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Control of Crack Formation in Rock in Using Nonexplosive Braking Compositions.

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Title: Control of Crack Formation in Rock in Using Nonexplosive Braking Compositions.
Authors: Lugovoi, P. Z.1 plugovyy@inmech.ksev.ua, Prokopenko, N. Ya.1, Orlenko, S. P.2 orlenko_sergey@ukr.net
Source: International Applied Mechanics. Nov2018, Vol. 54 Issue 6, p666-674. 9p.
Subjects: Rocks, Crack formation in solids, Elasticity, Nucleation, Surface cracks, Deformations (Mechanics)
Abstract: The physical and mechanical processes occurring in breaking rock in the required direction with the application of insert plates in a blast hole with nonexplosive breaking compositions (NBC) are studied theoretically in detail. Crack nucleation in the chosen direction in the borehole with insert plates with application of NBC is studied using the failure ellipse of rock for a plane problem and the third failure criterion. Graphs for determination of technological parameters such as the angle _of the insert plate at which the crack is at an angle _ to the minor axis of the failure ellipse of rock and the pressure depending on the desired crack direction are plotted. This enables the imporvement of the technology of stone mining and breaking of coal pillars by the blast-hole method with application of the insert plates and NBC. [ABSTRACT FROM AUTHOR]
Copyright of International Applied Mechanics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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An: 134038437
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PubType: Academic Journal
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  Data: Control of Crack Formation in Rock in Using Nonexplosive Braking Compositions.
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  Data: <searchLink fieldCode="JN" term="%22International+Applied+Mechanics%22">International Applied Mechanics</searchLink>. Nov2018, Vol. 54 Issue 6, p666-674. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Rocks%22">Rocks</searchLink><br /><searchLink fieldCode="DE" term="%22Crack+formation+in+solids%22">Crack formation in solids</searchLink><br /><searchLink fieldCode="DE" term="%22Elasticity%22">Elasticity</searchLink><br /><searchLink fieldCode="DE" term="%22Nucleation%22">Nucleation</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+cracks%22">Surface cracks</searchLink><br /><searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The physical and mechanical processes occurring in breaking rock in the required direction with the application of insert plates in a blast hole with nonexplosive breaking compositions (NBC) are studied theoretically in detail. Crack nucleation in the chosen direction in the borehole with insert plates with application of NBC is studied using the failure ellipse of rock for a plane problem and the third failure criterion. Graphs for determination of technological parameters such as the angle _of the insert plate at which the crack is at an angle _ to the minor axis of the failure ellipse of rock and the pressure depending on the desired crack direction are plotted. This enables the imporvement of the technology of stone mining and breaking of coal pillars by the blast-hole method with application of the insert plates and NBC. [ABSTRACT FROM AUTHOR]
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  Group: Ab
  Data: <i>Copyright of International Applied Mechanics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10778-018-0921-z
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      – Code: eng
        Text: English
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      – SubjectFull: Rocks
        Type: general
      – SubjectFull: Crack formation in solids
        Type: general
      – SubjectFull: Elasticity
        Type: general
      – SubjectFull: Nucleation
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      – SubjectFull: Surface cracks
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      – SubjectFull: Deformations (Mechanics)
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      – TitleFull: Control of Crack Formation in Rock in Using Nonexplosive Braking Compositions.
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              Text: Nov2018
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