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MATHEMATICAL MODELING OF WATER WAVE MOTION IN A RESERVOIR CAUSED BY THE INTRUSION OF A LANDSLIDE ARRAY

I. D. Muzaev, V. G. Sozanov

The construction of dams and reservoirs in mountainous and foothill areas poses a number of urgent tasks for designers and researchers related to the wave movement of water in a reservoir with a complex geometric configuration. The collapse of significant masses of rock into the reservoir basin as a result of a landslide phenomenon provokes high surface waves, leading to catastrophic natural disasters in the form of victims and destruction. Designers, construction organizations and maintenance services are required to assess the expected wave increase in water level through the dam crest, as well as the zone and degree of flooding of the area in the reservoir bays and along the river gorge, depending on the geometric, kinematic and dynamic characteristics of potentially possible landslide massifs, mudslides and avalanche flows. In this way, you can predict and then prevent or mitigate the consequences and damage that can cause the formation of destructive waves. In addition to the above problem, this article develops a mathematical model of the wave movement of water in a reservoir, when the movement is caused by the intrusion of a landslide rock mass or a high-speed mudflow into its bowl. The model is the initial boundary value problem of hydrodynamics and hydraulics of gravitational waves. In contrast to previous works, the developed mathematical model takes into account the planned non-prismatic configuration of the reservoir and changes in the water depth in the longitudinal direction of the reservoir. Taking these factors into account significantly clarifies the numerical values of the amplitude of the wave formed, as well as the values of the flow rate, speed and volume of water poured over the dam crest. In the General initial-boundary value problem, the coefficients of the main differential equation are variables that depend on the spatial coordinate. In the General formulation, this creates great difficulties in the analytical solution of the problem and has not been solved by anyone in the whole world to date. In this article was found and applied original and effective substitution, i.e. replacing a variable that in two special cases based on the coefficients from the spatial coordinates that led basic differential equation initial-boundary value problem to the equation with constant coefficients, and thus substantially easier way of solving the initial-boundary value problem. In the above-mentioned special cases, the initial-boundary value problem is solved by strict analytical methods of mathematical physics. For each case, a set of calculation formulas is obtained for calculating the amplitude of the waves formed, as well as for the flow rate and volume of water poured over the dam crest.

Number of views: 271

FUNCTIONING AND DYNAMICS OF LANDSCAPES IN THE DESIGN OF HIGHWAYS IN MOUNTAINOUS CONDITIONS

L. I. Kortiev, A. L. Kortiev, S. D. Vaneyev, R. P. Kulumbegov

Number of views: 312

INTEGRATED MONITORING OF SLOPE PROCESS IN INDIA AND RUSSIA

Ganapathy G. P., Zaalishvili V. B., Chandrasekaran S. S., Melkov D. A.

The common approach to landslide prediction is the integration of the observed landslide displacements, soil properties, and rainfall estimation into predictive models. In general, monitoring the evolution of an unstable slope may provide valuable information to gain a better understanding of the active prediction and early warning processes for potential geodisasters. With this background an initiation has taken between India and Russia to develop cost effective methodology to monitor landslides under the Indo Russian Bilateral Collaborative Projects by DST- RFBR. Based on the hazard assessment The Nilgiris District in Tamil Nadu and Wayanad and Idukki Districts in Kerela area identified for further detailed study on monitoring Vulnerable slopes. On the territory of North Ossetia three sites of different mass volume and differenent activity rates were selected. Landslides that have not moved for years (for example Luarskiy landslide) commonly reactivate if ground water levels change dramatically, particularly when water penetrates old ground cracks, or construction activity creates slope modification that reduces stability.

