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

Table 5

Basic parameters of grouting soil.

Number	Density ρ (kg/m^3)	Cohesion c (kPa)	Internal friction angle φ (°)
1	1988	80.4	29.6
2	1935	76.8	23.5
3	1862	62.3	21.6
4	1977	65.8	26.8
5	1958	55.2	29.7
Average	1944	68.1	26.2