KOMAG Institute of Mining Technology
MISSION
Innovative solutions for economy.
VISION
Research and development centre of organizational and proprietary structure adapted to the market activity in the European Research Area and of the organizational culture creating a friendly climate for generating new ideas and realizing innovative activities, i.e. transforming new ideas into new products.
Read moreDesign
Designing of machines and equipment
Tests
Laboratory of Applied Tests
Certification
Assessment of products' conformity
Projects
Projects realized by the KOMAG Institute from European Funds
 |
A scientific-and-technical quarterly, published by the KOMAG Institute of Mining Technology for over 30 years, is a magazine which presents scientific, research-and-development and implementation projects in the domain of mining mechanization, especially as regards the following:
|
Articles written by scientists from institutes and universities, employees from research-and-development centres as well as mine technical personnel and manufacturers of machines are presented in the quarterly.
Contact
Phone:
Managing Editor 48 32 2374 177
E-mail:
This email address is being protected from spambots. You need JavaScript enabled to view it., This email address is being protected from spambots. You need JavaScript enabled to view it.
Tejszerska D., Turewicz K.
Identification of dynamic load of the hydraulic leg
Szyguła M., Mazurek K., Madejczyk W.
Powered roof supports manufactured by the GLINIK company as the equipment planned for longwall faces in the Polish mining industry till 2010
Ziara A., Ślusarz R., Kret A.
Factors which influence proper operation of hydraulic system of the powered roof support
Potempa J., Wojtacha M.
Modified version of ZSHP Control Assembly for pneumatic brakes
Barańska H., Kowal L., Materzok A.
Analysis of the drum crusher operation in a mine producing coal fines for the power industry
Pyc A., Matusiak P.
Operational safety management of the powered roof support
Jaszczuk M., Markowicz J., Szweda S., Meder A.
Using virtual technology in a reconstruction of accidents in the mining industry
Winkler T., Michalak D., Bojara S., Jaszczyk Ł.
Skoć A.
Interactive training materials for mining machines assembling /disassembling processes
Jaszczyk Ł., Michalak D
Concept for supplying the longwall system with 6 kV voltage on example of Knurów Colliery
Meder A., Budzyński Z., Pieczora E., Matuszewski J., Gwiżdż W., Krakowczyk B., Wundersee F.
Crown tools – bits of new generation for cutting a compact rock
Kalukiewicz A., Gospodarczyk P., Kotwica K., Łapa D.
Improvement of functionality of mine transportation diesel machines
Drwięga A., Kulesza K., Sobolewski A.
Modernization of face development work by using ŁBT-1200EH/LS-A side discharge loader
Kalita M., Pieczora E., Prostański D., Wyrobek E.
Designing, testing and operational tests of air-water spraying installation for dust and methane control installed in KSW-460 longwall shearer
Prostański D., Rojek P.
Structures protecting operators of face mining
Kalita M., Prostański D., Tokarczyk J., Wyrobek E.
Identification of critical dynamic states of conical gear in operationally oriented designing
Skoć A.
S u m m a r y
Counteracting to disadvantageous results of dynamic interactions between components of a toothed gearbox is possible by application of relevant methods and measures aimed at mitigation of tooth-to-tooth dynamic forces that may origin in a toothed gearbox. For that purpose possession of adequate knowledge on reasons for excitation of gear components is indispensable. In particular, it is necessary to know what makes the toothed gears vibrate and what are the effects of such oscillations. In other words, it is necessary to examine mutual interconnections between reasons and effects that define dynamic constitution of a gearbox, which is crucial for loads to its components. The gearbox designer must make efforts to avoid operation of a gearbox under threat of excessive excitation of toothed gears and making them oscillate as these are conditions where parameters for dynamic loads may significantly exceed the values that had been adopted in the algorithm for calculation of the gearbox strength. Scope of this paper is solely limited to the analysis of the impact of the circumferential velocity of toothed gears on the toot-to-tooth dynamic load, which is closely connected with the impact of excitation frequency. The objective of the analysis is to find critical values of that velocity and define the bandwidth where local maxima of dynamic.
