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矿床是由几条沿走向起伏不大的花岗岩类矿脉组成的,矿脉厚度5～25米,通常是倾斜和急倾斜的。这些矿脉多半是留保安矿柱进行回采。这就决定了必须充填采空区。
The deposit is composed of several granite-like veins that show little ups and downs. The veins are 5-25 meters in thickness and are generally sloped and steeply inclined. Most of these veins are left to be pumped for security. This determines the need to fill the gob.