自然崩落法可崩性研究现状及发展趋势

State of predicting cavability study for block caving

自然崩落法矿山矿岩可崩性预测的准确性直接决定着矿山开采的成败,本文通过对国内外相关文献的查阅整理,明确了可崩性研究应综合考虑矿岩是否可崩落、崩落面积合理性、崩落块度适宜性等问题,并进一步总结了国内外此类问题研究方法的优势和不足,对其发展趋势进行了分析,得到以下主要结论:应进一步收集已实施矿山案例指标对现有经验法则补充完善;应重点关注物理模型试验中对节理面性质的模拟研究;可利用不同数值分析方法间的耦合分析技术手段对矿岩崩落特性进行分析预测,相关结论能够为从事该研究的科研工作者及采矿技术人员提供有益借鉴。

A reliable prediction of rock mass cavability is a critical factor in the successful caving of most orebodies. Through reviewing and systemizing the papers at home and abroad,the study of cavability should include available to collapse, reasonable undercut size to achieve continuous caving and reasonable fragmentation. Further the advantage and disadvantage were summarized when scholars research on it from now on,and then the status in prediction of cavability research was clearly summarized. Broadly speaking, the conclusions were obtained as following. At first, more projects should be increased into the empirical methods to expend their application range. Secondly, how to simulate the property of joints when using physical model was increasingly important. The last but not the least, the coupling of different numerical simulation methods should be given more and more attention to evaluate the cavability. Perhaps, this paper will provide reference for correlation workers and mining engineers.