scholarly journals GEODYNAMICS

GEODYNAMICS ◽  
2021 ◽  
Vol 1(30)2021 (1(30)) ◽  
pp. 17-24
Author(s):  
Andrii Zyhar ◽  
◽  
Ihor Savchyn ◽  
Yuriy Yushchenko ◽  
Mykola Pasichnyk ◽  
...  
Keyword(s):  
Mathematical Analysis ◽  
Horizontal Displacement ◽  
Technical System ◽  
Practical Significance ◽  
Monitoring Methods ◽  
Geotechnical Monitoring ◽  
Technogenic Loads ◽  
Promising Area ◽  
Geodynamic Processes ◽  
Dispersive Soils

Purpose. The aim of the research is mathematical analysis and forecasting of dispersive soils behaviour based on the study of inclinometric observations data in the area of the natural-technical system of the Dnister PSPP. Methodology. The research methodology is based on mathematical analysis and modelling of processes occurring in the mountain massif on which the Dnister PSPP is located, using the finite element method. Results. The paper presents an analysis of the results of geotechnical monitoring of the behaviour of dispersive soils, implemented on the basis of inclinometric measurements on the territory of the Dnister PSPP. Quantitative parameters of horizontal displacement distribution in inclinometric wells are established. They made it possible to detect negative dynamics in the geological horizons N1-2ap and N1p+v, which is apparently caused by technogenic load caused by the Dnister upper reservoir. The behaviour of dispersive soils under the influence of natural and technogenic loads has been modelled. Based on the simulation results, the change of the sign of deformations under the influence of additional load, which can be the filling of the Dnister upper reservoir, is confirmed. Obviously, the use of this method alone does not allow full detecting and tracking modern geological, seismic and geodynamic processes. A combination and detailed analysis of different monitoring methods (geophysical, geodetic, parametric, vibrometric, hydrogeological, temperature, visual-instrumental and others), as well as modelling the behaviour of the object under the influence of natural and technogenic factors is optimal. Such simulations could be used in the design of other objects of this type, so this is a promising area for further research. Originality. For the first time, a mathematical analysis and forecasting of the behaviour of dispersed soils in the area of the natural and technical system of the Dnister PSPP was conducted on the basis of studying the data of inclinometric observations. Practical significance. The proposed technique can be used in the design of other objects of this type, as modelling the behaviour of the object under the influence of natural and technogenic factors makes it possible to assess possible risks and prevent them.

Dynamic Stability Analysis of Mountain Hollow Thin-Walled High Pier under Impact Load

2015 ◽  
Vol 727-728 ◽  
pp. 553-558
Author(s):  
Hong Tao Yang ◽  
Rui Li ◽  
Zhi Qiang Chen ◽  
Zhang Yue
Keyword(s):  
Stability Analysis ◽  
Dynamic Stability ◽  
Impact Load ◽  
Horizontal Displacement ◽  
Practical Significance ◽  
Mountain Area ◽  
Load Amplitude ◽  
Response Characteristics ◽  
Thin Walled ◽  
High Pier

Hollow thin-walled high pier is a common form of high pier in mountainarea, so it is of practical significance to the dynamic stability analysis ofhollow thin-walled high pier in mountain area. This paper is taking themountainous area of a hollow thin-walled high pier as the background, and theestablishment of the fiber model with Midas for dynamic elastic-plastic timehistory analysis. The results show that: the hollow thin-walled high pier underthe impact load, load amplitude is lower than the critical load,and the dynamic response characteristics of thestructure of the value parameter i.e. horizontal displacement at pier top increaseslinearly with the load amplitude. When the load amplitude is larger than thecritical load, the horizontal displacement of pier top increases with theincrease of load amplitude nonlinearly. Power under dynamic load instabilitycritical load is about 80% under static load.

scholarly journals PROSPECTS FOR THE DEVELOPMENT OF INTERNATIONAL FACILITY-TOURISM IN UKRAINE. CHALLENGES OF THE COVID-19 PANDEMIC

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
O.O. Kotenko ◽  
Yu. Halynska ◽  
M.D. Domashenko ◽  
V.O. Shcherbachenko
Keyword(s):  
Full Range ◽  
Economic Effect ◽  
Tourism Industry ◽  
Practical Significance ◽  
Anthropogenic Activity ◽  
Underground Engineering ◽  
Engineering Structures ◽  
Industrial Facilities ◽  
International Tourist ◽  
Promising Area