Interactive training materials for mining machines assembling /disassembling processes
Jaszczyk Ł., Michalak D
S u m m a r y
Possibilities of using interactive simulations as training materials for mining machines assembling/disassembling processes were presented. Interactive simulations can be a supplement of training materials for new coming employees and they also can be used for preparation of technical-and-operational documentation.
Concept for supplying the longwall system with 6 kV voltage on example of Knurów Colliery
Meder A., Budzyński Z., Pieczora E., Matuszewski J., Gwiżdż W., Krakowczyk B., Wundersee F.
S u m m a r y
Seeking for coal mining costs reduction is connected with a reduction of number of longwall faces with increasing of unit production at the same time. That can be achieved by increasing of machines output. Concept for supplying the integrated group of longwall machines with 6 kV voltages in geological and mining conditions of Knurów Colliery was presented in the paper.
Crown tools – bits of new generation for cutting a compact rock
Kalukiewicz A., Gospodarczyk P., Kotwica K., Łapa D.
S u m m a r y
Mechanical cutting in the underground mining industry is at present the most popular mining method for coal winning and for driving the opening roadways and development roadways. The method consists in direct impact or static pressing of cutting tool on a solid rock. Energy delivered in such a way is used to overcome internal rock cohesive forces. Rock cutting is most popular winning method, which is realized using cutting tools. Tangential-and-rotational bits are used most frequently to cut compact rocks.
Improvement of functionality of mine transportation diesel machines
Drwięga A., Kulesza K., Sobolewski A.
S u m m a r y
State-of-the-art mine transportation diesel machines were described in the paper. Series of novelty solutions, which enable to increase transportation efficiency and safety, were used in realization of the project. Collaboration of RFM RYFAMA and FMG PIOMA resulted in development of three solutions, which were presented in the paper.
Modernization of face development work by using ŁBT-1200EH/LS-A side discharge loader
Kalita M., Pieczora E., Prostański D., Wyrobek E.
S u m m a r y
Main technical parameters and operational experience of ŁBT-1200EH/LS-A side discharge loader, with a telescopic boom, which is used in driving of roadways with explosives, were presented in the paper. Also a design of loader and the method of its modernization as regards meeting requirements of European Directives were given. Trends of further development of loader design were also included.
Designing, testing and operational tests of air-water spraying installation for dust and methane control installed in KSW-460 longwall shearer
Prostański D., Rojek P.
S u m m a r y
Designing process, testing and practical application of a solution for the air-water spraying system installed in the KSW-460 longwall shearer, developed at the KOMAG Centre, was presented in the paper. Results of stand tests carried out in the Barbara Experimental Colliery and results from operational tests carried out in Pniówek Colliery were presented. General structure and operational principles of new spraying system were presented.
Structures protecting operators of face mining
Kalita M., Prostański D., Tokarczyk J., Wyrobek E.
S u m m a r y
Incorporation of new solutions of mining machines and equipment is directly associated with securing a proper safety level to the machines’ operators. Protection of operators against roof falls is one of the methods for increasing operators work safety. According to the standards and legal acts, the self-propelled machines, which operate underground, have to be equipped with protective structures. Legal acts and standards determining the requirements, which are put to the protective structures for operators, which work on machines in underground mine roadways as well as KOMAG’s experience in designing of operator’s protective structures are presented in the paper.
Pytlik A.
Mathematical model in fire-fighting network in underground coal mine
Mikoś M., Ptak J., Wojciechowski J. Wojciechowski M.
Numerical methods in designing sedimentation equipment
Kołodziejczyk K., Zacharz T.
Stand for laboratory tests of loading process using worm cutting drum
Hamala K., Wydro T.
Proposal of implementation of unequivocal marks for tangential-and-rotational bits of cutting worm drums
Krauze K.
RWU-50 hand rotary-percussive drill supplied with 2% oil-water emulsion
Pac A., Stenka G., Warachim W.
New generation of mining machines and devices manufactured by the ‘RYFAMA’ Factory JSC in Rybnik
Suchoń J., Szlązak J.
Underground storage of dangerous wastes in Poland as a challenge to environmental engineering
Kłeczek Z., Zeljaś D.
The Effect of Human Factor on the Accident Rate at Coal Mines
Bryukhanov A., Mnukhin A.
Improving activities in quality management system
Zając R.