Number of views: 267

POTENTIAL FOR ELECTRIC CONSUMPTION MANAGEMENT IN THE CONDITIONS OF AN ISOLATED ENERGY SYSTEM IN A REMOTE POPULATION

Yu. L. Zhukovsky, A. Yu. Lavrik, A. V. Semenyuk, O. S. Semenyuk

Number of views: 255

PERSPECTIVES OF APPLYING WEBRTC FOR REMOTE-CONTROLLED MINING EQUIPMENT

A. A. Kravtsov, V. I. Anischenko, V. A. Atrushkevich, I. A. Pytalev

Currently a lot of mining companies, such as Caterpillar, Sandvik, Atlas Copco and Komatsu are developing solutions for machines remote control and mining process automation. The purpose of these technologies is to increase labor efficiency and safety. Solutions for remote control should establish secure connection and transfer data with low latency – this could be implemented with WebRTC technology. Several problems were revealed during open data analysis of Cisco, Sandvik, Moxa and Acksys remote control solutions – using of expensive IP-cameras, sophisticated network and security design. WebRTC could solve these and several other problems. WebRTC operation principles reviewed further: initial information exchange via signaling server, use of ICE for discovering shortest path between peers and establishing peer-topeer connection. This could simplify network design and allow to use more cheap USB cameras instead of IP-cameras. For security reasons WebRTC encrypts transmitted data with DTLS and SRTP algorithms. Encryption key fingerprints are exchanged over signaling server; after connection establishment, peers are exchanging keys itself over discovered route. But WebRTC specification does not define peer to signaling server communication, which may lead to breach in unsecure data channel, especially man-in-the-middle attack. To prevent this, software engineer should ensure that connection with signaling server is secure. Mining machine model was developed to test data transmission latency. In this model, Raspberry Pi single-board computer is responsible for wireless connection, video encoding and commands processing. Received commands are passed to Arduino controller, which operates electric engines controller. Three remote control scenarios were tested – model is near the operator and in direct line of sight; model is near operator, but not in direct line of sight; model and operator are far away from each other (over 1600 km), model controlled over Internet. Test results shows that transmission latency does not exceed 300 ms, which is suitable for real-time remote driving.

Number of views: 243

MONITORING OF THE DYNAMIC STATE OF AUTONOMOUS HEAVY PLATFORMS ON THE QUARRY ROUTES OF MINING ENTERPRISES

S. G. Kostyuk, I. V. Chicherin, B. A. Fedosenkov, D. M. Dubinkin

Purpose of work. The article presents the results of theoretical research and developments obtained at the Kuzbass state technical university on the implementation of current monitoring and bringing about signal processing procedures for the dynamic state of autonomous heavy platforms (AHP) on open pit mine routes. In order to obtain information about the generated current trajectories (CT) of unmanned mining dump trucks, in the software and hardware complexes of the computer-aided dispatching system (in the external control subsystem – ECSS  and the autonomous control subsystem – ACSS) installed on-board of an AHP, one-dimensional (scalar) continuous signals (hereinafter converted into discrete digital ones) with a time-dependent instantaneous frequency, the so-called chirp signals, are put in accordance with the current trajectories of the AHP. Research methods. This approach makes it possible to continuously monitor and manage the dynamics of current ATP trajectories with a high degree of efficiency. Note that for the purpose of information-rich and semantically transparent representation of information about the current state of the AHP CT, the chirp signals of the CT are converted into multidimensional Cohen’s class time-frequency wavelet distributions. The Wigner-Ville distribution (hereinafter referred to as the Wigner distribution) is selected as a working tool for performing computational procedures in the hardware / software module. This distribution is based on the Gabor basis wavelet functions and the wavelet matching pursuit algorithm. The choice of Gabor wavelets as the main ones is explained by their sinusoidal-like shape, since they are sinusoidal signals modulated by the Gauss window. On the other hand, the analyzed 1D-signals indicating the current position of the AHP on the route are also sinusoidal-like. This makes it possible to approximate current signals with high accuracy based on their comparison with the wavelet functions selected from the redundant wavelet dictionary. This approximation is adaptive, since it is performed on separate local fragments of the signal analyzed depending on approximating wavelets. This is the essence of the wavelet matching pursuit algorithm. The resulting wavelet series is then transformed into the Wigner time-frequency distribution, which is used to form a corresponding CT. Research results. As an example, reconstructions of time-frequency distributions (TFD) are given, corresponding to the deviation of a certain CT to the left (the trajectory signal decreases exponentially) and to the right (the CT-signal increases) from the nominal axial trajectory (NAT). The calculated scalar signal and its TFD for the AHP CT deviating to the left from NAT are also presented. In addition, on the basis of theoretical explanations the calculated linear-increasing TFD is demonstrated, corresponding to the CT-deviation to the right from NAT, and the time invariant stationary TFD characterizing the movement of AHP along the NAT line.  Сonclusion. Based on the results obtained, it is concluded that the most appropriate ways to monitor the current trajectories of AHP movement and procedures for processing the corresponding signals are the operations implemented in computer-aided subsystems of external and autonomous control and based on such concepts as the Cohen’s class wavelet distributions, Gabor redundant dictionary of wavelet functions, the wavelet matching pursuit algorithm, and the representation of technological chirp-signals, as well as frequency-stationary signals about the current AHP trajectories represented in the wavelet medium. In this connection, the authors concluded that the procedures realizing the current monitoring of AHP movement on open pit mine   routes and implementing the process of analyzing a relevant dynamic change in curre

