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

Table 8

Transportation cost of stripping spoil over elevation 1160 in Haerwusu coal mine with elevation 1160 covered.

Elevation	Engineering quantity (m^3 × 10^6)	Distance (m)	Transportation unit price (yuan/m^4)	Transportation cost (million yuan)
1205	73.6	4401	0.0025	8.10
1190	201.45	4280	0.0025	21.56
1175	381.70	4310	0.0025	41.13
1160	872.35	4415	0.0025	96.29
1145	1608.0	5255	0.0025	211.25
1130	2293.6	4700	0.0025	269.50
1115	2405.5	4520	0.0025	271.82
1100	2941.4	3950	0.0025	290.46
Total				1210.10