Development of Similar Materials for Liquid-Solid Coupling and Its Application in Water Outburst and Mud Outburst Model Test of Deep Tunnel

Table 4

Permeability coefficient of surrounding rock and fault similar materials.

Mixing ratio of surrounding rock materials			Fault material ratio
Mountain sand : red clay : cement : water	Proportion of red clay (%)	Permeability coefficient (cm/s)	Red clay : mountain sand : gravel	Percentage of gravel (%)	Permeability coefficient (cm/s)
12 : 0.15 : 0.7 : 1.3	1.06	0.000142	1 : 1 : 0.4	16.67	0.000539
12 : 0.35 : 0.7 : 1.3	2.44	0.00013	1 : 1 : 0.5	20.00	0.000675
12 : 0.55 : 0.7 : 1.3	3.78	0.000118	1 : 1 : 0.6	23.08	0.000771
12 : 0.75 : 0.7 : 1.3	5.08	0.0000803	1 : 1 : 0.7	25.92	0.000857
12 : 0.95 : 0.7 : 1.3	6.35	0.0000554	1 : 1 : 0.8	28.57	0.000892
12 : 1.15 : 0.7 : 1.3	7.59	0.0000429	1 : 1 : 0.9	31.04	0.000982
12 : 1.35 : 0.7 : 1.3	8.79	0.0000904
12 : 1.55 : 0.7 : 1.3	9.97	0.0000655