Effect of Shaft Pillar Extraction on Stability of Main Shaft: A Case Study at Xincheng Gold Mine, China

Table 1

Information of the XI# ore veins.

Vein number	Tonnage of ore/kt	Percentage/%	Distance from the shaft/m
XI-1	1174.51	69.43%	210
XI-2	7.84	0.46%	129
XI-3	49.87	2.95%	133
XI-4	75.55	4.47%	157
XI-5	40.28	2.38%	78
XI-6	4.96	0.29%	65
XI-7	49.87	2.95%	59
XI-8	155.90	9.22%	103
XI-9	132.92	7.86%	103
In total	1691.71	100.00%	-