Modified Rheological Model for Deep-Buried Silty Mudstone and Support Time Analysis Application

Table 2

Creep testing procedure for silty mudstone (unit: MPa).

Confining pressure	1st load	2nd load	3rd load	4th load	5th load	6th load
0	3	6	9	12	15	18
5	5	10	15	20	25
10	10	20	30	40	50
20	15	30	45	60
30	18	36	54	72