Destruction of rocks by the non-explosive depleting compounds during mining
Purpose. Justification of the possibility of non-explosive coherent rocks destruction while carrying out stratal underground mine workings on the basis of the set of dependencies describing changes in physical and mechanical properties of the non-explosive depleting compounds (NDC) during hydratio...
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| Datum: | 2016 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
УкрНДМІ НАН України, Інститут геотехнічної механіки НАН України
2016
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| Schriftenreihe: | Розробка родовищ |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/104710 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Destruction of rocks by the non-explosive depleting compounds during mining / S. Sakhno, В. Kobylianskyi, I. Sakhno // Розробка родовищ: Зб. наук. пр. — 2016. — Т. 10, вип. 1. — С. 25-30. — Бібліогр.: 8 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Purpose. Justification of the possibility of non-explosive coherent rocks destruction while carrying out stratal underground
mine workings on the basis of the set of dependencies describing changes in physical and mechanical properties
of the non-explosive depleting compounds (NDC) during hydration process in the blast-hole charges in relation
to crack growth in the adjacent area.
Methods. By conducting experiments on the unequal component triaxial compression unit, we obtained the dependence
of changes in the physical and mechanical properties of the NDC on the hydration time and the relationships
between the physical and mechanical properties. The required distance between the blast-holes with NDC was established
analytically for non-explosive destruction by quasi-static pressure of the compound expansion.
Findings. The study allowed to obtain empirical dependences of medium stress change, coefficient of transverse
strain, strain modulus of the NDC for compound expansion in time. The dependence of the strain modulus of the
NDC on medium stress has been established. The research resulted in the analytical dependence of the length of the
crack progressing from the blast-hole walls into the massif depth while implementing non-explosive technologies of
destruction on the compound expansion pressure, its elastic constants as well as physical and mechanical characteristics
of the medium under destruction.
Originality. Medium stresses caused by the NDC expansion grow in time similarly to the growth of the stress
tensor components, the dependence of the strain modulus on average stresses being satisfactorily described by an
exponential dependence.
Practical implications. The results of experimental and theoretical studies, taking into account sufficient accuracy
for practical applications, can be used to determine parameters of the quasi-static rocks breaking by non-explosive
compound during stratal mining. |
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