flat-back cut and fill的意思|示意
美 / /
英 / /
平背切割和填充
flat-back cut and fill的网络常见释义
上向水平分层充填法 ... 上向梯段工作面 step-faced overhand stopes 上向水平分层充填法 flat-back cut and fill 上向水平分层开采法 flat-back method ...
flat-back cut and fill相关例句
To overcome the difficulty of unstability of orebody and surrounding rock, the test of flat-back cut-and-fill drift mining is carried out.
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。