LATERITE AS A POTENTIAL SEEPAGE BARRIER FROM A KARST-DEPRESSION TAILINGS IMPOUNDMENT
| Autor: | Yong-Jun Tang, Hai-Yan Gao, Jun-Yao Luo, Zhe Ren, Kui Yang, Ze-Min Xu, Kun Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Goethite
Geochemistry Soil Science 020101 civil engineering 02 engineering and technology Atterberg limits Silt engineering.material 0201 civil engineering chemistry.chemical_compound Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Laterite Gibbsite Chlorite Water Science and Technology geography geography.geographical_feature_category 021001 nanoscience & nanotechnology Karst Tailings chemistry visual_art engineering visual_art.visual_art_medium 0210 nano-technology Geology |
| Zdroj: | Clays and Clay Minerals. 69:1-22 |
| ISSN: | 1552-8367 0009-8604 |
| DOI: | 10.1007/s42860-020-00103-8 |
| Popis: | In the absence of the necessary valley topography, karst depressions are sometimes used to construct conventional impoundments in order to contain tailings. Leakage is a primary concern for such impoundments. The purpose of the current study was to determine the characteristics and barrier performance of laterite mantling karst depressions, using, as an example, the Wujiwatang (WJWT) tailings impoundment, located in the Gejiu mining area, southwestern China. The geotechnical-hydrogeological properties, geochemistry, mineral compositions, and particle shapes of the laterite were investigated by geotechnical techniques, chemical analysis, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results showed that the laterite contained poorly sorted particles that covered a wide spectrum of grain sizes ( |
| Databáze: | OpenAIRE |
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