Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions
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| Datum: | 2010 |
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| Sprache: | Russian |
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Інститут геофізики ім. С.I. Субботіна НАН України
2010
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| Schriftenreihe: | Геофизический журнал |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/101188 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions / S. Astafurov, E. Shilko, A. Grigoriev, A. Panchenko, S. Psakhie // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 5-6. — Бібліогр.: 4 назв. — рос. |
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Computer-aided investigation of fault zone deformation
response to low-amplitude dynamic mechanical actions
S. Astafurov, E. Shilko, A. Grigoriev, A. Panchenko, S. Psakhie, 2010
Institute of Strength Physics and Materials Sciences, SB RAS, Tomsk, Russia
astaf@ispms.tsc.ru
An important direction in mechanics is investi-
gation of features of mechanical response of geolo-
gical media. An important feature of geomedium is
that its fragments are in complex stressed state.
Relation of internal stresses to strength charac-
teristics of interfacial regions (faults and cracks)
appreciably defines deformation and relaxation ca-
pacity of the mechanism concerned with relative
block displacement. As the shear stress at an ac-
tive block boundary reaches limiting (threshold) va-
lue, its local deformation mode can change qualita-
tively from slow deformation (creeping) to dynamic
deformation (referred to as unsTable sliding). Note
that according to modern notion, acts of dynamic
block sliding are seismogenerating events those
magnitude can reach 6—7. Thus, an urgent task in
geomechanics is to develop methods of estimating
the local stress state at active interfaces of frag-
ments of rock massifs or the earth’s crust. Theo-
retical studies as well as experiments on pres-
tressed rock samples and fragments of plane dis-
continuities in rock massifs revealed an important
effect consisting in deformation response of geo-
medium to dynamic perturbations of stress state in
form of irreversible relative displacement of blocks.
This allowed different authors to formulate the idea
anomaly of intense shear stresses. Most zones of
methane accumulation predicted by a set of indepen-
dent techniques are also connected with this anoma-
ly. At the second stage for more detailed analysis of
deformation processes in sedimentation mass within
the limits of mine field analysis of attitude of coal seam
m3 was made. As an outcome we received a layout of
local folding that complicates close monoclinal bed-
ding of this seam and represents difference of the seam
surface and its approximating surface which is poly-
nomial of third order. Comparing a layout of local folds
with dynamic phenomena and predicted zones of
methane accumulation we can insist that majority of
them is confined to gradient zone of local folds. The
nature of this zone is closely connected with the pro-
cesses that are embodied in anomalies of intensity of
References
Antsiferov A. V., Golubev A. A., Kanin V. A., Tirkel M. G.,
Zadara G. Z., Uziyuk V. I., Antsiferov V. A., Suyar-
ko V. G. Gas content and methane resources of
coal basins in Ukraine. Vol. 1. — Donetsk: Veber,
2009. — 456 p. (in Russian).
Dovbnich M. M. Disturbance of geoisostasy and tec-
tonoshere stressed state // Geophys. J. — 2008.
— 30���������� ���
���
���(in Russian).
local shear stresses. Regularities determined within
the limits of A. F. Zasyadko Mine field confirm as-
sumptions on connection of certain components of
stress field caused by disturbance of equilibrium state
with deformation processes developed in sedimenta-
tion mass and zones of development of dynamic pro-
cesses embodied in it.
The authors are convinced that in investigation
of dynamic phenomena in geologic environment,
independently of their scale — earthquakes, rock
bursts, gas-dynamic phenomena and others — the
most important element is study of all whole fac-
tors, starting from planetary and ending by local
ones, which result in disturbance of equilibrium state
of the planet and cause occurrence of mechanical
stresses in the outer shells of the Earth.
Dovbnich M. M., Demianets S. N. Tectonoshere stress
fields caused by distorsion of geoisostasy and
geodynamics of the Azov-Black Sea region // Geo-
phys. J. — 2009. — 31���������� ���
��
��(in
Russian).
Tyapkin K. F. New rotation hypothesis of structure for-
mation and geoisostasy // Geophys. J. — 1980. —
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irk-123456789-1011882016-06-01T03:03:09Z Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions Astafurov, S. Shilko, E. Grigoriev, A. Panchenko, A. Psakhie, S. 2010 Article Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions / S. Astafurov, E. Shilko, A. Grigoriev, A. Panchenko, S. Psakhie // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 5-6. — Бібліогр.: 4 назв. — рос. 0203-3100 http://dspace.nbuv.gov.ua/handle/123456789/101188 ru Геофизический журнал Інститут геофізики ім. С.I. Субботіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
Russian |
| format |
Article |
| author |
Astafurov, S. Shilko, E. Grigoriev, A. Panchenko, A. Psakhie, S. |
| spellingShingle |
Astafurov, S. Shilko, E. Grigoriev, A. Panchenko, A. Psakhie, S. Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions Геофизический журнал |
| author_facet |
Astafurov, S. Shilko, E. Grigoriev, A. Panchenko, A. Psakhie, S. |
| author_sort |
Astafurov, S. |
| title |
Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions |
| title_short |
Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions |
| title_full |
Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions |
| title_fullStr |
Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions |
| title_full_unstemmed |
Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions |
| title_sort |
computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions |
| publisher |
Інститут геофізики ім. С.I. Субботіна НАН України |
| publishDate |
2010 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/101188 |
| citation_txt |
Computer-aided investigation of fault zone deformation response to low-amplitude dynamic mechanical actions / S. Astafurov, E. Shilko, A. Grigoriev, A. Panchenko, S. Psakhie // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 5-6. — Бібліогр.: 4 назв. — рос. |
| series |
Геофизический журнал |
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2025-07-07T10:33:43Z |
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2025-07-07T10:33:43Z |
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