成功, 李炜强, 李冬伟, 马利科. 当量采深估算方法在岩爆危险性等级评价中的应用[J]. 中国矿业, 2021, 30(4): 181-184. DOI: 10.12075/j.issn.1004-4051.2021.04.016
    引用本文: 成功, 李炜强, 李冬伟, 马利科. 当量采深估算方法在岩爆危险性等级评价中的应用[J]. 中国矿业, 2021, 30(4): 181-184. DOI: 10.12075/j.issn.1004-4051.2021.04.016
    CHENG Gong, LI Weiqiang, LI Dongwei, MA Like. Application of equivalent mining depth estimation method in evaluation of rock burst level[J]. CHINA MINING MAGAZINE, 2021, 30(4): 181-184. DOI: 10.12075/j.issn.1004-4051.2021.04.016
    Citation: CHENG Gong, LI Weiqiang, LI Dongwei, MA Like. Application of equivalent mining depth estimation method in evaluation of rock burst level[J]. CHINA MINING MAGAZINE, 2021, 30(4): 181-184. DOI: 10.12075/j.issn.1004-4051.2021.04.016

    当量采深估算方法在岩爆危险性等级评价中的应用

    Application of equivalent mining depth estimation method in evaluation of rock burst level

    • 摘要: 为了研究浅部岩爆危险性定量评价方法,实现矿山采场岩爆分级评价和分类治理目标,根据应力叠加原理,建立了当量采深估算模型,提出了当量采深估算方法,并确定了估算方法的计算过程。研究表明:当量采深与实际采深成正相关,与矿柱尺寸成负相关。本文以山东某矿浅部岩爆现象为工程背景,由于巷道开挖和构造应力造成采场围岩应力集中,没有达到岩爆深度的浅部开采水平,却出现岩爆预兆现象。因此,采用当量采深估算方法对该矿浅部450中段采场进行岩爆分级评价,共划分48个矿柱单元,形成1个高度危险区,9个中等危险区,4个一般危险区,34个安全区,并对不同区域采取岩爆分级防治措施,达到了良好的岩爆防治目的,提高了矿山回采安全性和经济性。

       

      Abstract: In order to study the quantitative evaluation method of the rock burst hazard in the shallow part of the mine, and to realize the evaluation and classification of the rock burst in the stope.Based on the principle of stress superposition, an equivalent mining depth estimation model is established, and an equivalent mining depth estimation method is proposed, and the calculation process of the method is determined.The results show that the equivalent mining depth is positively correlated with the actual mining depth, and negatively correlated with the size of the ore pillar.A shallow mine in Shandong province is taken as the engineering background.The stress concentration of the surrounding rock in the stope has occurred due to tunnel excavation and structural stress, so the rock burst occurs at shallow levels that have not reached the rock burst depth.The equivalent mining depth estimation method is used to evaluate the rock burst classification of the 450 m stope in the shallow mine, and a total of 48 ore units are divided into 1 highly dangerous zone, 9 medium dangerous zones, 4 general dangerous zones, 34 safety zones, and rock burst prevention measures have been taken in different areas to achieve good control goals, and successfully improved mine safety and economic efficiency.

       

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