No vibrations could be detected in the buildings
Vibrations were continuously measured at five measuring points. The measurements were performed using 3D vibration gauges. The gauges were installed in the foundations of residential buildings.
The vibration results were in the range between 2.0 and 12 mm/s. Based on the audio data, the vibration was caused in the vicinity of the measuring point by activities related to normal living.
During blasting, the vibration was below 2 mm/s at all the measuring points. The first blast was performed in the test pit VE2, located at a distance of 690 metres from measuring point MP2 and 1,800 metres from measuring point MP12. Other blasts were performed in test pit VE3, located at a distance of 830 metres from measuring point MP2, and 1,600 metres from measuring point MP12.
No vibrations caused by the blasts could be detected in the buildings.