Study on the Mixed Materials Proportion of Stratum Based on the Modelling Experiment

Table 8

Orthogonal test conclusion.

Serial number	Proportion of iron and sand in mixture (%)	Quality ratio between iron and sand	Quality ratio between gypsum and lime	Elastic modulus ()	Cohesion ()	Friction angle (°)	Density ()	Poisson’s ratio
1	80	2 : 3	2 : 1	9.76	16	29	2.24	0.30
2	80	1.5 : 3.5	1 : 1	17.95	2.8	31.28	2.16	0.35
3	80	1 : 4	1 : 2	23.78	16.05	28.80	2.11	0.37
4	85	2 : 3	1 : 1	19.94	29.69	26.60	2.28	0.34
5	85	1.5 : 3.5	1 : 2	21.56	22.87	27.19	2.17	0.36
6	85	1 : 4	2 : 1	8.43	27.29	25.11	2.05	0.31
7	90	2 : 3	1 : 2	16.37	20.06	27.91	2.25	0.35
8	90	1.5 : 3.5	2 : 1	2.48	24.48	27.58	2.15	0.30
9	90	1 : 4	1 : 1	13.68	10.43	28.48	2.09	0.33