Effects of Pipe Roof Support and Grouting Pre-Reinforcement on the Track Settlement

Table 3

Deformations using different types of pipes.

Number	Crown settlement (mm)	Peripheral convergence (mm)	Maximum track settlement (mm)
1	149.2	15.2	44.7
2	124.4	14.4	38.1
3	108.0	13.1	33.2
4	93.2	12.2	30.4
5	88.3	11.9	29.5
6	86.9	10.6	29.0