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建立了可爆性分级预测的博弈论物元可拓模型,以弥补现有岩体可爆性分级方法的不足。首先确定岩体可爆性分级指标与分级标准,通过隶属函数对分级标准进行隶属化,并确定节域隶属化范围,弥补了特征值可能超出节域而使关联函数失效的缺陷;然后运用博弈论,将评价指标客观动态权重与主观静态权重优化、融合,克服了传统物元可拓评价中单纯依靠特征值赋权而忽略特征本身对评价结果的重要性的弊端;最后通过最大关联度准则对岩体可爆性等级进行预测,从而建立可爆性分级的博弈论物元可拓预测模型。工程应用研究结果表明,在锌铜矿体中顶板围岩和矿体中等易爆,下盘围岩较易爆,预测结果与实际工程地质情况有较好的一致性,并提出了相应的矿山工程爆破控制措施。
A combustible matter-element extension model based on game theory was established to make up for the shortcomings of existing blasting methods. First of all, it determines the grade and grading standard of rock burst, subordinates grading standard through membership function, and determines the area of subordination of the domain to make up for the defect that the eigenvalue may be out of the domain and make the correlation function invalid. Then, The author optimizes and merges the objective dynamic weight and the subjective static weight of the evaluation index, overcomes the drawbacks of traditional matter-element extension evaluation that rely solely on the eigenvalue weight and neglects the importance of the feature itself to the evaluation result. Finally, The predictability of the blastability grade of rock mass can be used to establish the explosion-grade game matter-element extension model. The results of engineering application show that the surrounding rock and ore bodies in the roof of the zinc-copper ore body are moderately explosive and the surrounding rock of the lower plate is more explosive. The prediction results are in good agreement with the actual engineering geological conditions and the corresponding mines Engineering blasting control measures.