Investigation of the Optimization of Unloading Mining Scheme in Large Deep Deposit Based on Vague Set Theory and Its Application

Table 4

Normalization of the economic indicators.

Scheme	Production capacity (t/d)	Cost (Yuan/t)	Ratio of mined tonnage to development (m/kt)
I	0.89	0.29	0.10
II	0.54	0.47	0.10
III	0.10	1.00	0.40
IV	1.00	0.10	0.61