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本文所谓的缓倾斜中厚矿体,是指倾角在30°以下,真厚度大于5米、小于20米的矿体。这类矿体一向被认为是难采矿体,主要是因倾角缓,无法利用自重放矿;上部丢失的矿量,无法借自重由下段的放矿结构回收;顶盘崩落的岩石不能下移,无法为下段所利用;因为矿体是中厚,若用房柱法开采,其厚
The so-called moderately inclined medium thick ore body refers to the orebody whose inclination angle is below 30 °, true thickness greater than 5 meters and less than 20 meters. Such ore bodies have always been considered as difficult to mine, mainly due to the slow inclination, unable to use their own weight to mine; the amount of the upper part of the lost ore can not be borrowed by gravity from the lower part of the ore recovery structure; roof caving rock can not be moved down, Can not be used for the next paragraph; because the ore body is thick, if the method of mining pillar, the thickness