The article is devoted to defining the essence of facility-tourism as a promising area within the tourism industry, which can potentially increase the attractiveness of Ukraine for foreign tourists and become a powerful competitive center in the redistribution of international tourist flows. The need to improve existing approaches to understanding industrial tourism (common term) has been demonstrated because it does not take into account the full range of opportunities associated with visiting abandoned cities, towns and buildings, existing and abandoned machines and industrial facilities, land and underground. engineering structures, exclusion zones and other objects of anthropogenic activity. The article proves that having an extraordinary technological, industrial, engineering potential, Ukraine can create hundreds of additional facilities that will have not only practical significance, but also financial and economic effect. In addition, the launch of facility-tourism in Ukraine will create additional opportunities for the development of related areas of services - hotel and restaurant business, museums, transport, etc., and will be the basis for creating new jobs, which is certainly important for modern Ukraine. Special attention in the article to the define the prospects and place of international facility-tourism in the tourism industry of Ukraine. The method of testing hypotheses proved that its initiation will certainly have a positive effect. The authors also paid attention to the development of the industry during the pandemic. It was proved that this type of tourism can fully work even in conditions of quarantine restrictions due to the possibility of organizing facility tours for small groups of foreign nationals.

scholarly journals APPLICATION OF PHOTOGRAMMETRIC METHODS FOR GEOTECHNICAL MONITORING OF EMERGENCY BUILDINGS AND STRUCTURES

2021 ◽  
pp. 27-43
Author(s):  
B. A. Popov ◽  
N. B. Khakhulina ◽  
Yu. S. Netrebina
Keyword(s):  
Nuclear Power ◽  
State Of The Art ◽  
Building Structures ◽  
Monitoring Methods ◽  
Maintenance And Repair ◽  
Geotechnical Monitoring ◽  
Technical Issues ◽  
Manual Methods ◽  
The Stability

Statement of the problem. One of the relevant scientific and technical issues for improving the state-of-the-art and advanced monitoring methods is alarm construction (including in the minds of ordinary minds) with the emergence of uncompromising objects, and the future of unfinished control. It is quite common that conditions arise when it is not possible to perform a full-fledged monitoring of certain types of deformations of building structures by means of traditional methods. It is required to develop universal, superior and manual methods for the control of different geometric parameters of structures for taking timely measures to ensure the stability and stability of the structure and enabling the transition of the structure in the interconnection of the robotic mill as well. Results. All of the considered methods of statistics of the ways to control the output and have been revised based on the maintenance and repair of the conserved Voronezh nuclear power plant for heat supply.Conclusions. The methods of calculating deformations and the quality of the preparation of alarm constructions for metric photography allowance to carry out repeated monitoring of the technical mill with the necessary accuracy.

scholarly journals GEODESY, CARTOGRAPHY, AND AERIAL PHOTOGRAPHY

2021 ◽  
Vol 93,2021 (93) ◽  
pp. 27-34
Author(s):  
Kornyliy Tretyak ◽  
◽  
Ivan Brusak ◽  
Keyword(s):  
High Precision ◽  
Practical Significance ◽  
Control Points ◽  
Mean Square ◽  
Border Area ◽  
Height System ◽  
Geodynamic Processes ◽  
The Mean ◽  
The Baltic ◽  
Two Stages

Purpose. The purpose of this work is obtaining connections between the Baltic and European height systems based on the I class leveling between the Ukrainian and Polish control points of the base vertical networks and construction of the quasigeoid surface on the border area. Method. Full integration of the hight system of Ukraine into the European vertical reference system (EVRS) consists of two stages: modernization of the height network of Ukraine through its integration into the United European leveling network UELN; construction and use as a regional vertical date the model of high-precision quasigeoid, which will be consistent with the European geoid EGG2015. The analysis of methods of high-precision leveling in Ukraine and Poland, and also the analysis of methods of construction of quasigeoid models in these countries is performed. Results. For integrating the Ukrainian hight system into the UELN/EVRS2000 system, the Ukrainian side performed I class geometric leveling along two lines: Lviv - Shehyni - Przemysl and Kovel - Yagodyn - Chelm with total length of 196 km. The root mean square systematic error on both lines of leveling was s<0.01 mm/km. In turn, the mean square random error along the line Lviv - Shehyni - Przemysl is h=0.29 mm/km, and along the line Kovel - Yagodyn - Chelm is h=0.27 mm/km. For double control on the cross-border part, the Polish side performed high-precision leveling with a length of 33 km. The differences between the Ukrainian and Polish leveling in all sections are within the tolerance. The analysis of influence of geodynamic phenomena on control of high-precision leveling is carried out. GNSS-leveling was performed on all fundamental and ground benchmarks, as well as horizontal marks. These measurements were used to build a quasigeoid model for the border area of Ukraine. The MSE of the obtained quasigeoid model is about 2 cm, which corresponds to the accuracy of the input information. Scientific novelty and practical significance. The connection of the Ukrainian and European height systems will ensure Ukraine’s integration into the European economic system, participation in international research of global ecological and geodynamic processes, study of the Earth’s shape and gravitational field and mapping of Ukraine using navigational and remote-sensing satellite technologies. Calculation of a high-precision model of a quasigeoid on the Ukraine area in relation to the European height system, agreed with the European geoid EGG2015, will allow to obtain gravity-dependent heights using modern satellite technologies.