Methodology and mathematical model of stand tests of roof bolts dynamic resistance
Pytlik A.
S u m m a r y
Methodology and mathematical model of stand tests of roof bolts dynamic resistance were presented in the paper. Results of the previous tests of roof bolts, loaded dynamically, carried out according to methodology described in the paper, proved that impact loads cause extreme stresses in roof bolts, which often led to their failure when loads were lower than destructive loads determined during statistical tests.
Mathematical model in fire-fighting network in underground coal mine
Mikoś M., Ptak J., Wojciechowski J. Wojciechowski M.
S u m m a r y
Mathematical model of water network in the under- ground coal mine, which can be used to calculate parameters of the network depending not only on the water distribution but also on changes in configuration of installation was presented in the paper. By use of model the water stream values and pressure drops in every section of pipeline, and a pressure in interesting network points can be calculated.
Numerical methods in designing sedimentation equipment
Kołodziejczyk K., Zacharz T.
S u m m a r y
In the paper the authors presented the possibilities of use of the state-of-the-art modeling methods in the field of environment protection. Systems of computer aid in designing processes using the CFD (Computational Fluid Dynamics), based on the finite elements method were presented. Velocity distribution both in the flood system and in the whole settler were simulated using the CFDesign program. Modernization of the flood system shape in order to obtain an even velocity distribution was conducted on the basis of the obtained results. Due to the fact that the basis of settlers operation is the use of sedimentation process, i.e. gravitational sinking of the grains in the continuous medium, and that the process can be considered as one of the most complicated both from the mathematical and simulation point of view, the second package of the FLUENT software, which has much wider possibilities of the one-, two-, and multiphase simulations was presented. It confirms a variety of different domains in which it is used. In the paper the authors wanted to point out that the use of the software helps to eliminate expensive experimental research work at the stage of designing and modernization of machines. It is important to remember that a verification in the laboratory stand is necessary at the end of designing process due to the safety of machine operation.
Stand for laboratory tests of loading process using worm cutting drum
Hamala K., Wydro T.
S u m m a r y
In the paper a discussion referring to run-of-mine load process by worm cutting drum was presented. Mechanism of load process with the use of worm cutting drum was described, and relationships meeting of which have a great impact on proper and effective loading process were given. Values, which influence the process were not determined, and parameters, which amounts and method of selection were specified on the basis of empirical studies, were deter- mined. In order to verify their impact on loading process, efficiency guidelines for laboratory tests on loading process were formulated, and a conception of design of test stand was presented. Realization of tests will enable to specify guidelines for a selection and design of worm cutting drums in the future, taking into account a proper and effective loading process.
Proposal of implementation of unequivocal marks for tangential-and-rotational bits of cutting worm drums
Krauze K.
S u m m a r y
Use of different types of roadheader bits, especially tangential-and-rotational bits of cutting worm units, should provide minimal resistance of mining process, and the best possible durability of cutting tools, cutting drums and mining machine. The most important problem in this case is a such position of cutting bits which enables suitable operational cutting angles. Analytical method for determination of operational cutting angles, developed for analytical purposes, requires a knowledge of design parameters of bit, holder and cutting drum. Unfortunately, there is a lack of such data in catalogues of companies which manufacture cutting tools and holders what makes calculations difficult. That is why implementation of permanent marking of selected design parameters, in order to make a selection of cutting bit or holder easier, is suggested.
RWU-50 hand rotary-percussive drill supplied with 2% oil-water emulsion
Pac A., Stenka G., Warachim W.
S u m m a r y
The paper describes the RWU-50 hand rotary-percussive drill supplied with 2% oil-water emulsion. This drill is used to drill blast holes and bolting holes in the rocks which hardness is higher than 30 MPa. Effectiveness of hard rocks drilling process is secured by the MH-1 hydraulic hammer used in a drill design, which has a frequency of impacts higher than 6000 min‑1, and unit impact force equal to 32 kN when supply pressure is equal to 20 MPa.
New generation of mining machines and devices manufactured by the ‘RYFAMA’ Factory JSC in Rybnik
Suchoń J., Szlązak J.
