Creep Mechanical Properties of Granite under Combined Axial Compression and Water Pressure and Support Characteristics of Surrounding Rock

Table 5

Percentage increase of displacement with the change of support lag spacing (compared to 10 m).

Position lag distance	Whole (%)	1# unit section (%)	2# unit section (%)	3# unit section (%)	4# unit section (%)	5# unit section (%)	6# unit section (%)
20 m	1.24	10.56	11.04	10.59	10.84	11.26	12.56
40 m	5.73	23.50	24.04	23.79	24.49	24.74	26.65
80 m	19.01	33.21	33.53	33.59	34.27	34.27	35.15