JOURNAL OF MINING AND GEOLOGICAL SCIENCES, Vol. 62, Number 2
ISSN 2682-9525 (print)
ISSN 2683-0027 (online)
СЪДЪРЖАНИЕ
CONTENTS

Aleksandrova, E., S. Asenovski, D. Georgiev, D. Kaykov, I. Koprev. Methods for determining an optimal technological solution for underwater mining	5
Begnovska, M. Opportunities for the application of different mine surveying mapping technologies in determining volumes in underground mine workings	9
Eftimov, Z., D. Anastasov. New underground infrastructure in “Varba – Batantzi” mine	13
Eftimov, Z., D. Anastasov. Innovation in the mining methods in the “Varba – Batantzi” underground mine	17
Eremeeva, A. M., G. I. Korshunov, N. K. Kondrasheva. Reduction of emissions impact on the environment and health of coal mine workers	21
Georgiev, D., S. Asenovski, D. Kaykov, L. Dimitrov, I. Koprev. Evaluation of the possibilities for sustainable exploitation of a deposit for kaolin and silica sands	25
Gospodinova, V. Research on creating digital photogrammetric model by using different number of control and check points	29
Gospodinova, V., R. Yordanova, A. Kandilarov. Vegetation indices as a means of monitoring of objects in the region of  open pit mines	34
Khayrutdinov, A. M. Processing and recycling of resources in outer space: international legal aspects	41
Kolev, N., P. Savov, M. Vatzkitcheva, K. Velichkova, D. Dimitrov, B. Vladkova, S. Toncheva. The impact of outdoor mining activities on atmospheric air quality in nearby settlements	45
Kulikova, E. The requirements for concrete lining of a sewage collector tunnels	50
Kulikova, E., A. Ivannikov. Environmental sustainability in the development of urban underground space	54
Makedonska, D., M. Michaylov. Need for fixed fire fighting systems in road tunnels	60
Mamray, V., V. Korobiichuk, V. Shlapak. Experience of dimension stone extraction by quarry cutting machine in Pokostovsky deposit, Ukraine	66
Mollova, Z. New insights into the impact of blast wave on the human body	70
Mollova, Z. Blast load analysis and effect on building structures	75
Pulev, S. Dynamic ascent of a mining dumper on a road with longitudinal slope	81
Rodionov, A. O. Increasing the economic efficiency of mining complex structural gold deposits	85
Stefanov, D., Ts. Balov, I. Koprev. Developing a measurements plan to study blasting stress waves induced by the explosive breakage of rock in the Chelopech Underground mine	89
Stoycheva, N., P. Shishkov. Innovative formulations for a new generation of low-speed explosive compositions, designed for blasting in tender conditions and for extraction of rock-cladding materials	94
Tamaskovics, N., D. Tondera, P. Pavlov, L. Totev. Computational pothole mine subsidence analysis for multilayer sites	99
Trifonova-Genova, V. On the distorted contour of an elliptical opening passing a rock mass with a horizontal plane of isotropy	103
Tzonkov, A. Mine surveying activities in management of geomechanical processes	107
Ananyev, P., A. Plotnikova. Analysis of selective destruction criteria of iron ores using provisional magnetic pulse treatment	111
Angelov, A., A. Stefanova, K. Nikolova. Regression analysis of factors affecting microbial fuel cell efficiency	115
Angelov, A., E. Kraichev, M. Lecheva, S. Plochev. Volumetric coefficient of oxygen mass transfer analysis in column photobioreactor	119
Grigorova, I., M. Ranchev, I. Nishkov. Crushing circuit optimization in lead-zinc processing plant	124
Ignatovich, A., D. Luckiy, R. Khismatullin. Extraction of rhenium from ammoniacal leaching solutions of copper smelting slag and model solutions	129
Ivanova, M. Mechanical load during shredding of tough-plastic materials with a two-shaft shredder	132
Ivannikov, A., K. S. Cheynesh, A. Khayrutdinov, Y. Tyulyaeva. Modern approach to the technology of the backfilling	135
Ivanov, R., A. Stefanova, A. Angelov. Treatment of water contamined by petroleum products through constructed wetlands with integrated plant sediment microbial fuel cells	139
Ivanova, Ts., I. Grigorova, M. Ranchev. Possibilities for PNEUFLOT flotation machine application in copper-porphyry ore processing plant	143
Ivanova, Ts., M. Ranchev, I. Grigorova, I. Nishkov. Pre-contact pneumatic flotation of copper porphyry ore from Assarel deposit	148
Manastirli, M., M. Nicolova. Investigation of the possibilities to use recycled construction waste in road construction	153
Nicolova, M., I. Spasova, P. Georgiev, S. Groudev. Bioleaching of copper ores by means of different chemolithotrophic bacteria and archaea	159
Panayotova, M., L. Djerahov, G. Gicheva. Investigation of the possibility for extracting ions, possessing a corrosive action on construction materials, by washing solid inclusions in a clayey overburden	162
Spasova, I., M. Nicolova, P. Georgiev, S. Groudev. Microbial extraction of precious metals from a gravity-flotation concentrate	167
Toshev, S., A. Loukanov, S. Nakabayashi. Colorimetric sensor from citrate capped silver nanoparticles for trace detection of arsenic (III) in groundwater	170
Toshev, S., A. Loukanov, S. Nakabayashi. Design of self-propelling Janus nanoimpeller as a nanomachine for targeting and destruction of pathogenic microorganisms	174
Tsvetkov, P., S. Bratkova. Semi-passive treatment of mine waste water in anaerobic conditions	179
Zubkova, О. S., A. I. Alexeev. Complex processing of saponite waste of a diamond-mining enterprise	183

