Study on Creep Characteristics and Constitutive Relation of Fractured Rock Mass

Table 3

Identification results of creep model parameters.

Model	K	G1 (MPa)	η1 (MPa·h)	G2 (MPa)	η2 (MPa·h)	G3 (MPa)	C	n	R^2
Burgers	1405.173	1282.984	970486.977	24829.455	69348.095	—	—	—	0.997
	690.772	630.705	943793.638	25684.545	67545.498	—	—	—	0.994
	460.658	420.601	928555.343	26136.347	63703.257	—	—	—	0.991
	347.036	316.859	842878.145	25978.658	55542.856	—	—	—	0.990
	265.569	249.237	798621.687	24036.263	49851.892	—	—	—	0.969
F-D	982.525	897.283	635384.554	16248.256	45454.447	191574.563	7.713 × 10^−9	0.055	0.998
	485.155	443.064	630126.484	17148.671	45070.881	104343.923	7.929 × 10^−9	0.015	0.996
	325.072	296.869	631538.602	17776.032	43292.905	68274.135	8.471 × 10^−9	0.003	0.994
	245.983	224.642	582988.970	17966.628	38380.009	51212.810	2.469 × 10^−9	0.292	0.993
	198.108	180.921	704302.959	15649.894	27820.801	55882.069	1.040 × 10^−3	1.093	0.994