Underground sound conduction along a mine working

Rzhevskii, V. V.; Yamshchikov, V. S.

doi:10.1007/bf02539578

Cited by 2 publications

(2 citation statements)

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“…The need to perform control of the solid phase pulp characteristics is also highlighted by uncertainty of process unit parameters (Morkun et al, 2015b;Morkun, Tron, 2014;Morkun, Tcvirkun, 2014). Here, the most common method is application of controlled ultrasonic radiation that enables the required operating speed and measurement accuracy (Bogdanova et al, 1989;Viktorov, 1981;Lamb, 1917;Rzhevskiy, Yamshchikov, 1968;Seip et al, 1996).…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Love waves are of the similar nature. Unlike the above mentioned waves, they are horizontally polarized (Rzhevskiy, Yamshchikov, 1968;Seip et al, 1996). However, there are several disadvantages in applying the above types of waves, severe dependency of wave propagation parameters on the propagation surface state being among them.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Archives of Acoustics

Morkun

Tron

et al. 2019

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The article describes the method of controlling the recovered grade based on measuring the intensity of volume ultrasonic oscillations and Lamb waves covering a fixed distance through the test medium and on a metal plate contacting the test medium at various time points of deliberate motion of ground materials.The authors suggest a method of determining density of ground ore particles in the pulp periodically after isolating the pulp flow in the vertical part of the measuring vessel based on measuring attenuation change values in Lamb waves covering a fixed distance on a plate contacting the medium under study and high frequency volume ultrasonic oscillations that have come through it within a certain time period.There are given dependencies of amplitudes of measuring channels based on volume ultrasonic oscillations and surface Lamb waves, size distribution according to solid phase pulp particles for various types of ores under study, a set of curves for determining the recovered grade with regard to various types of ores under study.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Archives of Acoustics

Morkun

Tron

et al. 2019

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Use of ultrasound to determine the state of the roof rocks of mining-out rooms

Baikonurov¹,

Ermekov²

1972

Soviet Mining Science

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To ensure efficient and safe mining operations, it is important to know the stress in the rock mass around mine workings and its distribution pattern.It is known that mining operations in any rock mass disturb its internal extuilibrium, At the points in the rock mass adjoining the generatrix of the cavity the stresses are redistributed and concentrated around the working, This is the principal physical cause of the change in the properties of the rock around the working.Depending on the rock strength, two types of mechanical state of the rock mass around a working are most frequently observed; corresponding to these, two types of distribution of the acoustic characteristics of the rocks are noted as we go deeper into the rock mass and further from the periphery of the working [1].Rocks with higher stability, i.e., capable of withstanding the total stresses arising at the periphery of tim working and not in need of any support, are characterized by the elastic wave velocity distribution shown in Fig, la:

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Underground sound conduction along a mine working

Cited by 2 publications

References 0 publications

Archives of Acoustics

Archives of Acoustics

Use of ultrasound to determine the state of the roof rocks of mining-out rooms

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