Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution.
无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。
Compared with other production section, south section ore scale, shape and occurrence are different, and it is difficult to control mining dilution rate in this section.
狮岭南地段矿体规模、形态、产状特征与其他主生产地段相比，差异很大，该地段采矿贫化率较难控制。
Compared with other production section, south section ore scale, shape and occurrence are different, and it is difficult to control mining dilution rate in this section.
狮岭南地段矿体规模、形态、产状特征与其他主生产地段相比，差异很大，该地段采矿贫化率较难控制。
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