Down-the-Hole Unbalance Vibration Exciter for Seismic Treatment of Face Zone
S. V. SERDYUKOV, L. A. RYBALKIN, P. A. DERGACH, A. S. SERDYUKOV, A. V. AZAROV
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: скважинный сейсмический источник, вибрационное воздействие, породный массив, сейсмические колебания, спектральный состав, down-the-hole seismic source, vibrational impact, rock mass, seismic vibration, spectral content
Abstract
The down-the-hole unbalance vibration exciter with the pneumatic drive is designed to treat face zone in the seismic frequency range. The modular-type source consists of a vibration generator with the automated stepped static moment variation, a hold-down unit and an in-built pneumatic percussive device to advance the facility in uncased holes. The article gives pilot test data on R&D model of the vibration exciter, and amplitude-frequency characteristic and spectral content of the excited signal.
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