scholarly journals An underground three-dimensional displacement measurement system

2018 ◽  
Vol 232 ◽  
pp. 02053
Author(s):  
Yifeng Cheng ◽  
Qing Li ◽  
Nanying Shentu ◽  
Chao Zhang
Keyword(s):  
Measurement System ◽  
Tilt Angle ◽  
Group Structure ◽  
Three Dimensional ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Displacement Sensor ◽  
Monitoring Methods ◽  
Geological Disaster ◽  
On Line

With the development of society, the damage of geological disaster to people's life and property is more serious, so the improvement of monitoring means of geological disaster is particularly urgent, there are some shortcomings in traditional monitoring methods, and it is impossible to measure the three-dimensional displacement of underground. The authors have designed an integrated three-dimensional displacement sensor to measure underground horizontal displacement and vertical displacement and tilt angle, and realize the real-time on-line monitoring of underground three-dimensional displacement visually through multi-group structure co-measurement.

scholarly journals Variative Components of the University Course of Mathematical Analysis: The Experience of Introduction into the Practice of Teaching

2020 ◽  
Vol 22 (1) ◽  
pp. 113-145
Author(s):  
S. I. Кalinin ◽  
L. V. Pankratova
Keyword(s):  
Mathematical Analysis ◽  
Practical Significance ◽  
Federal State ◽  
Additional Information ◽  
Research Activities ◽  
Interdisciplinary Approaches ◽  
Variable Content ◽  
University Course ◽  
The University ◽  
Practice Of Teaching

Introduction. The change in general paradigm of education, its transition to a competent model and the permanent change in federal state standards of higher education have created the problem associated with selecting the content of course programmes studied by university students. In the field of mathematical knowledge, the problem of strengthening students’ mathematical training is particularly acute in connection with the declared task, in which mathematical analysis is central. One of the ways to solve this problem is to distinguish the invariant and variable components in the content of the university course.The aim of the present research is to describe the content of variable components developed by the authors for the university course of mathematical analysis and to present the results of their introduction into the practice of teaching.Methodology and research methods. The conducted research is based on the principles of continuity and systemacity of modern education, its current concepts (fundamentalisation, humanisation, humanitarisation, individualization and differentiation) and the provisions of competency-based, activity-based, personality-oriented and interdisciplinary approaches to teaching. The theoretical analysis and experiment were used as the main methods, the results of which were evaluated through empirical and praximetric methods.Results and scientific novelty. The present study, carried out for many years at Vyatka State University, has shown that the system-forming factor of variable education, determining the means and forms of its implementation, is the variable content of education. Firstly, this particular content provides additional information on key concepts, theories and mathematical analysis, taking into account the specifics of students’ specialties, which facilitated their successful professionalism. Secondly, the variable content of education offers the possibility to systematically rethink and rapidly revise educational material, taking into account new scientific facts and discoveries. Finally, it can develop cognitive autonomy of junior students, encouraging them to carry out regular and informal research activities. The coverage of students of several mathematical directions of education, their obligatory involvement in independent research activities and support for mechanisms of interdisciplinarity and transprofessionalism ensured the scientific novelty of the research undertaken. The results of the formation of professional competencies of future graduates obtained during pedagogical measurements (questionnaires, surveys of students, observation of their educational and research achievements) confirmed the effectiveness of using the designed variable components of the discipline “Mathematical Analysis” in the learning process.Practical significance. The research material and the authors’ conclusions described in the present article can be useful for methodologists of higher school and teachers of mathematics interested in improving the quality of mathematical training in universities.

scholarly journals Organization of E-Learning with Incorporation of an Online Component

