露天坑排尾边坡与地下巷道稳定性分析

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英文篇名：Stability Analysis of Slope and Underground Roadway after Tailings Dumping in Open Pit 作者：朱志根 英文作者：Zhu Zhigen;CINF Engineering Co.,Ltd.; 关键词：露天矿坑 ; 地下工程 ; 干排尾砂 ; 边坡稳定性 ; 巷道稳定性 英文关键词：Open-pit mine;;Underground engineering;;Dry tailing;;Slope stability;;Roadway stability 中文刊名：JSKS 英文刊名：Metal Mine 机构：长沙有色冶金设计研究院有限公司; 出版日期：2018-08-15 出版单位：金属矿山 年：2018 期：No.506 基金：国家重点研发计划项目(编号:2016YFC0801606) 语种：中文; 页：JSKS201808009 页数：5 CN：08 ISSN：34-1055/TD 分类号：46-50

摘要

以矿山露天坑和地下工程实际情况为工程背景,运用Midas-Flac3d耦合建模方法,建立了矿区采坑和地下巷道三维数值模型,采用极限平衡分析法和有限差分数值分析法,开展了露天坑不同的干排尾砂高度工况下边坡和地下巷道的稳定性分析。结果表明:随着干排高度的增加,边坡安全系数逐渐增加;干排混合料起到加固坡脚和边坡挡土墙的效果;露天坑干排高度对下方巷道围岩位移和应力的影响较小;巷道围岩整体上处于弹性状态,稳定性较好,巷道局部小范围出现塑性区,应加强局部加固。并提出了露天坑和边坡面的防渗措施,为矿山露天坑和尾矿排放综合治理提供借鉴和参考。
        Taking open pit and underground engineering of a mine as background,the three-dimensional numerical model of mining pit and underground roadway is established with the Midas-Flac3d coupling modeling method. The stability analysis on slope and underground roadways under different tailings backfilling height in open pit are carried out with the method of limit equilibrium analysis and finite difference numerical analysis. The results show that the safety factor of slopes increases with the increase of dry tailings dumping height,and the dry tailing mixture has the effect on strengthening the slope foot and the retaining wall of slope;the dry tailing dumpling height of the open pit has little influence on the displacement and stress of the surrounding rock in underground roadways;The surrounding rock of roadway is in an elastic state on the whole with high stability. The plastic zone appears in the local roadway at small scale,and so it is necessary to strengthen the local place. The anti-seepage measures for open pit and side slopes are also put forward,which provides reference for comprehensive treatment of open pit and tailings dumping in mines.

引文

[1]任思潼,顾晓薇,付煜,等.露天边帮下紧邻尾矿库采空区地表充填治理方法[J].东北大学学报:自然科学版,2018,39(5):722-725.Ren Sitong,Gu Xiaowei,Fu Yu,et al.Mined-out area treatment method by surface filling under open-pit slope adjacent to tailing reservoi[J].Journal of Northeastern University:Natural Science,2018,39(5):722-725.
    [2]于广明,宋传旺,潘永战,等.尾矿坝安全研究的国外新进展及我国的现状和发展态势[J].岩石力学与工程学报,2014,33(S1):3238-3248.Yu Guangming,Song Chuanwang,Pan Yongzhan,et al.Review of new progress in tailing dam safety in foreign research and current state with development in China[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(S1):3238-3248.
    [3]张力霆.尾矿库溃坝研究综述[J].水利学报,2013,44(5):594-600.Zhang Liting.Summary on the dam-break of tailing pond[J].Journal of Hydraulic Engineering,2013,44(5):594-600.
    [4]张亚民,马凤山,徐嘉谟,等.高应力区露天转地下开采岩体移动规律[J].岩土力学,2011(S1):590-595.Zhang Yamin,Ma Fengshan,Xu Jiangmo,et al.Deformation laws of rock mass due to transform from open-pit to underground mining in high stress area[J].Rock and Soil Mechanics,2011(S1):590-595.
    [5]代永新,赵蒙生.滑坡涌浪预测在采矿坑改建尾矿库工程中的应用[J].金属矿山,2010(7):143-145.Dai Yongxin,Zhao Mengsheng.Application of landslide surge prediction in conversion of mining pit into tailings reservoir[J].Metal Mine,2010(7):143-145.
    [6]张艳博,李占金,甘德清.程家沟铁矿露天坑排尾后地下采场参数的研究[J].金属矿山,2008(5):15-19.Zhang Yanbo,Li Zhanjin,Gan Deqing.Study on underground stope parameters after tailings discharge into open pit in Chengjiagou Iron Mine[J].Metal Mine,2008(5):15-19.
    [7]代永新.露天采矿改建尾矿库关键技术探讨[J].金属矿山,2012(1):58-62Dai Yongxin.Discussion on key technologies of tailings pond reconstruction from open pi[tJ].Metal Mine,2012(1):58-62
    [8]陈佳耀,史秀志,周健,等.干堆排尾对露天坑坑下采场稳定性的影响[J].中南大学学报:自然科学版,2017,48(10):2723-2731.Chen Jiayao,Shi Xiuzhi,Zhou Jian,et al.Influence on underground mining stability of stope during stacking dry stacked Gangue in open-pit[J].Journal of Central South University:Science and Technology,2017,48(10):2723-2731.