Research Article

Grouting Reinforcement of Large Building Foundation over Old Gob Areas: A Case Study in Huaibei Mining Area, China

Table 1

Test results of the mechanical properties of the rock samples.

Rock samplesRc (MPa)Rt (MPa)

K4 mudstone12.49
K4 sandstone119.13
K6 mudstone10.65 (drying)
21.10 (drying)
30.49 (drying)
Average value0.75
K7 mudstone119.260.48
K7 igneous146.93
254.18
333.09
Average value44.43