Down-the-hole unbalance vibration exciter for seismic treatment of bottom-hole zone
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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.
KeywordsDown-the-hole seismic source vibrational impact rock mass seismic vibration spectral content
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- 6.Chichinin, I.S., Vibrtatsionnoe izluchenie seismicheskikh voln (Vibration-Induced Emission of Seismic Waves), Moscow: Nedra, 1984.Google Scholar
- 7.Borzov, V.M. and Ivlev, V.I, Improvement of Operation of Plate Pneumatic Motor Using Structural Materials with Better Properties, Vestn. Nauch.-Tekh. Razv., 2009, no. 9(25), pp. 2–6.Google Scholar
- 8.Chukhareva, N.V., Raschet prostykh i slozhnykh gazoprovodov (Design of Simple and Complex Gas Pipelines), Tomsk: TPU, 2010.Google Scholar
- 9.Mills, K., Jeffrey, R., Black, D., et al., Developing Methods for Placing Sand-Propped Hydraulic Fractures for Gas Drainage in the Bulli Seam, Underground Coal Operators’ Conference, Wollongong, Australia, 2006, pp. 190–199.Google Scholar