露天矿强风化地层边坡失稳机理及恒阻大变形锚索控制技术研究

IF 1.5 4区 工程技术 Q3 METALLURGY & METALLURGICAL ENGINEERING
Yang Xiaojie, Wang Jingxiang, Tao Zhigang, Liu Keyuan, Shen Fuxin
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引用次数: 0

摘要

为了研究斜坡的破坏机制,开发斜坡加固、监测和预警的综合方法,我们选择了大冶露天铜矿斜坡作为案例研究。首先,对工程地质条件进行了实地调查和分析,以阐明边坡的变形失稳机制。随后,建立了一个数值模型来评估不同锚固长度的恒阻大变形(CRLD)锚索的边坡加固效果。结果表明,增加恒阻大变形锚索的锚固长度可减少边坡总位移,提高边坡安全系数。斜坡内的轴向力分布被划分为三个不同的区域:集中区、过渡区和稳定区。这项研究深入探讨了斜坡变形机制、CRLD 锚索的锚固性能及其最佳锚固长度。根据研究结果,提出了斜坡加固、监测和预警的综合方案。实地应用结果表明,大冶露天铜矿边坡的稳定性有了明显改善。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Study on Slope Instability Mechanism and Constant Resistance Large Deformation Anchor Cable Control Technology in Strongly Weathered Strata of Open-Pit Mine

Study on Slope Instability Mechanism and Constant Resistance Large Deformation Anchor Cable Control Technology in Strongly Weathered Strata of Open-Pit Mine

To investigate the failure mechanisms of slopes and develop an integrated approach for slope reinforcement, monitoring, and early warning, the Daye open-pit copper mine slope was selected as the case study. Initially, field investigations and analyses of engineering geological conditions were performed to elucidate the deformation instability mechanisms of the slope. Subsequently, a numerical model was established to evaluate the slope reinforcement efficacy of constant resistance large deformation (CRLD) anchor cables with different anchorage lengths. The results demonstrate that increasing the anchorage length of CRLD anchor cables leads to a reduction in total slope displacement and an enhancement in the slope safety factor. The axial force distribution within the slope was segmented into three distinct zones: concentration area, transition area, and stable area. The optimal safety factor was achieved at an anchorage length of 20 m. This study provides insights into the slope deformation mechanisms, the anchorage performance of CRLD anchor cables, and their optimal anchorage lengths. Based on the findings, an integrated scheme for slope reinforcement, monitoring, and early warning is proposed. The field application results indicate significant improvements in the stability of the Daye open-pit copper mine slope.

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来源期刊
Mining, Metallurgy & Exploration
Mining, Metallurgy & Exploration Materials Science-Materials Chemistry
CiteScore
3.50
自引率
10.50%
发文量
177
期刊介绍: The aim of this international peer-reviewed journal of the Society for Mining, Metallurgy & Exploration (SME) is to provide a broad-based forum for the exchange of real-world and theoretical knowledge from academia, government and industry that is pertinent to mining, mineral/metallurgical processing, exploration and other fields served by the Society. The journal publishes high-quality original research publications, in-depth special review articles, reviews of state-of-the-art and innovative technologies and industry methodologies, communications of work of topical and emerging interest, and other works that enhance understanding on both the fundamental and practical levels.
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