放矿截止品位应该如何确定有人已经在这方面做了工作。我想在这个问题上进一步提出一些见解。以无底柱分段崩落法为例来讨论这个问题。在无底柱分段崩落法中,回采工作是一个单元一个单元地进行的。我们把这种单元叫做回采单元。每个回采单元是一条回采进路所分摊的那条工业矿石的一部分。 How to Determine the Cut-off Grade Someone has already done some work in this area. I would like to make some further suggestions on this issue. Take the pillarless subsidence method as an example to discuss this issue. In the pillarless caving method, the mining work is carried out on a unit-by-unit basis. We refer to this unit as the recovery unit. Each recovery unit is part of a piece of industrial ore that is shared by the recovery path.