Number of views: 223

INTERDISCIPLINARY ASPECTS OF SUSTAINABLE DEVELOPMENT OF MOUNTAIN TERRITORIES: THE ROLE OF SOCIO-CULTURAL FACTORS

A. N. Gunya, E. A. Khadzaragova, V. N. Khetagurov, Yu. I. Karaev

The purpose of this work is to analyze the role of culture in the sustainable development of mountain areas in different regions and with different approaches to reflecting this topic of research in scientific publications. The analysis is based on two thematic issues of the journals Sustainable Development of Mountain Territories (SDMT) and Mountain Research and Development (MRD), which focus on the role of culture in mountains. The joint thematic issue was based on the task to reflect the contribution of cultural factors to the sustainable development of mountain areas, as well as the expansion of scientific exchange between communities speaking different languages. Last but not least, it was important to reflect the difference in approaches and methods of “visualization” of scientific thought in the West and in Russia, integration and contextualization of knowledge, which is crucial for ensuring sustainable development in the global aspect. In total, 13 articles were analyzed (4 in the SDMT and 9 in the MRD). The parameters for analysis and comparison were: thematic focuses of articles, regions covered, a set of keywords, goal formulation, concepts. 9 articles cover the mountains of Asia (Caucasus – 3, Himalayas – 2, Tibet and its eastern mountain frame – 2, Mountains of Siberia – 2), two articles each are devoted to the Alps and Andes. Comparison of the analysis of articles on the role of culture in the mountains, presented in the Russian and Swiss journals, showed both similarities in assessments of the role of culture in sustainable development and differences in approaches and depth of analysis of empirical data. The articles recognize the fundamental importance of culture for sustainable development in mountainous regions and preventing the destruction of mountain communities with unique environmental management systems. The initiative to jointly produce articles on such an important topic as the role of culture in the mountains contributes to global efforts to generate knowledge, demonstrating how to integrate the cultural component into development practice and policy. This is in line with the goals and objectives of UNESCO, in particular with efforts to develop indicators for the cultural dimension of development.

Number of views: 251

LOCAL PERCEPTIONS OF TOURISM’S EFFECTS IN RUSSIA’S ALTAI REPUBLIC

Ruth Heuertz Remmers, Alexander C. Diener

In 2015, 1.8 million tourists visited Russia’s Altai Republic. This profoundly affected the residential population numbering 210,000. However, tourism’s effects do not holistically offer benefit to local culture, the local economy or the environment. To understand perceived impacts of tourism within the Altai Republic, surveys and interviews were conducted among local stakeholders during the summer of 2015. Results suggest that residents and tourists largely agree on tourism’s improving the standard of living, and that tourism helps preserve local culture. That said, residents demonstrated greater propensity than tourists to pick up litter, while women tended to notice environmental damage more than men. The study provides valuable insights into the understudied Altai Republic and contributes to global understanding of interactions between tourism stakeholders.

