In recent years, a new field of knowledge has developed — geoacoustics, which combines a complex of acoustic methods intended to solve mining and geophysical problems. Depending on the specific tasks, the frequency range used covers the range from fractions of a hertz to megahertz. Modern geoacoustics is developing in several directions: sound ranging, acoustic logging, modelling of seismic processes, and ultrasonic methods for studying the stress state of rocks. ...
In resonant measurements on longitudinal vibrations, the modulus of longitudinal elasticity E (Young's modulus) is determined, and on torsional vibrations – the shear modulus G. For a rock sample in the form of a rod with free ends …
The sonar method of surveying control and surveying of mine workings is used in the practice of mining enterprises relatively recently.Currently, this method of distance measurement is used in the surveying of dredge ranges, deep open-pit ore passes, inaccessible underground salt leaching chambers and underground storage of petroleum products, as well as mine shafts and boreholes drilled by boring.
