SCIENCE AND INDUSTRY | |
Название | Model representation of anthropogenically modified subsoil as a new object in lithosphere |
DOI | 10.17580/em.2019.02.01 |
Автор | Galchenko Yu. P., Eremenko V. A. |
Информация об авторе | Research Institute for Comprehensive Exploitation of Mineral Resources—IPKON, Russian Academy of Sciences, Moscow, Russia: Galchenko Yu. P., Leading Researcher, Professor, Doctor of Engineering Sciences, schtrek33@mail.ru
College of Mining, National University of Science and Technology—MISIS, Moscow, Russia: |
Реферат | Geoecology of subsoil use is concerned with fundamental geomechanical study into the anthropogenic impact on processes running in the dynamic structure of the lithosphere. It is required to solve a two-side problem including, on the one hand, disclosure of the behavior of natural lithosphere objects under anthropogenic attack aimed at production of mineral resources and, on the other hand, determination of the conditions for the continuous recovery of stable dynamic structures such that no natural disasters initiate or are initiated in the lithosphere. Model representation of the anthropogenic modification of the lithosphere in the course of commercial production of mineral resources needs geophysical imagebuilding of the lithosphere as an element of the global geosystem. Anthropogenically modified subsoil can be presented as an object surrounded by the virgin lithosphere. Inside this object, there is a zone of anthropogenic damage and a zone of the damage-induced change of stress state. The zone of total destruction in the lithosphere (after mineral mining) can be imaged using the known model of movement of density discontinuities in the solid environment in the earth’s gravitational field. In this case, extraction of some part from the lithosphere is presented as the process of growth and movement of discontinuities with zero density. The notion of anthropogenically modified subsoil also includes lithosphere areas (objects) which are altered without change in density. Accordingly, it is critical to delineate the zone of these collateral changes, i.e. the boundary of a new man-made object in the lithosphere. A solid is represented by an ideal continuum where strains due to external forces are only totally reversible if internal stresses are below limiting values of strength of this solid. Inside the solid, different-scale discontinuities are uniformly spread at the spacing much larger than the size of these discontinuities. The discontinuities are responsible for irreversible strains: stresses concentrate and relax with time at these discontinuities. This article presents a general problem, its solution procedure and equations for each specific combination of the lithosphere properties and the nature of anthropogenic modification. The results provide insight into the mechanism of change in the behavior and properties of rock mass in the zone of geophysical ecotone (transient behavior zone) which appears in the natural geophysical environment under anthropogenic disruption of general dynamic balance in the course of mineral mining. The study was supported by the Russian Science Foundation, Project No. 19–17–00034. |
Ключевые слова | Anthropogenically modified subsoil, natural-and-technical systems, different-scale discontinuities, solid, lithosphere, ecotone, strains, stresses, relaxation, elastic and inelastic strains, mineral deposit |
Библиографический список | 1. Trubetskoy K. N., Galchenko Yu. P. Geoecology of subsoil management and eco-geotechnology. Moscow : Nauchtekhlitizdat, 2015. 360 p. |
Полный текст статьи | Model representation of anthropogenically modified subsoil as a new object in lithosphere |