Analysis of Foundation Pit Support Selection and Design Problems in Deep Soft Soil Area

Table 1

Stability coefficient k when the excavation depth is 4 and 6 m.

Excavation depth Grade Depth of slope toe	4 m	6 m	4 m	6 m
	1 : 1.5	1 : 1.5	1 : 0.3 (spray anchor)	1 : 0.3 (spray anchor)
0	1.086	0.793	0.785	0.550
1 m	1.053	0.994	0.970	0.695
2 m	1.043	0.926	0.991	0.721
3 m	1.038	0.886	1.006	0.775
4 m	1.037	0.871	1.020	0.782
6 m	1.051	0.879	1.042	0.827
8 m	1.063	0.898	1.058	0.849
10 m	1.074	0.919	1.071	0.864
12 m	1.083	0.937	1.080	0.895
14 m	1.090	0.958	1.088	0.922