Monitoring of the stress-strain state of open pits’ adjacent rock mass

Panzhin, A. A.; Panzhina, Natalia

doi:10.1051/e3sconf/202019204017

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Необходимо отметить, что приведенный способ реализации цикличных короткопериодных деформаций зафиксирован при выполнении только одной серии диагностики геодинамической активности массива, и, скорее всего, не будет постоянным во времени. В связи с постоянно протекающими в реальном массиве горных пород явлениями деструкции и самоорганизации [113], при формировании консолидированных геоблоков, неизменно будет меняться и характер межблочного взаимодействия.…”

Section: инструментальные маркшейдерскоunclassified

Geoinformation technologies to support mining processes

Sokolov,

Kornilkov,

Panzhin

2023

Mining Industry Journal

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The paper presents the tasks, methods and results of comprehensive research in geoinformatics and in development of raw material base of the mining and metallurgical complex that are conducted at the Institute of Mining of the Ural Branch of the Russian Academy of Sciences. The main objectives of the research include evaluation of methods of information and analytical support for the use of subsurface resources, means and methods of multi-tier processing of geodata, digital modeling of geo-objects and complex geomonitoring; substantiation of methods of complex geomonitoring that ensure the integrated development of subsurface resources of the Earth with a safe level of anthropogenic impact on the geo-environment; development of methods of information and analytical support for subsurface resources to solve the challenges of integrated development of mineral raw materials. As the result, criteria for assessing the protection of mining territories are justified; the intensity of the self-restoration process of areas disturbed by mining operations is estimated; a methodical approach to the accumulation and processing of geodynamic and geoinformation monitoring data from mining territories in mutual geospatial correlation is proposed; a systematization of factors, objects and types of risks in subsoil use that generate negative effect. This approach helps to justify the range of geodata required to assess the probability of a specific type of risk.

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Section: инструментальные маркшейдерскоunclassified

Geoinformation technologies to support mining processes

Sokolov,

Kornilkov,

Panzhin

2023

Mining Industry Journal

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Accuracy Assessment of the Principal Strains in Deformation Analysis

Bannikov,

Gordeev

2023

SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings

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Research Object and Relevance. The main components of the strain tensor and their accuracy assessment are the research objects in this work. When conducting monitoring using geodetic methods, it is usually not enough to determine only the displacements of reference points; it is also necessary to determine the presence and magnitude of deformations. This task is directly related to the accuracy assessment of such characteristics as principal strains, dilatation, shear strains, and rotation. Research Methods. In conducting this research, the authors used a system of equations arising on a local subdomain of triangular shape in the finite element method for a twodimensional deformation model. The parametric principle of accuracy assessment was applied, where the components of the strain tensor were taken as parameters. Results. More rigorous formulas for the mean square error functions of principal strains have been found. The influence on their accuracy assessment of both the triangle shape and the directions of principal strains is shown. Based on geodynamic monitoring data of a tailings dam, mathematical modeling of the influence of the finite element shape on the possible error in the accuracy assessment of principal strains was carried out. Discussion. The results of analyzing the influence of covariances that arise naturally between the components of the strain tensor show the most interesting results when assessing the accuracy of principal strain components. The non-symmetry of principal strain accuracy estimates for a triangular element shape other than an equilateral triangle is convincingly shown. Conclusion. This study demonstrates the need for more rigorous approaches to assessing the accuracy of deformation characteristics. Incorrect interpretation of monitoring results can lead to both unnecessary labor and financial costs, as well as fatal consequences due to incorrect assumptions in calculations.

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Monitoring of the stress-strain state of open pits’ adjacent rock mass

Cited by 2 publications

References 4 publications

Geoinformation technologies to support mining processes

Geoinformation technologies to support mining processes

Accuracy Assessment of the Principal Strains in Deformation Analysis

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