| 1. |
Despite the instruction in [4], when an external charge is exploded we cannot completely ignore the seismic effect.
|
| 2. |
When an external charge is exploded the maximum rate of displacement of the ground is recorded in wave B, excited by the air
shock wave at the observation point.
|
| 3. |
The rate of displacement in wave B can be determined by means of Eq. (7), if we know the pressure at the air shock wave front
at the given point, and the acoustic impedance of the upper layer of the earth.
|
| 4. |
The rate of displacement in wave B decreases rapidly with depth; this reduces the hazard of this wave for buildings, because
the foundations of most of them are buried.
|
Soyuzvzryvprom. Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 36–41,
January–February, 1980.