Study on Karst Features and its Influence on the Project of Wudongde Hydropower Station of Jinsha River

Abstract:

Wudongde canyon where the hydropower station will be built is deeply cut by the river with the height of more than 800m. Three type of rocks (sedimentary, metamorphic and volcanic rocks) outcrop at the project area. The complexity of the lithology of the Mesoproterozoic Huili Group Luoxue Formation (the limestone, marble, dolomite, marble lithification dolomite, quartzite and phyllite parallel to each other) combined with the complexity metamorphic process (including marble lithification, dolomization and sericitization) and the multiphase tectonic movement and multiphase transgressive period and regressive period formed the Wudongde canyon unique hydro-geological structures. The complexity of the geological conditions (complex lithology, tectonic structures, Neotectonics movement) combined with the dry-hot canyon meteorological conditions formed the complexity of the Wudongde caynon Karst features. The different karst types have developed such as the karst fissures, karst holes, horizontal caves and karst oblique caves. Based on the detailed geological data, the karst and hydro-geology features and the karst controlling factors have been systematically analyzed, meanwhile the karst influence on the project have been evaluated and the suggested measures have been taken to avoid the disadvantage conditions. The experience of Wudongde Hydropower station karst research can be as reference for other similar projects.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 638-643
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.638
• Online since: December 2014
• Authors: Tuan Le Wang, Sheng Sheng Ye, Wen Zhong Hao, Chong Ping Liu
• Keywords: Dry-Hot Canyon, Influence on the Project, Karst Features, Wudongde Hydropower Station

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