Paper
Particle Velocity of Ground Vibration Reflects Mechanism of Rock Breakage and Damage to Structures
- Authors:
- S. K. Mandal; M. M. Singh; N. K. Bhagat
- Abstract
- Magnitude of particle velocity of each orthogonal component and the component triggering the sensor to monitor depends upon blast geometry and location of measurement with respect to source of vibration. Considering experimental investigations carried out at four different sites, the paper communicates that wide blast geometry (burden and spacing) with respect to depth of blastholes and location of measurement i.e., measurements made at higher altitudes (greater vertical distances) with respect to horizontal distance from vibrating source will result into higher magnitude of vertical or transverse components and will also trigger the sensor to monitor. Similarly, when measurements are made at same altitudes, vertical or transverse component will trigger the sensor to monitor when placed at closer distances and longitudinal component will trigger the sensor when placed at far off distances. The paper lastly communicates that since, each orthogonal vibration component behaves indifferently to cause structural damage, magnitude of each orthogonal component and the component triggering the structure plays an important role to ascertain safety of structure. Longitudinal component in comparison to vertical or transverse component generates more stress on structures and is more susceptible to cause damage to structures.
- Keywords
- P-wave Velocity; Blast Geometry; Distance of Measurement; Structural Stability
- StartPage
- 178
- EndPage
- 183
- Doi