Research on Inpit Dumping Height during Tracing Mining Period between Two Adjacent Surface Coal Mines

Table 4

Transportation cost of stripping spoil over elevation 1100 in Haerwusu coal mine with elevation 1100 covered.

Elevation	Engineering quantity (m^3 × 10^6)	Distance (m)	Transportation unit price (yuan/m^4)	Transportation cost (million yuan)
1205	0.74	6455	0.0025	11.88
1190	2.01	6360	0.0025	32.03
1175	3.82	6445	0.0025	61.50
1160	8.72	6520	0.0025	142.19
1145	16.08	6545	0.0025	263.11
1130	22.94	5630	0.0025	322.82
1115	24.06	4520	0.0025	271.82
1100	29.41	3950	0.0025	290.46
Total				1395.82