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

Table 4

Design of factors and levels for the orthogonal experimental design.

Levels	Factors
	Lateral pressure coefficient/	Dip/°	Thickness/m	Distance/m	Location
1	1.0	20	10	50	Hanging wall
2	1.5	45	20	100	Footwall
3	2.0	70	30	150