| Citation: |
Ning Zhong, Xian-bing Zhang, Chang-bao Guo, Zhen Yang, Hao Yu, Rui-an Wu, Yang Wang, Hai-bing Li, 2024. Geological risk assessment of traffic engineering construction among 7.0‒8.5 magnitude earthquake areas: Practice from the Sichuan-Tibet transport corridor in the eastern Tibetan Plateau, China Geology, 7, 605-629. doi: 10.31035/cg2023055
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Geological risk assessment of traffic engineering construction among 7.0‒8.5 magnitude earthquake areas: Practice from the Sichuan-Tibet transport corridor in the eastern Tibetan Plateau
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Abstract
At least 13 active fault zones have developed in the Ya’an-Linzhi section of the Sichuan-Tibet transport corridor, and there have been undergone 17 MS
$\geqslant $ $\geqslant $ -
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References
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Geological Review, 63(3), 719–738. doi: 10.16509/j.georeview.2017.03.013. Zhong N, Yang Z, Zhang XB, Ding YY, Wu RA, Wang Y, Guo CB, Li HB. 2022b. Evidence of Holocene activity and paleoseismic records in the central section of Bangda fault in Nujiang fault zone. Geological Review, 68(6), 2021–2032. doi: 10.16509/j.georeview.2022.08.131. Zhong N, Song X, Xu H, Jiang H. 2017b. Influence of a tectonically active mountain belt on its foreland basin: evidence from detrital zircon dating of bedrocks and sediments from the eastern Tibetan Plateau and Sichuan basin, SW China. Journal of Asian Earth Sciences, 146, 251–264. doi: 10.1016/j.jseaes.2017.05.035. Zhong N. 2017. Earthquake and Provenance Analysis of the Lacustrine Sediments in the Upper Reaches of the Min River During the Late Pleistocene. Beijing, Institute of Geology China Earthquake Administration, Ph. D thesis, 1–181 (in Chinese with English abstract). Zhou CJ, Wu ZH, Zhang KQ, Li JC, Jiang Y, Tian TT, Liu YH, Huang XJ. 2015. New chronological constraint on the co-seismic surface rupture segments associated with the Litang fault. Seismology and Geology, 37(2), 455–467. doi: 10.3969/j.issn.0253-4967.2015.02.009. Zhou RJ, Chen GX, Li Y, Zhou ZH, Gong Y, He YL, Li XG. 2005. Research on active faults in Litang-Batang region, western Sichuan province, and the seismogenic structures of the 1989 Batang MS 6.7 earthquake SW arm. Eismology and Geology, (1), 31–43. Zhou RJ, Lei JC, Li XG, Yang T. 2000. Geology and geomorphic evidence for activity of Daduhe Fault since late Quaternary∥CHEN Yuntai (ed). Collection of Essays for the 8th Academic Conference of the Seismological Society of China. Beijing Seismological Press, 54 (in Chinese). Zhou RJ, Ye YQ, Li Y, Li XG, He YL, Ge TY. 2007. Late Quaternary active of the Shawan of the Litang faults. Quaternary Sciences, 27(1), 45–53. Zhou RJ. 2014. 1∶50000 banded active fault mapping of Litang-Yidun fault. Sichuan Earthquake Administration,1–72. 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Ning Zhong, Xian-bing Zhang, Chang-bao Guo, Zhen Yang, Hao Yu, Rui-an Wu, Yang Wang, Hai-bing Li, 2024. Geological risk assessment of traffic engineering construction among 7.0‒8.5 magnitude earthquake areas: Practice from the Sichuan-Tibet transport corridor in the eastern Tibetan Plateau, China Geology, 7, 605-629. doi: 10.31035/cg2023055
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Figure 1.
Distribution map showing major active faults and earthquake epicenters in the Ya’an-Linzhi section of the Sichuan-Tibet transport corridor.