S u m m a r y
Now in Poland there is an urgent need of neutralization of more than 6 000 parts of uranium fuel (HLW) burned in reactors and 5 000 m3 of middle- (ILW) and low- (LLW) active wastes. Within the next ten years, more than 300 000 m3 of radioactive wastes and about 106 Mg of other dangerous wastes (per year) can appear, depending on development of the nuclear power engineering. Taking into account experiences of the West Europe countries and USA in handling with dangerous wastes, their processing and neutralization by the underground storage is the only safe and legally allowed method. In the light of these facts consideration of the possibility of building an underground waste storage in Poland is the actual challenge for the environmental engineering. The paper proved that a salt deposit in the Lubinsko-Glogowski Copper District (LGOM) satisfies all the criteria necessary to develop an underground dump for dangerous wastes there.
Underground storage of dangerous wastes in Poland as a challenge to environmental engineering
Kłeczek Z., Zeljaś D.
S u m m a r y
Now in Poland there is an urgent need of neutralization of more than 6 000 parts of uranium fuel (HLW) burned in reactors and 5 000 m3 of middle- (ILW) and low- (LLW) active wastes. Within the next ten years, more than 300 000 m3 of radioactive wastes and about 106 Mg of other dangerous wastes (per year) can appear, depending on development of the nuclear power engineering. Taking into account experiences of the West Europe countries and USA in handling with dangerous wastes, their processing and neutralization by the underground storage is the only safe and legally allowed method. In the light of these facts consideration of the possibility of building an underground waste storage in Poland is the actual challenge for the environmental engineering. The paper proved that a salt deposit in the Lubinsko-Glogowski Copper District (LGOM) satisfies all the criteria necessary to develop an underground dump for dangerous wastes there.
The Effect of Human Factor on the Accident Rate at Coal Mines
Bryukhanov A., Mnukhin A.
S u m m a r y
The paper presents numerical evaluation of human factor affecting the accident rate at coal mines. The calculations habe been carried out on the basis of a “man-machine-environment” system approach within specified confidence intervals. Mathematical techniques of conditional probability and high level statistics have been used to this end.
Improving activities in quality management system
Zając R.
S u m m a r y
When the Quality Management System is implemented to the organization, the system’s constant control is significant for its effectiveness. Without a constant and proper control of the system it has no chance for further development, and what is more – old practices often come back. Quality system control includes not only monitoring of realization of correction and prevention activities, but also a development of pro-quality awareness of employees and undertaking improvement activities in the organization. Constant improvement, system thinking, and strategic management determine a work style, not the activities performed only to solve a problem for a short time.
Virtual prototyping of powered-roof supports in case of changeable loads
Tokarczyk J.
State-of-the-art method for selection of start-up devices for mining drives of belt conveyors
Kulinowski P.
Safety of the work in face ends
Musiał B., Lisiecki K.
Present condition and development prospective for the ‘Bogdanka’ Colliery
Stachowicz S.
Present problems of coal exploatation in the ‘Bogdanka’ Colliery resulting from specificity of mining-and-geological and technical-and-organizational conditions
Krasowski Z.
State-of-the-art monitoring system for technological process for the ‘Bogdanka’ Colliery
Mironowicz W.
Selected methods and measures for increase of safety and cost reduction of mining shaft hoists operation
Hansel J.
Wheel-and-rail transport on inclined road-ways with use of emergency braking system
Krauze K.
Virtual prototyping of powered-roof supports in case of changeable loads
Tokarczyk J.
S u m m a r y
The paper presents an application of MSC.Fatigue software for the virtual prototyping of powered-roof supports in case of changeable loads, which are exerted on powered-roof supports in the test stands. According to the requirements of PN-EN 1804-1 Standard it is necessary to conduct fatigue stand tests for every set of new powered-roof support. Use of MSC.Fatigue software significantly broadens the area of virtual prototyping, which is more frequently used when new mining machines and devices are designed.
State-of-the-art method for selection of start-up devices for mining drives of belt conveyors
Kulinowski P.
S u m m a r y
State-of-the art method for selection of start-up de- vices for mining drives of belt conveyors is described. The paper focuses especially on a presentation of indicators for start-up assessment associated with load of the belt and the drive system.
Safety of the work in face ends
Musiał B., Lisiecki K.
