest sliding distance of about 7.5 km. The landslide area is located in the west wing of the Emeishan anticline, which is cut by faults to form a monoclinal fault-block mountain. Although the shear outlet of the landslide is near the slope toe and does not have good free conditions, there are faults passing through the slope toe of the bedding slope of the fault hanging wall, the landslide is affected by the fault activity, and the integrity of the layered slope is poor. When the foot of the slope is empty, the fault zone is compressed and plastic extrusion, which leads to bedding slip of the slope rock mass and greatly weakens the interlayer bonding force. When coupled with long structural planes on both sides to form side crack planes, a large-scale inclined plate structure is formed. Under the action of a strong earthquake and other external forces, the rock mass near the fault can be damaged by tension, and a large-scale high-position landslide can be formed by the mode of compression-slip-tension fracture. |
| first_indexed | 2024-12-11T02:47:38Z |
| format | Article |
| id | doaj.art-b2619f7d691047f8be3f4aaca4718c1a |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-11T02:47:38Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-b2619f7d691047f8be3f4aaca4718c1a2022-12-22T01:23:23ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-07-011010.3389/feart.2022.919268919268Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, ChinaTong Shen0Tong Shen1Yunsheng Wang2Xun Zhao3Heng Liu4Xuyang Wu5Yapei Chu6Panpan Zhai7Yang Han8Henan University of Urban Construction, School of Civil Engineering, Pingdingshan, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaHenan University of Urban Construction, School of Civil Engineering, Pingdingshan, ChinaHenan University of Urban Construction, School of Civil Engineering, Pingdingshan, ChinaHenan University of Urban Construction, School of Civil Engineering, Pingdingshan, ChinaHenan University of Urban Construction, School of Civil Engineering, Pingdingshan, ChinaHenan University of Urban Construction, School of Civil Engineering, Pingdingshan, ChinaThe Jiaopenba landslide, which represents a typical large basalt high-speed remote landslide, is located in Emeishan City, southwestern Sichuan province, China. Based on the field investigation, the characteristics of the Jiaopenba landslide have been revealed. The Jiaopenba landslide occurred on the steep Mount Emei. Landslide materials with a volume of approximately 6.75×108 m3 slid down from a high position, forming a large-scale high-speed remote debris flow, with the farthest sliding distance of about 7.5 km. The landslide area is located in the west wing of the Emeishan anticline, which is cut by faults to form a monoclinal fault-block mountain. Although the shear outlet of the landslide is near the slope toe and does not have good free conditions, there are faults passing through the slope toe of the bedding slope of the fault hanging wall, the landslide is affected by the fault activity, and the integrity of the layered slope is poor. When the foot of the slope is empty, the fault zone is compressed and plastic extrusion, which leads to bedding slip of the slope rock mass and greatly weakens the interlayer bonding force. When coupled with long structural planes on both sides to form side crack planes, a large-scale inclined plate structure is formed. Under the action of a strong earthquake and other external forces, the rock mass near the fault can be damaged by tension, and a large-scale high-position landslide can be formed by the mode of compression-slip-tension fracture.https://www.frontiersin.org/articles/10.3389/feart.2022.919268/fullJiaopenba landslideEmeishan basaltearthquake-induced paleolandslidehigh-speed remote landslideformation mechanism |
| spellingShingle | Tong Shen Tong Shen Yunsheng Wang Xun Zhao Heng Liu Xuyang Wu Yapei Chu Panpan Zhai Yang Han Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China Frontiers in Earth Science Jiaopenba landslide Emeishan basalt earthquake-induced paleolandslide high-speed remote landslide formation mechanism |
| title | Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China |
| title_full | Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China |
| title_fullStr | Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China |
| title_full_unstemmed | Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China |
| title_short | Features and Formation Mechanism of the Jiaopenba Landslide, Southwestern Sichuan Province, China |
| title_sort | features and formation mechanism of the jiaopenba landslide southwestern sichuan province china |
| topic | Jiaopenba landslide Emeishan basalt earthquake-induced paleolandslide high-speed remote landslide formation mechanism |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.919268/full |
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