Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Jinan, China.
Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang, China.
PLoS One. 2023 Mar 17;18(3):e0283205. doi: 10.1371/journal.pone.0283205. eCollection 2023.
The problem of high stress conditions is a critical challenge for mining activity in deep metal mines, and the difficulty and economic cost of maintaining stope stability also increases. In order to ensure stope stability in the mining process, it is necessary to evaluate stope stability for a more stable stope structure. However, there are many kinds of methods for rock stability assessment, and most of them are based on empirical and analytical methods, which lead to uncertain results. In this paper, a comprehensive evaluation method including factors of stope stability, self-stabilization time, maximum safety span, and support measure is determined, which is more likely to provide a comprehensive result. Finally, it was verified by the field application in Jiaojia Gold Mine. Results show that it can accurately evaluate the stope stability from different aspects compared with the traditional single evaluation method, and it leads to a more comprehensive and reliable result.
高应力条件的问题是深部金属矿山采矿活动的一个关键挑战，并且保持采场稳定性的难度和经济成本也会增加。为了确保采矿过程中的采场稳定性，需要对采场稳定性进行评估，以获得更稳定的采场结构。然而，岩石稳定性评估的方法有很多种，其中大多数都是基于经验和分析方法，这导致结果不确定。在本文中，确定了一种包括采场稳定性、自稳时间、最大安全跨度和支护措施等因素的综合评价方法，更有可能提供全面的结果。最后，通过在焦家金矿的现场应用进行了验证。结果表明，与传统的单一评价方法相比，它可以从不同方面准确地评估采场稳定性，从而得到更全面、更可靠的结果。