S u m m a r y
Work safety in face ends is described in the paper. Due to an implementation of face end powered roof supports we can expect a significant improvement of work safety, consisting in elimination of the hazards caused by falling rocks and coal blocks as well as in a reduction of work effort.
Present condition and development prospective for the ‘Bogdanka’ Colliery
Stachowicz S.
S u m m a r y
The paper presents history and development prospective for the ‘Bogdanka’ Colliery as well as present condition, organizational changes and restructuring of the ‘Kopalnie Lubelskiego Zagłębia Węgla w Budowie’ Company (i.e. the ‘Bogdanka’ Colliery) within 30 years of the company existence.
Present problems of coal exploatation in the ‘Bogdanka’ Colliery resulting from specificity of mining-and-geological and technical-and-organizational conditions
Krasowski Z.
S u m m a r y
The paper presents problems of coal exploatation in the ‘Bogdanka’ Colliery resulting from specificity of mining-and-geological and technical-and-organizational conditions. Concentration of longwall mining is the main way to reduce the unit costs of coal mining in the ‘Bogdanka’ Colliery. Successive increase of face advances and of daily output from one face, as well as increase of efficiency take place since early 1990s.
State-of-the-art monitoring system for technological process for the ‘Bogdanka’ Colliery
Mironowicz W.
S u m m a r y
The need of competitiveness of Polish coal makes the coal mines to introduce state-of-the-art solutions in the field of mining, control and management within technical restructuring. Mining in the coal mines with several highly productive mining areas needs the full monitoring of mining machinery system and transportation lines to extend, among others, the effective operation time of the machine and time between the breakdowns. Also some activities which will minimize the necessity of stopping the mining operations, e.g. because of safety reasons, are necessary. The ‘Bogdanka’ Colliery, which has one of the best results in comparison with other Polish collieries, was the first coal mine which started to implement the presented state-of-the-art solutions. Described in the paper solutions have completely innovatory character and were developed within the project No 9 T12A 094 97 C/3716 financed by the Scientific Research Committee and the ‘Bogdanka’ Colliery.
Selected methods and measures for increase of safety and cost reduction of mining shaft hoists operation
Hansel J.
S u m m a r y
The paper presents overall characteristics of mining industry in Poland from the safety of SMTP vertical transportation machinery systems point of view. Selected results of AGH cognitive and practical scientific-and-research studies on safety of mining shaft hoists, which are one of three SMTP sub-systems, are described. It has been found that the rightness of thesis about existing possibilities of vertical transportation cost reduction with simultaneous increase of reliability and safety of mining shaft hoists is the most important achievement. Thesis rightness has been proved on the basis of HWR movable stabilizing blocks, modar® lining and systems for the operation of vessels with combined PHH shock-absorber.
Wheel-and-rail transport on inclined road-ways with use of emergency braking system
Krauze K.
S u m m a r y
Phenomenon of uncontrolled movement (self-sliding) of wheel-and-rail transportation vessels is a big problem during the transport of payloads on the inclined roadways. The possibility of counteracting this phenomenon, when disadvantages of applied present solutions are eliminated, was the reason to develop a new way of wheel-and-rail transport with use of braking car, which was used for transportation in LW ‘Bogdanka’. Braking car developed to for requirements in the ‘Kazimierz-Juliusz’ Colliery was the first prototype of this solution. Experience gained so far as well as economical calculations of the undertaking confirm the rightness of assumptions and an achievement of planned effects. The possibility of implementation of braking system operating in LW ‘Bogdanka’ and in other Polish mines was confirmed by the State Mining Authority (GM-107/04).
Gospodarczyk P.
Determination, by the analytical method, an ability of powered roof support to take over an increased dynamic load
Stoiński K., Kostyk T.
Mine string bolts of a high dynamic resistance
Pytlik A.
New inserts for force measurements in ropes in the mining shaft hoists
Małecki J., Meder A., Wróbel T.
Device for removal of excessive lubricant from hoisting and balancing ropes in the mine hoisting machines
Wolny S., Hryciuk J., Dzik S.
Legal aspects of use of the machines and devices in the mining plants
Meder A., Kaczmarczyk J.
Standardization activity at the KOMAG Mining Mechanization Centre within the last 60 years
Zając R.
International Trade Fair for Mining, Power Generation and Metallurgy – Katowice 2005
Malec M., Stańczak L.
