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本文所述不稳围岩缓倾斜薄矿体,主要是指直接顶板不稳固,倾角一般在0～20～35°之间,厚度一般为0.5～1.0～2.0米的矿体。对于此类矿床的采矿方法问题,兹仅举某锰矿的缓倾斜薄矿体类型为例进行探讨。该矿矿体产于二迭纪乐平煤系的底部,白泥塘层上部,呈单一层状产出,因受一级褶皱的影响,矿体底板起伏不平。矿体由南向北倾斜,倾角为25～55°,大部分矿体倾角在25～30°之间。矿体平均厚度为2.06米。矿体接近地表的部分为氧化锰
The unsteady wall-shearing slant thin ore body described in this article mainly refers to the ore bodies with unstable direct roofs, generally ranging from 0 to 20 to 35 degrees in inclination and 0.5 to 1.0 to 2.0 meters in thickness. For the mining method of this type of ore deposit, we will only take the example of the type of gently inclined thin ore body of a manganese mine as an example. The ore body is produced at the bottom of the Erdie Ji Leping coal system and above the Baihetang layer, and it is produced as a single layer. Due to the effect of first-order folding, the ore body floor is undulating. The ore body is inclined from south to north, with an inclination of 25-55°, and most of the ore bodies have an inclination of 25-30°. The average thickness of the ore body is 2.06 meters. The portion of the ore body near the surface is manganese oxide.