基于混沌理论的矿山边坡岩体变形规律与安全预警系统

Deformation laws of rock mass and safe alarm system of mine slope based on chaotic theory

通过建立露天矿边坡安全监测系统,采用基于重构相空间的混沌理论揭示露天矿边坡岩体的变形规律,并建立基于重构相空间的边坡岩体变形的混沌神经网络预测模型,实现边坡岩体变形的精确预测,同时根据露天矿开采特征,建立边坡岩体变形的安全预警系统。研究结果表明:露天矿开采过程中,边坡岩体受节理裂隙、开采强度、地下水、地表降雨等多因素的影响,其变形受其内在确定性动力学机制所支配,表现出混沌特性,是边坡工程固有影响因素对边坡岩体综合作用的结果。边坡岩体变形安全预警系统不仅可预测边坡岩体的变形量和所处的安全区域,而且可反映出露天开采强度的合理性,为矿山调节产量和安全生产提供技术保障。

Through establishing the safety monitoring system in an open-pit slope, and using the chaos theory of phase space reconstruction, the deformation laws of rock mass in open-pit slope were revealed. Based on the reconstructed phase space, a deforming prediction model of chaotic neural network in slope rock mass was established, and thus the high accuracy prediction of slope deformation was realized. Meanwhile, analyzing the characteristics of open-pit mining, an early safe warning system of slope deformation was set up. The results show that in open-pit mining process, influenced by jointed, mining intensity, underground water, surface rainfall and other factors, the deformation of slope rock mass is dominated by its intrinsic deterministic dynamics mechanism, and has shown the features of chaos as a result of the engineering inherent impacts. The safe warning system can not only predict the slope rock mass deformation and the security zone, but also reflects the rationality of open-pit mining intensity, which provides technical support for regulating mine production and ensuring production safety.