Numerical Simulation Research and Application of Support Design of Broken Rock Mass in Submarine Gold Mine

Table 6

Comparison table of simulation results of surrounding rock under different supporting conditions.

Position	Support scheme	Minimum principal stress; (MPa)	Maximum principal stress; (MPa)	Maximum roof displacement; (mm)	Maximum lateral wall displacement; (mm)	Maximum thickness of roof plastic zone; (m)	Plastic zone volume of the surrounding rock; (m^3)
−360 m	Unsupported	−33.89	0.48	12.73	13.13	1.03	253.30
	Scheme A	−33.50	0.89	9.31	11.28	0.43	186.63
	Scheme B	−33.48	0.94	9.37	11.34	0.50	191.81