Variability of permeability and seepage characteristics in soil landslides: a test case in the Three Gorges Reservoir Area, China
| Autor: | Qiang Xu, He Yang, Guo-Jun Cai, Huajin Li, Xianxuan Xiao, Minggao Tang, Andres Alonso-Rodriguez, Songlin Li |
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| Rok vydání: | 2019 |
| Předmět: |
Permeability (earth sciences)
010504 meteorology & atmospheric sciences 0211 other engineering and technologies Geotechnical engineering Landslide 02 engineering and technology China 01 natural sciences Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences Water Science and Technology Three gorges |
| Zdroj: | Water Supply. 19:2453-2463 |
| ISSN: | 1607-0798 1606-9749 |
| DOI: | 10.2166/ws.2019.128 |
| Popis: | This study presents assessments of the spatial variability of a soil landslide in the Three Gorges Reservoir Area in China. The results challenge the idea that variability of permeability within a landslide is secondary. Consequently, it cannot be assessed through single representative values. It was found that its variability spans two orders of magnitude, a consequence of it being influenced by both morphology and regolith properties. Identification of zones that display comparable behavior can be done through assessment of remote-sensing images collected by drones, as growth patterns of vegetation correspond well with zones that displayed similar permeability coefficients within the landslide body. Furthermore, extensive variability of permeability was caused by a diverse range of seepage mechanisms, namely pipe network flow, interface network seepage and pore water seepage. Thus, the hydraulic behavior of large landslide bodies is remarkably complex. |
| Databáze: | OpenAIRE |
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