Research Article
An Investigation of Effects and Safety of Pipelines due to Twin Tunneling
Table 3
Parameters of sand layer materials after model preparation in the four centrifuge model tests.
| | Test identity | Initial void ratio (e) | Density, ρ (kg/m3) | Initial relative density, Dr (%) |
| | Test 1 | 0.711 | 1.549 | 70 | | Test 2 | 0.719 | 1.542 | 68 | | Test 3 | 0.711 | 1.549 | 70 | | Test 4 | 0.711 | 1.549 | 70 |
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