不同采掘扰动下的冲击地压危险ANN评价方法

    ANN Evaluation Method of Rock Burst Risk Under Different Mining Disturbance

    • 摘要: 针对传统冲击地压危险评价存在指数突跳、影响因素权重主观化和未区分回采与掘进影响因素等问题,采用模糊数学方法对受回采和掘进不同扰动影响下的冲击地压危险评价指标及评价方法进行了探讨。通过对各影响因素进行量化处理和训练人工神经网络,得到了不同采掘扰动条件下各影响因素的贡献权重,建立了回采与掘进冲击地压危险ANN评价方法。分析典型冲击地压案例矿井数据,利用神经网络模型分析冲击地压危险评价的关键影响因素,通过相关性分析得到的回采和掘进扰动影响因素权重并对采掘冲击地压危险评价进行严格区分。实例验证,表明考虑不同采掘扰动影响因素的冲击地压危险ANN评价结果更加符合工程实际。

       

      Abstract: For the problems that traditional assessment methods for rock burst have index unstable, the subjective weights of affecting factors and un-distinguished influence factors of mining and excavation, fuzzy mathematics is used to study risk assessment indexes and evaluation methods of rock burst under different disturbance of mining and excavation. By quantifying influence factors of rock burst, training the artificial neural network and calculating the results, the contribution weights of each influencing factor under different mining conditions were obtained, and mining and excavation ANN evaluation method of rock burst hazard was established. Through the analysis of typical case of rock burst, the weights of influencing factors on mining rock burst hazard evaluation were obtained, and we made a distinction between mining and excavation disturbance by using neural network model and correlation analysis. Based on rock burst risk assessment, the results showed that ANN evaluation results of rock burst risk under different mining disturbance conditions are more consistent with the engineering practice.

       

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