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Bulletin of Engineering Geology and the Environment
Erschienen in: Bulletin of Engineering Geology and the Environment 2/2009

01.05.2009 | Original Paper

Significance of outward dipping strata in argillaceous limestones in the area of the Three Gorges reservoir, China

verfasst von: Shengwen Qi, Zhong Qi Yue, Chunling Liu, Yuande Zhou

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 2/2009

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Abstract

Re-location of the town of Fengjie due to the impounding of the Three Gorges reservoir involved some significant excavations into the valley slopes. It was noted that the mainly calcareous strata in gullies had a northerly dip while in the excavation the dips were sub-horizontal and even southerly, towards the Yangtze River. The paper discusses the process which leads to this change in dip in the superficial strata. This is particularly significant where orthogonal sub-vertical discontinuities are present such that gravitational effects result in blocks toppling out of the free face.
Vorheriger Artikel Rainfall-triggered debris flows following the Wenchuan earthquake
Nächster Artikel The 17 February 2006 rock slide-debris avalanche at Guinsaugon Philippines: a synthesis

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Literatur
Hawkins A, McDonald C (1992) Decalcification and residual shear strength reduction in Fuller’s Earth Clay. Géotechnique 42:453–464
Hawkins A, Lawrence MS, Privett KD (1988) Implications of weathering on the engineering properties of the Fuller’s earth formation. Géotechnique 38:517–532CrossRef
Li JJ, Xie SY, Kuang MS (2001) Geomorphic Evolution of the Yangtze Gorges and the time of their formation. Geomorphology 41:125–135CrossRef
Liu HY (2007) Research on the rock mechanics weakening and the karst erosion of Marlite of the Badong Formation in the Three Gorges reservoir area. PhD Dissertation. Institute of Geology and Geophysics, Chinese Academy of Sciences (in Chinese with English abstract)
Qi SW, Yue ZQ, Wu FQ, Chang ZH (2009) Deep weathering of a group of thick argillaceous limestone rocks near Three Gorges reservoir, Central China. Int J Rock Mech Min Sci (accepted for publication)
Team 107 of Geological Bureau of Sichuan province (1980) Report of regional geology investigation of Wanxian county, Fengjie county and Zhongxian county, People’s Republic of China (1:200,000)
Zhang JG (2004) Variation of mechanical property of Marlite in process of karstification and weathering in Three Gorges region. Chin J Rock Mech Eng 23(7):1073–1077 (in Chinese with English abstract)
Zhang JG (2005) Karst process and its impact on construction stability of the slope terrain within muddy limestone in the Three Gorges region. Acta Geosci Sin 26(6):565–569 (in Chinese with English abstract)
Zhang JG, Qu YX (2005) The dissolution process with microstructure variation in Marlite in Three Gorges reservoir area. Chin J Eng Geol 13(1):12–17 (in Chinese with English abstract)
Metadaten
Titel
Significance of outward dipping strata in argillaceous limestones in the area of the Three Gorges reservoir, China
verfasst von
Shengwen Qi
Zhong Qi Yue
Chunling Liu
Yuande Zhou
Publikationsdatum
01.05.2009
Verlag
Springer-Verlag
Erschienen in
Bulletin of Engineering Geology and the Environment / Ausgabe 2/2009
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-009-0206-1

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