Seismo-Acoustic Methods in Mining / Primenenie Seismoakusticheskikh Metodov v Gornom Dele / Применение Сеисмоакустических Методов в Горном Деле

Front Matter....Pages i-viii
Principles of the Application of Seismo-Acoustics to Coal Seams Subject to Rock Bursts....Pages 1-8
SED Electrodynamic Geophones....Pages 9-25
Impulse Method for Calibration of Electrodynamic Vibrometers....Pages 27-29
Simple Piezoelectric Accelerometer Geophones for Geophysical Laboratory Investigations....Pages 31-34
Audiometric Location of Lost Boreholes in Mine Workings....Pages 35-42
The ZUA-2-VCh Seismo-Acoustic Equipment....Pages 43-47
Automatic Monitor for Natural Seismo-Acoustic Pulses....Pages 49-52
A Two-Coil Galvanometer for Modulation with a Very-Low-Frequency Amplifier....Pages 53-56
Seismo-Acoustic Determination of the Boundaries of Zones in Coal Seams Subject to Rock Bursts....Pages 57-61
Possible Statistical Method of Processing Data on the Seismo-Acoustic Conditions of Seams Subject to Rock Bursts....Pages 63-70
Current and Advance Warning of Burst-Prone Zones in Coal Seams....Pages 71-74
Relation between Rock Pressure Diagrams and the Seismo-Acoustic Conditions in a Coal Seam....Pages 75-78
Determination of the Zone of Origin of Elastic Pulses during Advance of the Working Face in a Steep Seam....Pages 79-80
Locating the Sources of Seismo-Acoustic Pulses in a Coal Seam....Pages 81-86
Seismo-Acoustic Method for Determining the Efficiency of Measures to Combat Rock Bursts....Pages 87-91
The Effect of Advance Boreholes on the Noise Level and Stress State in the Zone Directly Adjoining the Working Face....Pages 93-95
Determining the Relief Zone of Rise Boreholes by the Seismo-Acoustic Method....Pages 97-101
Comparative Analysis of Natural and Mining-Induced Seismo-Acoustic Pulses....Pages 103-106
Energy Analysis of Seismo-Acoustic Processes Accompanying Rock Bursts....Pages 107-112
Relative Changes in the Characteristics of Elastic Pulses Before Rock Bursts....Pages 113-118
Characteristics of Elastic Vibrations Excited in Rocks by Uniaxial Loading....Pages 119-123
Seismo-Acoustic Method of Investigating the Effect of Shotfiring on the Roof of Underground Workings....Pages 125-129
The Electroseismic Effect in Rocks....Pages 131-134