Quantifying the influence of structure, rock mass strength and mining development of drives in squeezing ground

IF 1.8 Q3 MINING & MINERAL PROCESSING

Mining Technology-Transactions of the Institutions of Mining and Metallurgy Pub Date : 2018-10-02 DOI:10.1080/14749009.2017.1409983

E. Karampinos, J. Hadjigeorgiou

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引用次数: 3

Abstract

ABSTRACT Squeezing ground conditions are observed in several underground hard rock mines characterized by preferential structural features. Mining drives developed in squeezing ground conditions report very large deformations over their working life. This paper reports on a long term study of the observed very large deformations in mining drives at the LaRonde and Lapa mines in north-west Quebec, Canada. This analysis followed a comprehensive instrumentation, rock mass characterization and monitoring programme at the two mines. Drive convergence measurements were analysed and employed to quantify the role of structure, strength and mining development in squeezing ground conditions. The observed levels of drive convergence were considerably higher than previously reported in other hard rock mines. This paper reports on a quantitative interpretation of the rock mass, stress and design parameters that control the degree of squeezing. These observations have significant influence for the design and mitigation of mining drives in squeezing ground conditions.

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量化挤压地掘进对结构、岩体强度和开采发展的影响

摘要对几个具有优先结构特征的地下硬岩矿山进行了挤压地表观测。在挤压地面条件下开发的采矿驱动器在其工作寿命期间报告了非常大的变形。本文报告了在加拿大魁北克省西北部的LaRonde和Lapa矿的采矿驱动中观察到的非常大的变形的长期研究。这项分析是在两个矿山进行全面仪器、岩石质量特征和监测方案之后进行的。分析并应用驱动收敛测量来量化结构、强度和采矿开发在挤压地面条件中的作用。观察到的掘进收敛水平比以前在其他硬岩矿山报道的要高得多。本文报道了控制挤压程度的岩体、应力和设计参数的定量解释。这些观测结果对挤压地面条件下采矿驱动的设计和缓解具有重要影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mining Technology-Transactions of the Institutions of Mining and Metallurgy MINING & MINERAL PROCESSING-

CiteScore

2.20

自引率

9.10%

发文量