Research Article
Performance of Diaphragm Walls during Ultra-Deep Excavations in Karst Areas: Field Monitoring Analysis
Table 2
Properties of rock in the excavation site.
| | Rock | Coefficient of compressibility
(MPa−1) | Modulus of compressibility
(MPa) | Deformation modulus
(MPa) | Standard value of uniaxial ultimate compressive strength (MPa) |
| | Calcareous shale | 0.20 | 33.00 | 127.00 | 9.00 | | Limestone | — | 50.00 | — | 26.35 |
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