黄金科学技术 ›› 2019, Vol. 27 ›› Issue (4): 539-547.doi: 10.11872/j.issn.1005-2518.2019.04.539
Keming LI(),Zhixiang LIU(),Ming LAN
摘要:
针对海底金矿涌水危险评价过程中的不确定性及随机性问题,选择工程地质及水文地质中涉及的10个重要因素构建评价指标体系,建立起涌水危险评价的云模型。基于评价结果,对危险区域的涌水量时间序列进行相空间重构,通过G-P算法及自相关法获得了重构相空间参数;分析了涌水量变化的相点距离演变规律,建立了涌水安全预警机制。结合混沌相空间重构,建立了涌水量预测的RBF神经网络模型。研究表明:涌水危险性的云模型评价结果准确可靠;相空间重构揭示了系统的混沌特性,最邻近相点演化将涌水量的内在细微变化特征放大,为涌水安全预警机制的建立提供了依据;混沌RBF神经网络能够实现涌水量的短期精确预测,为井下安全开采提供了技术保障。
中图分类号:
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