潘尼杨煤矿一直使用露天开采法进行开采。

The Panian coalfield is being mined using open-pit methods.

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灰关联度计算表明，采矿方法适应性排序为：露天开采法、分段崩落法、阶段矿房法等；

The gray relation degree indicates that the series for adaptability of every mining method are surface mining, sublevel caving mining, block stop mining etc;

youdao

灰关联度计算表明，采矿方法适应性排序为：露天开采法、分段崩落法、阶段矿房法等；

The gray relation degree indicates that the series for adaptability of every mining method are surface mining, sublevel caving mining, block stop mining etc;

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