JOURNAL OF MINING AND GEOLOGICAL SCIENCES, Vol. 62, Number 3
ISSN 2682-9525 (print)
ISSN 2683-0027 (online)
СЪДЪРЖАНИЕ
CONTENTS

Atmadzhova, D. Analysis of strength and deformation of parabolic leaf springs for transport equipment	5
Dimitrov, D. Methodology for determination of the parameters of hydraulic stoke mechanisms	11
Dimitrov, D. General and specific requirements for the development of new hammer drilling machines	15
Ivanov, A. Vibrations of shaft caused by inertial excitations	19
Minin, I., S. Savov. VWear of the cylinder linings of drum sag mill	25
Minin, I., P. Nedyalkov. Reliability and possibility of fail – safe operation of a drum mill type SAG-8,5×5,3	30
Mitev, D. Simulation modelling of the discharge plate of a jaw crusher	34
Nedyalkov, P. Reliability function fit regarding one jaw crusher liners	39
Khudiakova, I., S. Ivanov. Selection of parameters of technological equipment for the extraction complex of raw peat materials from undrained deposits	44
Sheiretov, H. Comparison of the methodologies for the determination of the belt tensions and the required drive power of the belt conveyors	48
Sheiretov, H. Determination of the loads acting on the slewing support of a truck mounted crane and selection of a slewing support	54
Stoyanov, A. Determination of a 3d structure’s external reactions under the action of applied loads with complex configuration	60
Stoyanov, A. Graphical determination of 2d frame reactions under the action of concentrated fixed loads and slowly moving evenly distributed load	64
Batueva, D. Development of an algorithm forecasting the generation of electric energy by a wind diesel complex	69
Bondarenko, I., I. Temkin. Evaluation of technological solutions, taking into account the risks of deviation of integral design indicators	73
Dzhustrov, K. Influence of the ball load on the specific power consumption of ball mills	77
Eliseeva, N. N., A. V. Zubov. The application of search methods for solving optimisation problems in geodesy	82
Gorbounov, Y., H. Chen. Technological aspects and applications of large power switched reluctance motors in mining	86
Hristova, T. Analytical study of the energy consumption of drum mills according to their size	92
Ilieva-Obretenova, M., E. Blagoeva, B. Karkov. Algorithm for lot-sensor design and maintenance service	98
Istalianov, R., N. Lakov. Energy control on the linings wear of semi-autogenous mills	104
Lavrik, A., Y. Zhukovsky, A. Buldysko. Features of the determination of the optimal composition of a wind-solar power plant with diesel generators during multi-criterial search in conditions of the Russian arctic	107
Petrov, P. K., G. Ts. Velev, K. M. Ivanov. A method for dimensioning the lightning protection of photovoltaic modules, placed on the roofs of buildings	113
Savov, N., P. Gencheva. Evaluation of the opportunities for electricity and heat generation from generated biogas	117
Tenev, R. Laboratory tests of an insulation monitoring device	123
Vasilkov, O. Improving the reliability of power supply of industrial enterprises through the application of hybrid energy storage devices	128
Velinova, S. Lighting system for studying plant growth	132

