东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (4): 97-105.DOI: 10.12068/j.issn.1005-3026.2025.20230272

• 资源与土木工程 • 上一篇    下一篇

露天矿山岩体质量精细化表征及边坡稳定性分析

孙东东1,2, 杨天鸿1,2, 刘飞跃1,3, 刘洋1,2   

  1. 1.东北大学 资源与土木工程学院,辽宁 沈阳 110819
    2.东北大学 深部金属矿山安全开采教育部重点实验室,辽宁 沈阳 110819
    3.安徽理工大学 安徽省关闭/废弃矿井资源开发利用工程研究中心,安徽 淮南 232001
  • 收稿日期:2023-09-21 出版日期:2025-04-15 发布日期:2025-07-01
  • 作者简介:孙东东(1991—),男,辽宁海城人,东北大学博士研究生
    杨天鸿(1968—),男,辽宁抚顺人,东北大学教授,博士生导师.
  • 基金资助:
    国家重点研发计划项目(2022YFC2903902);国家自然科学基金资助项目(U1903216)

Detailed Characterization of Rock Mass Quality and Slope Stability Analysis for Open-Pit Mines

Dong-dong SUN1,2, Tian-hong YANG1,2, Fei-yue LIU1,3, Yang LIU1,2   

  1. 1.School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China
    2.Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines,Northeastern University,Shenyang 110819,China
    3.Anhui Engineering Research Center of Exploitation and Utilization of Closed/Abandoned Mine Resources,Anhui University of Science and Technology,Huainan 232001,China. Corresponding author: YANG Tian-hong,E-mail: yangtianhong@mail. neu. edu. cn
  • Received:2023-09-21 Online:2025-04-15 Published:2025-07-01

摘要:

在进行边坡岩体质量评价和稳定性分析时,通常将岩体简化为均质材料,而天然岩体实际上具有非均质的特征.针对该问题,提出了一种考虑非均质性的岩体质量精细化表征及力学参数建模方法.以乌拉根铅锌矿为例,详细阐述了岩体力学参数精细化建模的流程.基于所建立的精细化力学参数模型,分别采用均匀和非均匀两种岩体力学参数对南帮进行稳定性分析,结果表明,采用非均匀力学参数进行计算可以更准确地反映露天边坡稳定性的真实情况.本研究所建立的精细化块体模型能够反映露天边坡中的薄弱及不稳定区域,可为边坡岩体质量评价、稳定性分析及支护施工设计等提供科学有效的解决途径.

关键词: 露天矿, 岩体质量, 精细化建模, 块体模型, 边坡稳定性分析

Abstract:

Rock masses are often simplified as homogeneous materials when evaluating rock mass quality and analyzing slope stability. However, natural rock masses actually exhibit heterogeneous characteristics. To address this issue, a detailed characterization of rock mass quality and a modeling method for mechanical parameters considering heterogeneitying are proposed. Taking the Wulagen lead-zinc mine as an example, the process of the detailed modeling method for rock mass mechanical parameters is elaborated in detail. Based on the established detailed mechanical parameter model, a stability analysis of the southern slope was conducted using both homogeneous and heterogeneous rock mass mechanical parameters. The results indicate that the calculations using heterogeneous mechanical parameters can more accurately reflect the true stability conditions of open-pit slopes. The detailed block model established in this study can identify weak and unstable areas in open-pit slopes, providing a scientific and effective solution for rock mass quality evaluation, stability analysis, and support design.

Key words: open-pit mine, rock mass quality, detailed modeling, block model, slope stability analysis

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