The shrinkage method and the cut wall filling method were used to mine the steep orebody with a high grade in Dashuiqing gold mine, which resuled in greater dilution and loss as well as the unsafe.
英
美
- 大水清金矿曾用留矿法、削壁充填法开采高品位急倾斜矿体,贫化、损失率较大,且存在不安全因素。