The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet
The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure...
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| Autor*in: |
XIN Peng [verfasserIn] WANG Tao [verfasserIn] LIU Jiamei [verfasserIn] LIU Feng [verfasserIn] DU Jianjun [verfasserIn] ZHAO Jianlei [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Chinesisch |
| Erschienen: |
2022 |
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| Übergeordnetes Werk: |
In: Dizhi lixue xuebao - Institute of Geomechanics, Chinese Academy of Geological Sciences, 2023, 28(2022), 6, Seite 1012-1023 |
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| Übergeordnetes Werk: |
volume:28 ; year:2022 ; number:6 ; pages:1012-1023 |
| Links: |
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| DOI / URN: |
10.12090/j.issn.1006-6616.2022072 |
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| Katalog-ID: |
DOAJ080497675 |
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| 520 | |a The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. | ||
| 650 | 4 | |a geological disaster | |
| 650 | 4 | |a yigong landslide | |
| 650 | 4 | |a source area | |
| 650 | 4 | |a imbricated nappe structure | |
| 650 | 4 | |a fault | |
| 650 | 4 | |a sliding mode | |
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10.12090/j.issn.1006-6616.2022072 doi (DE-627)DOAJ080497675 (DE-599)DOAJ44d32fa438e04ffda364c9610f593c51 DE-627 ger DE-627 rakwb chi QE1-996.5 XIN Peng verfasserin aut The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. geological disaster yigong landslide source area imbricated nappe structure fault sliding mode Geology WANG Tao verfasserin aut LIU Jiamei verfasserin aut LIU Feng verfasserin aut DU Jianjun verfasserin aut ZHAO Jianlei verfasserin aut In Dizhi lixue xuebao Institute of Geomechanics, Chinese Academy of Geological Sciences, 2023 28(2022), 6, Seite 1012-1023 (DE-627)573746419 (DE-600)2441255-7 10066616 nnns volume:28 year:2022 number:6 pages:1012-1023 https://doi.org/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/article/44d32fa438e04ffda364c9610f593c51 kostenfrei https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/toc/1006-6616 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 28 2022 6 1012-1023 |
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10.12090/j.issn.1006-6616.2022072 doi (DE-627)DOAJ080497675 (DE-599)DOAJ44d32fa438e04ffda364c9610f593c51 DE-627 ger DE-627 rakwb chi QE1-996.5 XIN Peng verfasserin aut The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. geological disaster yigong landslide source area imbricated nappe structure fault sliding mode Geology WANG Tao verfasserin aut LIU Jiamei verfasserin aut LIU Feng verfasserin aut DU Jianjun verfasserin aut ZHAO Jianlei verfasserin aut In Dizhi lixue xuebao Institute of Geomechanics, Chinese Academy of Geological Sciences, 2023 28(2022), 6, Seite 1012-1023 (DE-627)573746419 (DE-600)2441255-7 10066616 nnns volume:28 year:2022 number:6 pages:1012-1023 https://doi.org/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/article/44d32fa438e04ffda364c9610f593c51 kostenfrei https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/toc/1006-6616 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 28 2022 6 1012-1023 |
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10.12090/j.issn.1006-6616.2022072 doi (DE-627)DOAJ080497675 (DE-599)DOAJ44d32fa438e04ffda364c9610f593c51 DE-627 ger DE-627 rakwb chi QE1-996.5 XIN Peng verfasserin aut The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. geological disaster yigong landslide source area imbricated nappe structure fault sliding mode Geology WANG Tao verfasserin aut LIU Jiamei verfasserin aut LIU Feng verfasserin aut DU Jianjun verfasserin aut ZHAO Jianlei verfasserin aut In Dizhi lixue xuebao Institute of Geomechanics, Chinese Academy of Geological Sciences, 2023 28(2022), 6, Seite 1012-1023 (DE-627)573746419 (DE-600)2441255-7 10066616 nnns volume:28 year:2022 number:6 pages:1012-1023 https://doi.org/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/article/44d32fa438e04ffda364c9610f593c51 kostenfrei https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/toc/1006-6616 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 28 2022 6 1012-1023 |
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10.12090/j.issn.1006-6616.2022072 doi (DE-627)DOAJ080497675 (DE-599)DOAJ44d32fa438e04ffda364c9610f593c51 DE-627 ger DE-627 rakwb chi QE1-996.5 XIN Peng verfasserin aut The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. geological disaster yigong landslide source area imbricated nappe structure fault sliding mode Geology WANG Tao verfasserin aut LIU Jiamei verfasserin aut LIU Feng verfasserin aut DU Jianjun verfasserin aut ZHAO Jianlei verfasserin aut In Dizhi lixue xuebao Institute of Geomechanics, Chinese Academy of Geological Sciences, 2023 28(2022), 6, Seite 1012-1023 (DE-627)573746419 (DE-600)2441255-7 10066616 nnns volume:28 year:2022 number:6 pages:1012-1023 https://doi.org/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/article/44d32fa438e04ffda364c9610f593c51 kostenfrei https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/toc/1006-6616 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 28 2022 6 1012-1023 |
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10.12090/j.issn.1006-6616.2022072 doi (DE-627)DOAJ080497675 (DE-599)DOAJ44d32fa438e04ffda364c9610f593c51 DE-627 ger DE-627 rakwb chi QE1-996.5 XIN Peng verfasserin aut The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. geological disaster yigong landslide source area imbricated nappe structure fault sliding mode Geology WANG Tao verfasserin aut LIU Jiamei verfasserin aut LIU Feng verfasserin aut DU Jianjun verfasserin aut ZHAO Jianlei verfasserin aut In Dizhi lixue xuebao Institute of Geomechanics, Chinese Academy of Geological Sciences, 2023 28(2022), 6, Seite 1012-1023 (DE-627)573746419 (DE-600)2441255-7 10066616 nnns volume:28 year:2022 number:6 pages:1012-1023 https://doi.org/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/article/44d32fa438e04ffda364c9610f593c51 kostenfrei https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2022072 kostenfrei https://doaj.org/toc/1006-6616 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR 28 2022 6 1012-1023 |
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In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. 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The geological structure and sliding mode of the slopes in the Yigong landslide source area, Tibet |
| abstract |
The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. |
| abstractGer |
The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. |
| abstract_unstemmed |
The unstable slopes of BH01, BH02, and BH03 in the Yigong landslide source area in Tibet threaten the safety of major engineering facilities downstream. In order to prevent and control the disaster risk caused by the high-elevation sliding of blocks, it is urgent to analyze the geological structure of the slope in the above-mentioned source area and their deformation trends. Based on the Pleiades digital elevation model with a precision of 2 m and its topographical shadow, this paper draws up evidence from three aspects: quantitative geomorphology, geological structure, and landslide science. In addition, it is preliminarily determined that the source area of the Yigong landslide has four secondary slope units, including the cuesta in the front imbricated thrust-fault zone, the block in the thrust-fault zone, the block in the strike-slip fault zone, and the NE-trending rift zone. There are two primary control structural planes in the slope, dipping southeast and southwest, respectively. The geological survey of the line has confirmed that the above two groups of structural planes are related to thrust faults and strike-slip faults in the imbricated nappe. The NE-trending rift crosscutting the ridge may be related to the recent EW-extensional deformation of the nappe. With the above-mentioned geological structures, the slopes in the Yigong landslide source area show multi-stage and multi-phase deep sliding along the NE-trending rift zone and have the creep-tension-shear sliding mechanism with rock landslide. According to the extension depth of the tensile fractures in the source area, the BH02 block has the potential risk of accelerated slippage. Moreover, the BH03 block is also unstable. |
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