This paper presents the concept of surface-underground combined mining method and discusses the difference from combined open-pit and underground mining.

阐述了露天-地下联合采矿法的概念及其与传统的露天-地下联合开采的区别。

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The combined use of fuzzy mathematics, neural net method and gray system theory in the selection of mining method for Jinshan gold mine was a new trial.

将模糊数学、神经网络方法及灰色系统理论有机地结合起来，应用于金山金矿采矿方法选择中是一次新的尝试。

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Based on the united data mining techniques, a new method of optimum combined forecasting of power load is suggested.

提出了基于联合数据挖掘技术的电力负荷优选组合预测方法。

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