Ant Colony Optimization Analysis on Overall Stability of High Arch Dam Basis of Field Monitoring

Table 7

Point safety factor of abutments.

EL (m)	Generalized least squares		D-ACO
	Left abutment	Right abutment	Left abutment	Right abutment
2185	3.0 (gravity pier), 1.5~2.0 (out of gravity pier)	2	2.0~3.0 (gravity pier); 1.1~1.5 (out of gravity pier)	2.0
2148	1.5~3, 1.2~1.5 (fault)	2~3	1.5~3.0; 1.0~1.5 (fault)	1.5~2.0
2100	2~3	2, 1.2~1.5 (fault)	1.5~3.0	1.5~2.0; 1.2~1.5 (fault)
2050	2~3, 1.2~1.5 (fault)	2	2.0~3.0; 1.1~1.5 (fault)	1.5~2.0
2030	2∼3	2~3	1.5~3.0	1.5~5.0