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Figure 2.
a‒Fracture outcropped in the Shenxigou village, about 3.2 m uplifted road with the about 5 m dextral offset, which generated in the 2008 Wenchuan MS 8.0 earthquake (Li HB et al., 2008); b‒ photo of Beichuan county showing the damage caused by the 2008 Wechuan MS 8.0 earthquake (Tang C and Westen CJV, 2018) ; c‒a lots of landslide and barrier lake at Qingchuan county induced by the 2008 Wenchuan MS 8.0 earthquake (Tang C and Westen CJV, 2018); d‒a bridge was destroyed by the 2008 Wenchuan MS 8.0 earthquake near Yingxiu Town (Tang C and Westen CJV, 2018); e‒an arc tissue at Lingguan town generated in the 2013 Lushan MS 7.0 earthquake around the rural building (Hong HC et al., 2013); f‒crushing damage of buildings at Moxi town were destroyed by the 2022 Luding MS 6.9 earthquake.
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Figure 3.
a‒Distribution of MS≥7.0 earthquakes since 2001 in the Bayan Har block and its periphery; b‒map showing the spatial geometric distribution and historical earthquakes in the Selaha-Kangding segment of the Xianshuihe fault zone and the isoseismal distribution of the 1955 Zheduotang MS 7.5 earthquake (after Tang RC and Han WB, 1993).
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Figure 4.
Spatial geometric distribution of the Zheduotang fault, and surface ruptures caused by 1955 Zheduotang Ms 7.5 earthquake.
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Figure 5.
a‒Distribution map showing major active faults and internal deformation pattern of subblocks in northwestern Sichuan (after Gao SP, 2021); b‒map showing the spatial geometric distribution and historical earthquakes in the Litang fault and the isoseismal distribution of the 1948 Litang earthquake of MS 71/4 (after Tang RC and Han WB, 1993).
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Figure 6.
Surface ruptures caused by historical earthquakes in the Litang fault zone (a‒d), and the spatial geometric distribution of the Maoyaba fault (e).
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Figure 7.
Paleoearthquake events in the northern boundary fault of the Maoyaba Basin, the Litang fault, and the Kangga-Dewu fault since the Holocene.
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Figure 8.
Map of the spatial geometric distribution and historical earthquakes in the Batang fault zone and the isoseismal distribution of the 1870 Batang Ms 71/4 earthquake (after Tang RC and Han WB, 1993).
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Figure 9.
a‒Characteristics of typical seismic landslides in the Batang fault zone (modified from Yang ZH et al., 2021); b‒Longba landslide; c‒Langduoercun landslide; d, e‒Fault profile at a tunnel of the Lala mountain tunnel in Batang; f, g‒deformation of seismogenic SSDS recorded by lacustrine deposits at one portal of the Huangcaoping No. 1 Tunnel; h‒Huangcaoping paleoearthquake trench (after Gao SP, 2021).
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Figure 10.
a‒GPS velocity fields of the horizontal crustal motion in Chinese continent in the relatively stable Eurasian Plate and its surrounding areas (after Wang M and Shen ZK, 2020); b‒map of the geometric distribution in the Jiali-Chayu and Lulang-Yigong fault zones, the historical earthquakes in the EHS, and the isoseismal distribution of the 1950 Chayu MS 8.5 earthquake (after You ZL et al., 1991).
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Figure 11.
a‒Map of the spatial geometric distribution and offset landform characteristics in the middle segment of the Jiali-Chayu fault zone; b‒d‒maps of the drainage offset landforms in the Yigong and Guxiang lakes; c‒a fault trough at Tongjia Village, Yigong; e‒fault scarp in Gongde Village, Yigong; (f)‒landforms near the Tongmai bridge (afte rSong J et al., 2013); g‒h‒maps of the deformation structures of typical soft sediments in lacustrine deposits in the Jialongba and Bitong villages.
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Figure 12.
a‒b‒Fault scarps developing in Zhaxigang Village, Lulang; c‒d‒Earthquake-induced soft sediment deformation structures in lacustrine deposits in the Sicun (after Wang HY et al., 2021) and Dongjiu villages, Lulang (this study); e‒f‒Sicun paleoearthquake trench (after Xie C, 2018).
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Figure 13.
Current tectonic deformation zoning of the Tibet Plateau (Li HB et al., 2021).