针对其矿体不稳固、围岩中等稳固，以及存在较大采空区，矿体完整性遭破坏的情况，提出了上向进路充填法开采的设计方案。
Because of these problems such as unstable ore bodies, moderately-stable wall rock, large work-out area, the design proposal of mining these ore bodies by filling-up method is presented.
针对凡口铅锌矿狮岭顶板矿体和围岩极不稳固的牲，进行了机械化上向进路分层充填采矿工艺的试验研究。
To overcome the difficulty of unstability of orebody and surrounding rock, the test of flat-back cut-and-fill drift mining is carried out.
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