Phase Planning for Open Pit Coal Mines through Nested Pit Generation and Dynamic Programming

Table 2

Major quantities of the best phase plan.

	Phase 1	Phase 2	Phase 3	Phase 4	Total
Coal quantity/Mt	200.15	200.50	200.66	220.29	821.60
Rock quantity/Mm^3	640.18	847.81	1012.22	1391.33	3891.54
UCM quantity/Mm^3	476.46	320.68	302.97	206.65	1306.76
Average strip ratio/m^3:t	5.58	5.83	6.55	7.25	6.33
Time length/a	10.01	10.02	10.03	11.01	41.07
NPV/M RMB	13716.69	5920.99	2235.72	712.15	22585.55