Centrifuge Modeling of Deposition and Consolidation of Fine-Grained Mine Tailings
Centrifuge Modeling of Deposition and Consolidation of Fine-Grained Mine Tailings
复制标题
细粒尾矿沉积和固结的离心机模型
DOI：
10.1061/9780784413272.313
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发表时间：
2014
影响因子：
1.6
通讯作者：
J. Ubilla
中科院分区：
文献类型：
--
作者：
N. Antonaki;I. Sasanakul;T. Abdoun;M. V. Sanin;H. Puebla;J. Ubilla
采矿活动产生越来越多的废物，通常称为尾矿。由于在矿物提取过程中大量使用水，该材料通常具有50%至100%的含水量。颗粒大小从沙子到淤泥大小不等。尾矿最常见的是分层沉积，并在其自身重量下固结。在这项研究中，这个过程是用土工离心机模拟。通过对一个约25 m高的尾矿库的固结特性进行模拟，可以对该尾矿库在抽水含水量下的5 ~ 6层进行固结特性评价。建立并试验了一种新的土体沉降监测技术。固结过程中的孔隙压力消散和剪切波速度也进行了测量。研究结果为材料的原位行为评价和表征提供了有用的数据。
Mining activity produces increasingly large amounts of waste, usually referred to as mine tailings. The material normally has water content that ranges from 50 to 100%, due to extensive use of water during the mineral extraction process. Particle size ranges from sand to silt size. The tailings are most commonly deposited in layers and left to consolidate under their own weight. In this study, this process was modeled using a geotechnical centrifuge. Centrifuge modeling allows the evaluation of the consolidation behavior of an approximately 25 m high tailings impoundment deposited in five to six layers at the pumping water content. A new technique of monitoring settlement within the soil profile was established and tested. Pore pressure dissipation and shear wave velocity were also measured during consolidation. Results provide useful data for the assessment of the in situ behavior and the characterization of the material.