Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China
Chemical and physical clogging frequently occur in tailings dam. The clogging seriously influences the safety of tailings dam. This paper conducts several column experiments to analyse the physical and chemical clogging of the Lixi tailings dam in China. The experiment results of chemical clogging s...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2016/8147845 |
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| author | Zengguang Xu Xuemin Yang Junrui Chai Yuan Qin Yanlong Li |
| author_facet | Zengguang Xu Xuemin Yang Junrui Chai Yuan Qin Yanlong Li |
| author_sort | Zengguang Xu |
| collection | DOAJ |
| description | Chemical and physical clogging frequently occur in tailings dam. The clogging seriously influences the safety of tailings dam. This paper conducts several column experiments to analyse the physical and chemical clogging of the Lixi tailings dam in China. The experiment results of chemical clogging show that average flow velocity and permeability decrease by approximately 50% to 60%. The experiment results of physical clogging show that these values decrease by approximately 50% to 70%. For physical clogging, a higher hydraulic gradient could result in a larger extent of decrease in the permeability coefficient. The permeability did not decrease when the hydraulic gradient was equal to 0.125. The results of chemical clogging column experiments show that ferrous ion solution concentration is disproportional to the permeability coefficient. This scenario can be attributed to the extremely small concentration gradients. |
| format | Article |
| id | doaj-art-93bf342d9bca46daa0b195301dd5bd34 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-93bf342d9bca46daa0b195301dd5bd342025-02-03T06:08:25ZengWileyJournal of Chemistry2090-90632090-90712016-01-01201610.1155/2016/81478458147845Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, ChinaZengguang Xu0Xuemin Yang1Junrui Chai2Yuan Qin3Yanlong Li4State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaChemical and physical clogging frequently occur in tailings dam. The clogging seriously influences the safety of tailings dam. This paper conducts several column experiments to analyse the physical and chemical clogging of the Lixi tailings dam in China. The experiment results of chemical clogging show that average flow velocity and permeability decrease by approximately 50% to 60%. The experiment results of physical clogging show that these values decrease by approximately 50% to 70%. For physical clogging, a higher hydraulic gradient could result in a larger extent of decrease in the permeability coefficient. The permeability did not decrease when the hydraulic gradient was equal to 0.125. The results of chemical clogging column experiments show that ferrous ion solution concentration is disproportional to the permeability coefficient. This scenario can be attributed to the extremely small concentration gradients.http://dx.doi.org/10.1155/2016/8147845 |
| spellingShingle | Zengguang Xu Xuemin Yang Junrui Chai Yuan Qin Yanlong Li Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China Journal of Chemistry |
| title | Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China |
| title_full | Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China |
| title_fullStr | Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China |
| title_full_unstemmed | Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China |
| title_short | Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China |
| title_sort | permeability characteristics of tailings considering chemical and physical clogging in lixi tailings dam china |
| url | http://dx.doi.org/10.1155/2016/8147845 |
| work_keys_str_mv | AT zengguangxu permeabilitycharacteristicsoftailingsconsideringchemicalandphysicalclogginginlixitailingsdamchina AT xueminyang permeabilitycharacteristicsoftailingsconsideringchemicalandphysicalclogginginlixitailingsdamchina AT junruichai permeabilitycharacteristicsoftailingsconsideringchemicalandphysicalclogginginlixitailingsdamchina AT yuanqin permeabilitycharacteristicsoftailingsconsideringchemicalandphysicalclogginginlixitailingsdamchina AT yanlongli permeabilitycharacteristicsoftailingsconsideringchemicalandphysicalclogginginlixitailingsdamchina |