Number of views: 456

ORGANIZATION OF SUSTAINABLE AGRICULTURAL LAND USE BASED ON LANDSCAPE ANALYSIS

V. L. Tatarintsev, L. M Tatarintsev, A.V. Matsyura, A. A. Bondarovich

The aim of the work was the landscape analysis of agricultural geographical landscapes in the Altai Territory and elaboration of measures aimed at the rational use of agricultural lands. Environmental and landscape (landscape) approach became the main method of scientific research used in the analysis of modern agricultural landscapes. The cartographic method, using GIS-technologies, made it possible to digitize the obtained materials. Synthesized maps of agro-ecological, natural and other zoning of territories are based on topographic, soil, geobotanical and other thematic maps made during land surveying during the field survey. Retrospective analysis, induction and deduction methods, analysis and synthesis, as well as the abstract-logic method were also used in the work. Our main result was the analysis of land use territory for agricultural enterprise in municipal district of Altai Krai. Exploration of lands indicates a pronounced plant-growing specialization of JSC “Pobeda” with a developed animal breeding direction. Limiting factors affecting the rational use of land are natural and climatic conditions, terrain, unsystematic anthropogenic activity and, as a result, the development of erosion processes. The degree of eroded and deflated arable land is more than 50%, hay and pasture lands are also very unstable. Landscapes have been typified, based on which eleven types of land have been identified and their geomorphological description has been carried out. The first five types of land can be used for agricultural production with limitations compensated by crop technology and erosion control measures, the sixth and seventh types require grassing and, in some cases, conservation, the eighth and ninth types can be partially used for pasture and area valorization; the remaining two are not suitable for agricultural use but should be potentially used for planting and forest management. As a result of the presented transformation of agricultural lands, the structure of cultivated areas has changed. The area of arable land decreased by 877 ha, and of pastures by 365 ha, while the area under hayfields, fallow lands, and forest lands increased by 295, 191, and 875 ha respectively. Low-productive lands were withdrawn from agriculture. We suggested that the sustainability of agricultural land use was mainly caused by the reduction of anthropogenic load and increase in ecological equilibrium of the territory.

Number of views: 425

FORECASTING OF DAMAGES FROM NATURAL HAZARDS FOR THE “NORTHERN CAUCASUS RESORTS” TOURIST CLUSTER

V. L. Baburin, S. V. Badina

The article proposes a methodological approach to potential damage from natural hazards forecasting in case of large-scale investment projects realization in ski tourism planning, as well as to assessing changes in the vulnerability of the territory in which these projects will be implemented. The method was verified on the data of the “Northern Caucasus Resorts” tourist cluster. The study purpose is the creation and verification of a methodology for socio-economic damage predicting in limit values and vulnerability changing in the regions of the “North Caucasus Resorts” tourist cluster objects localization for the long term. Research methods – statistical (a structural approach based on the identification of common structural patterns of several sets). The lack of statistical information on significant parameters for forecasting determine necessitates of using the various logically non-contradictory revaluations based on the identified structural similarities for the calculation of their values within the planning horizon. The study results and main conclusions – in case of the “North Caucasus Resorts” tourist cluster creation the number of people potentially located in avalanche and mudflow danger areas will significantly increase in all of its facilities localization municipalities, which indicate an increase in the individual risk of death level for this territory. The present population in the ski season in some of the most remote and underdeveloped areas can increase up to 30 times. The increment in the value of the fixed assets for the municipalities under consideration will be from two to 90 times, potential damages in limit values will reach tens of billions rubles.

Number of views: 516
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ISSN 1998-4502 (Print)                                                            ISSN 2499-975Х (Online)