巴鲁坝铜矿软岩巷道大变形破坏机理及支护措施

IF 1.2 4区 工程技术 Q3 MINING & MINERAL PROCESSING Archives of Mining Sciences Pub Date : 2023-07-20 DOI:10.24425/122458
A. Wu, Chen Shunman, Yi-ming Wang, Xun Chen
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引用次数: 6

摘要

为解决巴鲁巴铜矿大变形软岩巷道应力条件复杂的问题,在地质调查的基础上,深入分析了巷道变形特征和破坏模式。结合理论分析和数值模拟,提出了底板泥基+注浆锚索加固新技术。利用FLAC-3D软件建立了三维数值模拟模型,并对支护参数进行了优化。结果表明,u型钢架拱的光阵间距为0.8 m,注浆锚索的光阵间距为2.4 m。最后,在全软岩巷道进行了现场试验。工程实践表明,采用新的加固技术有效地控制了巴鲁巴铜矿软岩巷道的变形,可为类似工程提供一定的参考。
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Failure Mechanism and Supporting Measures for Large Deformation of Soft Rock Roadway in Baluba Copper Mine
To solve the problem of large deformation soft rock roadway with complicated stress condition in Baluba copper mine, the characteristics of roadway deformation and failure modes are analyzed deeply on the basis of geological survey. Combined with the theoretical analysis and numerical simulation, the new reinforcement technology with floor mudsill and grouting anchor cable is proposed. Moreover, the three dimension numerical simulation model is established by the software FLAC-3D, the support parameter is optimized by it. The results show that the optical array pitch of the U-steel shelf arch is 0.8 m, and the optical array pitch of the grouting anchor cable is 2.4 m. At last, the field experiments are done all over the soft rock roadway. Engineering practice shows that the deformation of soft rock roadway in Baluba copper mine is effectively controlled by adopting the new reinforcement technology, which can provide certain references for similar engineering.
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来源期刊
Archives of Mining Sciences
Archives of Mining Sciences 工程技术-矿业与矿物加工
CiteScore
2.40
自引率
16.70%
发文量
0
审稿时长
20 months
期刊介绍: Archives of Mining Sciences (AMS) is concerned with original research, new developments and case studies in mining sciences and energy, civil engineering and environmental engineering. The journal provides an international forum for the publication of high quality research results in: mining technologies, mineral processing, stability of mine workings, mining machine science, ventilation systems, rock mechanics, termodynamics, underground storage of oil and gas, mining and engineering geology, geotechnical engineering, tunnelling, design and construction of tunnels, design and construction on mining areas, mining geodesy, environmental protection in mining, revitalisation of postindustrial areas. Papers are welcomed on all relevant topics and especially on theoretical developments, analytical methods, numerical methods, rock testing, site investigation, and case studies.
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