JOURNAL OF MINING AND GEOLOGICAL SCIENCES, Vol. 62, Number 4
ISSN 2682-9525 (print)
ISSN 2683-0027 (online)
СЪДЪРЖАНИЕ
CONTENTS

Anastasova, Y. Technologies for ensuring data quality and security in industrial information systems	5
Mitev, V. Management of the quantity and quality of the reserves and resources of ore deposits	9
Ivanova, D. Digitalisation of the industry as a key to risk reduction at a mining enterprise	15
Popovic, G., D. Mihajlovic. Prioritisation of criteria important for ore transport system selection	19
Preshelkova, A. Price formation of energy services in the sphere of natural gas in Bulgaria	23
Kovacheva-Ninova, V., V. Velev, V. Vassileva, K. Vutova. Trends in the development of the tungsten production	28
Mitev, V. Analysis of the demand, supply, and prices of crude oil	37
Petrova, V. Research and analysis of the state of socially responsible policies of mining companies through the eyes of local communities	43
Trifonova, B., B. Galabova. Increasing the efficiency of human resource management in mining enterprises	49
Dimov, E., N. Stratiev. Transition to the euro and the expected impact on the Bulgarian economy	55
Atanasov, A., R. Marinova. Non-financial reporting in the mining industry – regulations and application	58
Ilieva-Stoycheva, K., G. Siderova, P. Yusein. The production function of a mining enterprise as an analytical tool for the production optimisation	64
Ivanov M. Socio-economic and regional differences in the labour market in Bulgaria and the European Union	67
Ivanov, M. Problematic aspects of the processes of decentralisation and deconcentration in local self-government in Bulgaria	72
Hristova, V., K. Ilieva-Stoycheva, M. Petkov. An economic and mathematical model for determining of optimal mining with pre-defined quality indicators in a mining enterprise	77
Naydenov, K. Tourism in green economy – some key issues	80
Yanev, N., L. Meshekov. Service oriented application for rendering reports on the training workload at the University of Mining and Geology “St. Ivan Rilski”	84
Trifonova, M. Expanding the functional abilities of mechanics ADD-IN for MS EXCEL with examples in the field of statistics	88
Simeonova, D., V. Christov. Designing of an information advisory system for assessment of measures against water pollution from mining activities	92
Yanev, N. Contemporary approaches in storage and data processing	96
Toncheva, S. Analysis of approaches to customisation of Autodesk-products	100
Mihaylov, D. Using simulation modelling in teaching the game theory elements	104
Toncheva-Pencheva, S., Y. Anastasova. Personalisation of distance and e-learning for learning content	108
Trifonova, M., R. Nesheva, M. Kiryakov. Application for tracking the workload of lecturers and students at universities	112
Izvorska, D., G. Velev, M. Avdeeva. Good practices in language training at the Technical university of Gabrovo	117
Stoyanova, K. Technology of building testing questions and tasks in the vocational training education	121
Atanasov, V., K. Kalev. Some aspects in the design and development of learning applications for engineering specialties	126
Vukadinova, Ts. Similarities and differences in teaching English for specific purposes to engineering students at the University of Mining and Geology “St. Ivan Rilski”, Sofia, and at theTechnical University Bergakademie, Freiberg	130
Izvorska, D. Computer mathematics systems in higher mathematics training of students from Technical Universities	133
Izvorska, D. Formation of professional competence in Technical University students during their higher mathematics studies	138
Purvanova, M., M. Hristova, V. Panichkova, Ts. Vukadinova, M. Papazova, E. Balacheva, E. Davcheva. Introducing academic and institutional terminology and analysis of students’ skills to recognize and translate specific terms in their work with scientific foreign language texts at the University of Mining and Geology “St. Ivan Rilski”	143
Tzolova, V., V. Dimitrov. On the problem of the aim and tasks of physical education in universities	149
Naydenov, K., M. Vasileva. Educational projects – an instrument for raising the potential of human resources	153