2020 ◽  
Vol 12 ◽  
pp. 3-7
Author(s):  
Nelli I. Diveeva ◽  
◽  
Ekaterina A. Dmitrikova ◽  
Ilya A. Vasilyev ◽  
◽  
...  
Keyword(s):  
Educational Process ◽  
Practical Significance ◽  
Educational Organizations ◽  
Network Learning ◽  
Joint Activities ◽  
Key Characteristics ◽  
Promising Area ◽  
E Learning ◽  
Learning Issues ◽  
Network Form

The purpose of this article is to formulate recommendations for organizing network form of learning using the online component. The advantages of using the online component in the educational process are outlined. Methodology: in the process of preparing the article, the dialectical method was used, which consists in the application of methods of analysis, scientific generalization. Conclusions. The authors consider the organization of network form of learning as a promising area of joint activities of educational organizations and other organizations that have the resources necessary for the implementation of educational programs. The article formulates the key characteristics of network form of learning, analyzes changes in the regulation of issues of organizing network learning. Scientific and practical significance. Taking these aspects into account, the authors propose possible models for including the online component in the organization of network form of learning. Issues are considered in relation to higher education.

scholarly journals ALGORITHM FOR DETECTING DEFECTS AT CONSTRUCTION OBJECTS

2021 ◽  
pp. 35-42
Author(s):  
Е.С. Панькина ◽  
Н.В. Дорофеев ◽  
А.В. Греченева
Keyword(s):  
Neural Network ◽  
Early Detection ◽  
Defect Formation ◽  
Monitoring Systems ◽  
Monitoring Methods ◽  
Construction Sites ◽  
Geotechnical Monitoring ◽  
Geotechnical System ◽  
The Stability ◽  
Detection Of Defects

Статья посвящена разработке алгоритма раннего обнаружения дефектов на объектах строительства, применяемого в системах геотехнического мониторинга для повышения точности прогнозных оценок устойчивости сооружений. Не смотря на имеющиеся наработки в сфере геотехнического мониторинга и оценки устойчивости геотехнических систем, возникающие за проектные ситуации, которые приводят к возникновению аварий и катастроф техногенного и природного характера, показывают необходимость дальнейшего развития алгоритмического обеспечения систем геотехнического мониторинга. Приведена блок-схема алгоритма раннего обнаружения дефектов на объектах строительства, построенного на основе авторского подхода выделения ключевых точек геотехнического мониторинга, методов теории бифуркаций, а также нейросетевого анализа. Отличительной особенностью разработанного алгоритма кроме применения нейронной сети для подстройки под геотехнические особенности, является возможность динамической корректировки диапазонов варьирования пределов устойчивости геотехнической системы, заложенных в проектной документации на исследуемый объект строительства. В описаны результаты практического применения разработанного алгоритма в системе геотехнического мониторинга (наблюдения осуществлялись с 2016 по 2021 год) параметров грунтового основания, а также физико-механических параметров элементов конструкций фундамента и сооружения. В качестве сооружения выступало трехэтажное здание, возведенное на кирпичном ленточном фундаменте. Объект исследования находится в г. Муроме Владимирской области. В ходе применения разработанного алгоритма были получены оценки мест образования дефектов в контрольных точках и их локализация, которые были подтверждены в ходе дальнейших наблюдений. Разработанный алгоритм может применяться в системах геотехнического мониторинга на протяжении всего жизненного цикла геотехнической системы. The article is devoted to the development of an algorithm for early detection of defects at construction sites, which is used in geotechnical monitoring systems to improve the accuracy of predictive estimates of the stability of structures. The emerging design situations that lead to accidents and catastrophes of a man-made and natural nature show the need for further development of algorithmic support for geotechnical monitoring systems, despite the existing developments in the field of geotechnical monitoring and assessment of the stability of geotechnical systems. A flowchart of an algorithm for early detection of defects at construction sites is presented, based on the author's approach to identifying key points of geotechnical monitoring, methods of bifurcation theory, as well as neural network analysis. A distinctive feature of the developed algorithm, in addition to using a neural network to adjust to geotechnical features, is the possibility of dynamically adjusting the ranges of variation of the stability limits of the geotechnical system laid down in the design documentation for the construction object under study. The results of the practical application of the developed algorithm in the geotechnical monitoring system (observations were carried out from 2016 to 2021) of the parameters of the soil base, as well as the physical and mechanical parameters of the structural elements of the foundation and structure are described. The structure was a three-storey building erected on a brick ribbon foundation. The object of research is located in the city of Murom, Vladimir region. During the application of the developed algorithm, estimates of the places of defect formation at control points and their localization were obtained, which were confirmed during further observations. The developed algorithm can be used in geotechnical monitoring systems throughout the entire life cycle of a geotechnical system.

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