Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2023, Vol. 33 ›› Issue (1): 32-38.DOI: 10.16046/j.cnki.issn2096-5680.2023.01.006

• Geotechnical Engineering Column • Previous Articles     Next Articles

Seepage Stability Analysis of Different Dam Forms in Tailings Pond

JIANG Shi-lei1, HUANG Wei2, ZHAO Feng-qi1, ZUO Shuai1, JI Hong1   

  1. 1. ZhongKan Metallurgical Investinggation Desion&Reseach Institute CO., LTD., 071000, Baoding, Hebei, China;
    2. School of Infrastructure Engineering, Nanchang University, 330031, Nanchang, Jiangxi, China
  • Received:2022-05-07 Revised:2022-07-20 Published:2023-10-26

尾矿库不同坝体形态渗流稳定性分析

姜士磊1, 黄伟2, 赵凤岐1, 左帅1, 冀红1   

  1. 1.中勘冶金勘察设计研究院有限责任公司,河北省保定市东风中路1285号 071000;
    2.南昌大学工程建设学院,江西省南昌市红谷滩区学府大道999号 330031
  • 作者简介:姜士磊(1987-),男,河北邯郸人,工程师,主要研究方向为岩土工程。Email:kcjslei@163.com
  • 基金资助:
    国家自然科学基金项目(51909115);江西省水利厅科技项目(202123YBKT04)

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Abstract: In order to research the influence of different dam shapes on the seepage stability of tailings DAMS and analyze the safe translation distance of upstream tailings dam sub-dams, taking a tailings in Xinjiang Province as the engineering example, the saturation-unsaturated flow Van Genuchten model of Geo-Studio software Geo-Seep /W seepage analysis module was used to analyze the seepage field of tailings dam. By simulating and analyzing the seepage stability of tailings under various working conditions and comparing with the investigation results, the calculated results of seepage flow agree with the survey data. Moreover, the seepage flow of different dam body forms is compared and analyzed. When the shape of dam body changes, the relative position of the tailings accumulation material changes, which has a great impact on the seepage flow.The results show that the upstream translation distance of tailings dam at 940.0m elevation should not exceed 80m, otherwise, drainage system should be added to reduce the infiltration line at the foot of slope.

Key words: saturated-unsaturated flow, Van Genuchten model, tailings, seepage analysis

摘要： 为研究不同坝体形态对尾矿坝渗流稳定性的影响,分析上游式尾矿坝子坝向上游平移的安全距离,以新疆某尾矿库为工程实例,采用Geo-Studio软件Geo-Seep/W渗流分析模块饱和-非饱和流Van Genuchten模型进行尾矿坝渗流场分析。通过模拟分析尾矿库现状各工况下渗流稳定性,并与勘察成果进行对比,渗流计算结果与勘察资料相吻合。同时,对不同坝体形态的渗流进行对比分析,当坝体形态发生改变时,尾矿堆积材料相对位置发生改变,从而对渗流产生较大影响。研究结果表明:尾矿堆积坝标高在940.0m时,向上游平移距离不宜超过80m,否则应增设排水系统,以降低坡脚位置浸润线。

关键词: 饱和-非饱和流, Van Genuchten模型, 尾矿库, 渗流分析

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