Submit an Article
Become a reviewer
A. A. Pavlovich
A. A. Pavlovich
Saint-Petersburg Mining University
Saint-Petersburg Mining University

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2022-05-25
  • Date accepted
    2023-02-02
  • Date published
    2023-08-28

Evaluation of the shear strength of rocks by cracks based on the results of testing samples with spherical indentors

Article preview

Experimental data on the relationship of the residual shear strength of rocks in closed cracks with the functional characteristics of intact rocks – the tensile and compressive components of adhesion, the roughness of the crack surfaces, and the level of normal stresses are presented. A unified integrated approach determines the shear strength of intact and destroyed rocks, the residual shear strength of closed rough cracks has been developed. The approach provides for the selection of stress intervals corresponding to different types of fracture, for each of which a strength criterion is proposed, expressed in terms of functional characteristics of intact rock. An express method for estimating the residual shear strength of rocks by cracks with a rough surface has been developed, in which an improved method of loading samples with spherical indentors is used as a basic test method. The express method implements the transition from the data of mechanical tests of samples with spherical indentors to the shear strength indicators for cracks in the rock mass, taking into account the level of normal stresses and the roughness of the crack surfaces measured in field conditions. In this case the roughness scale developed by Barton is used. The express method is informative and available in the fieldwork.

How to cite: Korshunov V.A., Pavlovich A.A., Bazhukov A.A. Evaluation of the shear strength of rocks by cracks based on the results of testing samples with spherical indentors // Journal of Mining Institute. 2023. Vol. 262. p. 606-618. DOI: 10.31897/PMI.2023.16
Mining
  • Date submitted
    2019-04-27
  • Date accepted
    2019-07-10
  • Date published
    2019-10-27

Estimation of Rock Mass Strength in Open-Pit Mining

Article preview

The paper presents results of an experimental study on strength characteristics of the rock mass as applied to   the assessment of open-pit slope stability. Formulas have been obtained that describe a correlation between ultimate and residual strength of rock samples and residual shear strength along the weakening surface. A new method has been developed to calculate residual interface strength of the rock mass basing on data from the examination of small-scale monolith samples with opposing spherical indentors. A method has been proposed to estimate strength characteristics (structural weakening coefficients and internal friction angles) of the fractured near-slope rock mass. The method relies on test data from shattering small-scale monolith samples with spherical indentors, taking into ac- count contact conditions along the weakening surface, and can be applied in the field conditions. It is acceptable to use irregular-shaped samples in thetests.

How to cite: Pavlovich A.A., Korshunov V.A., Bazhukov A.A., Melnikov N.Y. Estimation of Rock Mass Strength in Open-Pit Mining // Journal of Mining Institute. 2019. Vol. 239. p. 502. DOI: 10.31897/PMI.2019.5.502
Mine survey
  • Date submitted
    2012-11-24
  • Date accepted
    2013-01-28
  • Date published
    2013-05-01

The method of the geometric addition of forces over the most stressed slip surface in estimation of open-pit slope stability

Article preview

Consideration is given to the method of the geometric addition of forces over the most stressed slip surface in estimation of open-pit slope stability. The limits of its application are defined.

How to cite: Mochalov A.M., Pavlovich A.A., Kubarev V.A. The method of the geometric addition of forces over the most stressed slip surface in estimation of open-pit slope stability // Journal of Mining Institute. 2013. Vol. 204. p. 110.
Mine survey
  • Date submitted
    2012-11-19
  • Date accepted
    2013-01-21
  • Date published
    2013-05-01

Analysis of dissemination of surface deformation at open pit mining

Article preview

The results of modeling and estimation based on the finite element method, of propagation boundaries of horizontal deformations with due account of structural features of rock mass, and also strength and deformational properties of various lithological differences composing the open-pit slope are represented.

How to cite: Budilova V.V., Pavlovich A.A., Ikonnikov D.A. Analysis of dissemination of surface deformation at open pit mining // Journal of Mining Institute. 2013. Vol. 204. p. 117.
Mine survey
  • Date submitted
    2011-11-30
  • Date accepted
    2012-01-04
  • Date published
    2012-05-01

Evaluation of the stability of slopes with using native and foreign software

Article preview

With permanent increasing of depth of open pit exploitation stress strain behavior of side array changes, so the choice of the necessary and corresponding to reality  geomechanical scheme is an important issue. Currently,there is large number of software to estimation the stability slopes. This article provides a comparison of different programs based  on numerical method and the method of limiting  equilibrium.

How to cite: Mochalov A.M., Ishutin S.A., Pavlovich A.A., Sapachev R.Y. Evaluation of the stability of slopes with using native and foreign software // Journal of Mining Institute. 2012. Vol. 199. p. 219.
Innovation in designing of mining plants
  • Date submitted
    2011-10-27
  • Date accepted
    2011-12-27
  • Date published
    2012-04-01

Interaction between seismic activity in Kuzbass and open-pit operations

Article preview

The analysis of graphs shows seismic events repeatability and seismic events distribution during the day, by days of the week and by months was made. It is shown, that seismic activity in Kuzbass region has a mixed natural and manmade character and figures of repeatability have interim character, the majority of seismic events occur in the time of blasting operations in open   pit mining, but the distribution by month of the year corresponds to planetary pattern – the larg est number of events takes place in March, August and December. It  was suggested that the  spring increase in  seismic activity lead to reduced  stability of mine slopes during the snowmelt  of landslides formation.

How to cite: Tsirel S.V., Pavlovich A.A. Interaction between seismic activity in Kuzbass and open-pit operations // Journal of Mining Institute. 2012. Vol. 198. p. 174.
Present-day problems of geomechanics, mining practice and innovation technologies in mining engineering
  • Date submitted
    2011-09-12
  • Date accepted
    2011-11-21
  • Date published
    2012-03-01

Anticipating of probable strains slope of coal strip mine «Chernigovets» at seismically impact

Article preview

Estimation of earthquakes seismic effect for slope stability of coal strip mine «Chernigovets» in Kemerovo region by means of pseudo-static analysis and physical modeling is conducted. Relevancy to take into account not only maximum accelerations but also continuance of oscillations is showed.

How to cite: Shabarov A.N., Tsirel S.V., Zuev B.Y., Pavlovich A.A. Anticipating of probable strains slope of coal strip mine «Chernigovets» at seismically impact // Journal of Mining Institute. 2012. Vol. 197. p. 143.
Problems in geomechanics of technologeneous rock mass
  • Date submitted
    2009-07-05
  • Date accepted
    2009-09-27
  • Date published
    2010-01-01

The methods of strength definition for the rock mass properties applying to the open mining cut

Article preview

The review of factors influencing rock mass strength is given. Methods of definition for sample strength changeover to rock mass are considered in the article.

How to cite: Pavlovich A.A. The methods of strength definition for the rock mass properties applying to the open mining cut // Journal of Mining Institute. 2010. Vol. 185. p. 127-131.