AUTOMATION OF COMPRESSION-AND-VACUUM PERCUSSION MACHINES FOR SHALLOW SEISMIC EXPLORATION
The need for automated compression-and-vacuum percussion machines for shallow seismic exploration is evaluated. The gravity automatic vacuum shock machines AVK-1 and AVK-2 are designed and tested under laboratory and field conditions. The testing results and specifications of the shock machines are presented. The author proposes a method to prevent unwanted dynamic event, namely, repeated impact, during seismic exploration. The relations between the values of a productive stroke of the hammer head and the gravity switcher of the inertia-friction valve are obtained. The ways of further improvement in the machines of this kind are demonstrated.