The practice demonstrates that high density electrical technique could precisely predict the space distribution characteristics of complicated underground cavities, and is worth to be applied further.

实践证明，采用高密度电法能够高精度预测地下复杂采空区的空间分布特征。

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The model considers the mining order and the grade distribution in different deposit sections and has realized the time-space dynamic combination of the cutoff grade in underground mining.

该模型考虑矿体的开采顺序和矿床不同区段的品位分布，实现了地下开采边界品位在时间和空间上的动态结合。

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