A new disposal method of ultra-fine tailings
Xiaofei LIU, Hanmin ZHOU, Xuan CUI, Shumao ZHANG
Dans les comptes rendus d’articles de la conférence: GeoVirtual 2020: 73rd Canadian Geotechnical ConferenceABSTRACT: The ultra-fine tailings have the characteristics of poor water permeability, long consolidation time, low mechanical strength, and are difficult to dissipate excess pore water pressure. These characteristics lead to problems of dam construction difficulty, poor drainage of embankment, high water content of deposited tailings and low dam bearing capacity. This paper introduces a new method of chemical pretreatment combined with physical treatment of ultra-fine tailings. By adding flocculant, the fine particles in tailings can be combined into coarse particles to accelerate the setting speed and pre dehydrate the ultra-fine tailings. Fill the pre dehydrated tailings into different size geofabriform bag made of geotextile. Then apply low frequency load on the bag to accelerate dewatering and consolidation of ultra-fine tailings in the bag. The cost of this method is acceptable. Engineering application indicated that this method has easy site application and the ultra-fine tailings can be disposed in situ.
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Citer cet article:
LIU, Xiaofei, ZHOU, Hanmin, CUI, Xuan, ZHANG, Shumao (2020) A new disposal method of ultra-fine tailings in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.
@article{LIU_GEO2020_173,
author = Xiaofei LIU, Hanmin ZHOU, Xuan CUI, Shumao ZHANG,
title = A new disposal method of ultra-fine tailings ,
year = 2020
}
title = A new disposal method of ultra-fine tailings ,
year = 2020
}