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对大宝山铜铁矿开采过程中采区岩层的变形进行了监测,提出矿床开采岩层释放能量的分析方法。对岩层释放能量的时间序列重构相空间,得出岩层释放能量的动力系统饱和嵌入维数为4,关系维数为1.2128,用混沌理论揭示岩层释放能量在相空间中的相点距离演变规律。用灰色理论建立岩层释放能量的预测模型,最大预测误差在6.7%以内,实现采区岩层释放能量的准确预测。研究表明,岩层释放能量表现出混沌特性,对其相空间进行重构后,岩层释放能量的细微变化特征被放大,其内在规律能得到充分展示,并以此建立矿床开采岩层释放能量的安全预警系统,为矿山安全采矿提供了技术保障。
The deformation of rock strata in mining area during the mining of Dabashan copper-iron mine was monitored, and the analytical method of energy release from the strata of ore-mining was proposed. Based on the time series reconstructed phase space of rock release energy, the saturated embedding dimension of dynamic system of rock release energy is 4 and the relation dimension is 1.2128. The evolution law of phase point distance of rock release energy in phase space is revealed by chaos theory . Using gray theory to establish the prediction model of rock release energy, the maximum prediction error is within 6.7%, and the accurate prediction of rock release energy is achieved. The research shows that the energy released by the rock shows chaotic characteristics. After reconstructing its phase space, the subtle variation of the released energy of the rock is magnified and its internal regularity can be fully demonstrated, so as to establish the safety warning of the release of energy from the rock of the ore deposit. System, providing technical support for mine safety mining.