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Discussion and determination to surrounding rock classification of metal mine

机译：金属矿区周围岩石分类的探讨与决心

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摘要

With the development of rock mechanics, people improve their cognition about surrounding rock classification, the existing classification standards have some problems and can not receive extensive application at the process of exploiting underground mine. Therefore, consulting the railway, road and anchor support design criterion, contrasting the details of surrounding rock classification, the amendment suggestion was put forward about scoring criterion of basic classification and amendment factors. According to the practical situation of metal mine, the safety factors under different depths were simulated using FLAC3D, as the influencing factors of surrounding rock classification, the depth and hole span joined to receive the rock stable capability list which contains the range of rock safety factors at all levels and large and small span. And take Gujiatai ironstone as an example, combining with the amended rock mass classification, comprehensive evaluation has been work out on surrounding rock situation of the whole mine.
机译：随着岩石力学的发展，人们提高了对周围岩石分类的认识，现有的分类标准有一些问题，无法在利用地下矿井过程中获得广泛的应用。因此，咨询铁路，道路和锚点支持设计标准，对比周围岩石分类的细节，提出了关于基本分类和修正因素的评分标准提出了修正案。根据金属矿的实际情况，使用FLAC3D模拟不同深度下的安全因素，因为周围岩石分类的影响因素，深度和孔跨度接合接收岩石稳定能力列表，其中包含岩石安全因子范围在各级和大小的跨度。并以古田铁通为例，结合修改后的岩石大规模分类，综合评价一直在整个矿井周围的岩石状态。

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