Research Article
Experimental Research and Numerical Simulation on Grouting Quality of Shield Tunnel Based on Impact Echo Method
Table 1
Material parameters of SG samples.
| | Group | Grouting elasticity modulus/
(MPa) | Grouting density/
(kg/m3) | Segment elasticity modulus/
(MPa) | Segment density/
(kg/m3) |
| | SG-A | 2350 | 1539 | 34500 | 2500 | | SG-B | 6900 | 1913 | 34500 | 2500 | | SG-C | 11330 | 1947 | 34500 | 2500 |
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