Evaluation of the Active Support and Yielding Bearing Properties of Artificial Pillars Supporting a Stope Roof Using 3DEC Numerical Simulation

Table 2

The designing program.

Projects	Study point	Types of support	Steps/stepsstable (X1, X2, X3)	Support stress (MPa) (Y1, Y1, Y3 or T1, T2, T3)	Remarks
1	Support modes	A	0%, 1%, 2%	0, 0.1, 0.01	Nonyielding
2		B	0%, 1%, 2%	0, 0.1, 0.07	Load-shedding yielding
3		C	0%, 1%	0, 0.1.	Constant yielding
4		D	0%, 1%, 2%	0, 0.1, 0.2	Load-increasing yielding without prestress
05	The magnitude of the support stresses	D	0%, 1%, 2%	0, 0.02, 0.04	Load-increasing yielding without prestress
6		D	0%, 1%, 2%	0, 0.03, 0.06
7		D	0%, 1%, 2%	0, 0.04, 0.08
8		D	0%, 1%, 2%	0, 0.05, 0.1
9		D	0%, 1%, 2%	0, 0.06, 0.12
10	The magnitude of the prestresses	E	0%, 1%, 2%	0.005, 0.01, 0.02	Load-increasing yielding with prestress
11		E	0%, 1%, 2%	0.01, 0.02, 0.04
12		E	0%, 1%, 2%	0.02, 0.04, 0.07
13		E	0%, 1%, 2%	0.03, 0.06, 0.1
14		E	0%, 1%, 2%	0.04, 0.08, 0.13