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Vol 148 No 1
Pages:
134-138
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Research article
Without section

Stress concentration and scale factor in the fracture of anisotropic rock

Authors:
Yu. M. Lebedkin1
A. S. Matorin2
V. G. Shemenev3
About authors
  • 1 — Institute of Mining of Ural Branch of RAS
  • 2 — Institute of Mining of Ural Branch of RAS
  • 3 — Institute of Mining of Ural Branch of RAS
Date submitted:
2000-06-23
Date accepted:
2000-07-02
Date published:
2001-01-01

Abstract

Fracture of rocks for industrial or other needs (hammering, drilling, extraction of piece rock, processing, etc.) regardless of the method and technology of loading is a local short-term intensive impact, proceeding according to the scheme: load application - deformation - growth of micro- and then macro-damages - growth of cracks - fracture. In this regard, the applied theory of rock failure should not take into account rheology and relaxation, i.e., the model of such failure does not take into account the evolution of micro- and macro-damages in the rock. These phenomena can be accounted for by the ultimate stress or strain in the current state of the fractured rock volume.

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References

  1. Куклин И.С. Сопротивляемость скальных горных пород разрушению многократными динамическими нагрузками /И.С.Куклин, А.С.Маторин, В.Г.Кузнецов // Буровзрывные работы на рудных карьерах. Свердловск, 1972. (Труды ИГД МЧМ СССР, № 36).
  2. Маторин А. С. Исследование эффективности вторичного дробления горных пород на карьерах сосредоточенными динамическими нагрузками: Автореф. дис канд.техн.наук / ИГД МЧМ СССР. Свердловск, 1970.
  3. Разрушение. Т.1. Микроскопические и макроскопические основы механики разрушения: Пер. с англ. М.: Мир, 1973.
  4. Си и Макдональд В. Применение механики разрушения к инженерным задачам, критерий разрушения - плотность энергии деформации: Пер. с англ. М.: ВЦП науч.-техн. мет. И инф., 1975.

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