FIELD: mining geophysics, evaluation of stress-deformed state of rocks and diagnostics of mass by seismo-acoustic method. SUBSTANCE: geophone-release has two rods of various length touching one another with butts. Surface of longer rod has ribs of triangular section covered with rubber damper. Shorter rod is pressed against butt of longer rod with the use of iris spring. Rods are components of D C circuit composed of power supply source closed by two resistors connected in series, capacitor connected in parallel to one of resistors with output to calculator and rods connected in parallel to capacitor. EFFECT: generation of frequency-and form-stable pulse. 1 dwg
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