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A. A. Yakovleva
A. A. Yakovleva
Saint-Petersburg Mining University
Saint-Petersburg Mining University

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-10-31
  • Date accepted
    2022-04-26
  • Online publication date
    2022-07-05
  • Date published
    2022-07-13

Identification of structural control factors of primary gold ore occurrences by method of unmanned aeromagnetic survey by the example of the Neryungrisky district of Yakutia

Article preview

The long-term development of the geophysical industry, in which the methods of magnetometry are in maximum demand, as the simplest in instrumental and methodological execution, has determined the development of remote measurement methods implemented both from space and airborne carriers. The necessity to use the latter as an obligatory component of field surveys, providing coverage of significant areas, determines the need for using the unmanned low-tonnage carriers. Their use is implemented to search for predictive elements of structural (spatial, genetic) control of endogenous gold ore occurrences that allow predictive constructions, i.e., solving the problem of increasing gold reserves, which is being performed within the framework of federal programs. The purpose of the survey is to develop a system of instrumental and subsequent interpretation approaches in the organization of unmanned magnetometer survey, implemented for structural and geological mapping by the example of the Neryungrinsky district of Yakutia. Within the framework of the digital model formation of the relief and the anomalous magnetic field, a survey method using an unmanned aircraft, its technical characteristics are considered; the analysis and the author's modification of the office analysis of magnetometry data are performed. Based on the obtained materials, a physical and geological model of the investigated area was created, which is presented in the form of a geological and structural cut, accompanied by the physical characteristics of the structural and material complexes. The refinement of the physical and geological model was implemented by a joint morphostructural analysis of the remote base and the anomalous magnetic field using the results of quantative interpretation of the anomalous magnetic field. The result of the study is presented by an updated geological basis with the allocation of promising ore sites for their detailing as part of the planned large-scale geological and geophysical surveys. The scientific novelty of the work consists in the synthesis of the tried and tested methods of unmanned aeromagnetometric measurements and geostructural reconstructions, which allow the processing of both potential and non-potential geofields.

How to cite: Movchan I.B., Shaygallyamova Z.I., Yakovleva A.A. Identification of structural control factors of primary gold ore occurrences by method of unmanned aeromagnetic survey by the example of the Neryungrisky district of Yakutia // Journal of Mining Institute. 2022. Vol. 254. p. 217-233. DOI: 10.31897/PMI.2022.23
Geology
  • Date submitted
    2018-11-20
  • Date accepted
    2018-12-28
  • Date published
    2019-04-25

REFINED ASSESSMENT OF SEISMIC MICROZONATION WITH A PRIORI DATA OPTIMISATION

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The work is devoted to the issues of seismic microzonation representativeness, which is amongst the mandatory assessments that precedes civil and industrial construction. In addition to the practical approach and in accordance with the normative documentation, the authors propose parametric interpretation of the remote basis by means of tracing geodynamic zones and elements of the geoblock structure, where the leading marker of seismogenic risk zones is the anomaly of spatial variability of the geofield, coinciding with the discordant intersection of localised land structures. Verification of this marker is achieved by displaying a cartographic distribution image within the range of the seismic point increment, detailed on the basis of approximation dependencies.

How to cite: Movchan I.B., Yakovleva A.A. REFINED ASSESSMENT OF SEISMIC MICROZONATION WITH A PRIORI DATA OPTIMISATION // Journal of Mining Institute. 2019. Vol. 236. p. 133. DOI: 10.31897/PMI.2019.2.133
Modern methods and systems for indication and monitoring of environmental components
  • Date submitted
    2012-10-09
  • Date accepted
    2012-12-28
  • Date published
    2013-04-01

Primary forecasting method in the problem of reducing loads on landscape under planning large-scale geological and ecological surveys

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The method is based on the formal lineament decoding the half-tone field of brightness of multispectral satellite slides. It includes the procedures  of point  of extremum tracing, rotation  and generalization with using angular and dispersion criteria. The result is the set of structuretectonic maps of different level of generalization. These maps are additionally processed for discovering the factors of structural control of ore objects of different ranges. Here the leading criteria are the periodicity, the areas of discordant relationship, and the singularities on the branches of logarithmic spirals. Such approach admits the forecast implementation with the information about reference objects and without this  one.

How to cite: Movchan I.B., Yakovleva A.A., Asyanina V.Y. Primary forecasting method in the problem of reducing loads on landscape under planning large-scale geological and ecological surveys // Journal of Mining Institute. 2013. Vol. 203. p. 190.
Environmental safety and risk assessment of technological impacts
  • Date submitted
    2012-10-30
  • Date accepted
    2012-12-13
  • Date published
    2013-04-01

Seniority fixing in north regions: map-related project with estimation of climatic factors

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The project is focused on the comparative analysis of ecological-climatic data, population  and medical statistics within Russia, in particular, its North region. The investigation includes: development of original algorithm of automatic tracing the isolines for analogous maps digitizing; using ecological-demography and generalized medical information for allocation of areas of comfort perception of climate; digitized map zoning on the base of mentioned (reference) areas  and hazard index computing.

How to cite: Movchan I.B., Yakovleva A.A., Prokopova S.I. Seniority fixing in north regions: map-related project with estimation of climatic factors // Journal of Mining Institute. 2013. Vol. 203. p. 220.
Technical and environmental safety of mining industry
  • Date submitted
    2008-07-03
  • Date accepted
    2008-09-14
  • Date published
    2009-01-01

Method of structural-geological forecast at processing of space images in the task of optimization of search for mineral deposits

Article preview

The method is based on the formal lineament decoding the half-tone field of brightness of multispectral satellite slides. It includes the procedures of point of extremum tracing, rotation and generalization with using angular and dispersion criteria. The result is the set of structure-tectonic maps of different level of generalization. These maps are additionally processed for discovering the factors of structural control of ore objects of different ranges. Here the leading criteria are the periodicity, the areas of discordant relationship, and the singularities on the branches of logarithmic spirals. Such approach admits the forecast implementation with the information about reference objects and without this one.

How to cite: Movchan I.B., Yakovleva A.A. Method of structural-geological forecast at processing of space images in the task of optimization of search for mineral deposits // Journal of Mining Institute. 2009. Vol. 180. p. 27-32.