Research Article
Sensitivity Analysis of Effective Parameters in Borehole Failure, Using Neural Network
Table 1
Rock material properties and in situ stresses used in numerical analysis.
| Parameter | Symbol | Unit | Value |
| Cohesion | | | 30 | Friction angle | | | 52.5 | Young’s modulus | | | 59 | Poisson’s ratio | | | 0.25 | Maximum horizontal stress | | | 200 | Vertical stress | | | 50 | Minimum horizontal stress | | | 40 |
|
|