The proposal of algorithmization of design process of the mining face machines
Gospodarczyk P.
S u m m a r y
The algorithm for designing the mining face machines, which main methodical assumption is treating the machine as if it was a part of a complex face mechanization system were presented. Criteria for evaluation of the quality of machine, such as its efficiency, reliability, durability, etc., should be extended by economical criteria. They enable to verify the solution usefulness for the user in specified operational conditions, from the realized economical target point of view. In a design process it is important to take into account the relations between designed machine and other parts of the face mechanization system. Strict requirements of the users and degree of development of technical solutions as well as the costs cause that it is not enough to treat them as if they were only the visibility studies for the machine which is designed. Complete integration of a design process of the machine and machinery system is indispensable.
Determination, by the analytical method, an ability of powered roof support to take over an increased dynamic load
Stoiński K., Kostyk T.
S u m m a r y
The analytical method for determination of degree and efficiency of ability of hydraulic components of powered roof supports to take over an increased dynamic load was presented on the basis of the regulations and standards determining usefulness of powered roof supports susceptibility for dynamic loads which were designed for operation in seams exposed to bumping hazard. The method uses the knowledge of dynamic phenomena which occur in distressed rock mass as well as mathematical model of powered roof support for determination of possibilities and conditions for effective transfer of dynamic loads.
Mine string bolts of a high dynamic resistance
Pytlik A.
S u m m a r y
Mine string bolts of a high dynamic resistance were presented in the paper. Special attention was paid to a new string bolt structure of the IR-4W type. This bolt is designed to be used in the areas of increased rock mass pressure and in the conditions of rock bursts and bumps. Set of the components of the IR-4W string bolt was approved to be used in the underground workings of mines by the State Mining Authority in Katowice.
New inserts for force measurements in ropes in the mining shaft hoists
Małecki J., Meder A., Wróbel T.
S u m m a r y
The paper presents results of tests and assessment of the WPS-Ec inserts, which were carried out in a Division of Statutory Tests in the KOMAG Mining Mechanization Centre. The inserts are used for force measurements in ropes in the mining shaft hoists and due to this they are installed in the suspensions of conveyances and shaft hoist ropes. The use of these inserts means the use of additional safety measure during the ropes’ operation in the shaft hoists, which will have wide range of possibilities to be used. This measure is a practical tool, not commonly used so far, which can be used by the personnel responsible for the safety of mining shaft hoists’ operations.
Device for removal of excessive lubricant from hoisting and balancing ropes in the mine hoisting machines
Wolny S., Hryciuk J., Dzik S.
S u m m a r y
Device for removal of excessive lubricant from the ropes of mine hoisting machines is presented in the paper. Such a device consisting of a head and of a base enables an installation of a head during operation of removal the excessive lubricant from hoisting ropes, as well as of a set of guide rolls, which ensures the same process conditions along the whole rope length.
Legal aspects of use of the machines and devices in the mining plants
Meder A., Kaczmarczyk J.
S u m m a r y
Legal aspects of use of the machines and devices in the mining plants from the 17th of May 2005, which were not changed at the moment of preparation of the paper, were presented.
Standardization activity at the KOMAG Mining Mechanization Centre within the last 60 years
Zając R.
S u m m a r y
60 years of the KOMAG Mining Mechanization Centre activity is a good reason to take a retrospective look at one of those fields of KOMAG activity which is not indirectly connected with research or design work but refers to the standardization and creation of the uniform technical requirements for the mining machines and devices. Due to the fact that last year the 80-year activity of the Polish Standardization Committee was celebrated, it is worth to consider how the standardization work was carried out by the KOMAG Centre.
International Trade Fair for Mining, Power Generation and Metallurgy – Katowice 2005
Malec M., Stańczak L.
S u m m a r y
The paper is a presentation of the Katowice 2005 Fair. The KOMAG Mining Mechanization Centre also had its stand at the Fair and presented its offer referring, among others, to mechanization systems, systems for processing the coal and other raw minerals as well as the offer referring to designs of mining machines and equipment as well as other designs.
Badanie bezpieczeństwa wyrobów
Klaster Maszyn Górniczych
© 2024 KOMAG Institute of Mining Technology