Optimization of position of the cyclical-and-continuous method complexes when cleaning-up the deep iron ore quarries

Purpose. An algorithm development for calculating the optimum depth for cyclical-and-continuous method schemes introduction when cleaning-up the deep iron ore quarries. Methods. When developing an algorithm for calculating the optimum depth for cyclical-and-continuous method schemes introduction under the conditions of the Kacharsky mine, abstraction and analytical techniques were used to distinguish the parameters that most significantly influence on the depth value of the cyclical-and-continuous method schemes introduction. The developed algorithm has been applied when constructing a mathematical model based on mining-engineering parameters for cleaning-up the Kacharsky Iron Ore Mine. Findings. An algorithm is presented for calculating the optimum depth to put into operation the railway transport and a conveyor hoister in the cyclical-and-continuous method schemes, taking into account the mining-engineering and economic parameters for cleaning-up the deep quarries in surface mining. It has been substantiated that the transition from a combined automobile-railway to a combined automobile-conveyor-railway mode of transport is economically viable and will expand the limits of the effective use of surface mining of iron ore deposits. It is recommended to restrict the depth of commissioning the railway transport to 149 m, and the conveyor hoister – to 344 m into the cyclical-and-continuous method schemes using automobile-conveyor and automobile-railway modes of transport. Originality. Based on the constructed mathematical model, the dependences have been obtained of the prime costs for transporting the total volume of rocks mined on the depth of the cyclical-and-continuous method schemes introduction under the conditions of the Kacharsky Iron Ore Mine. Practical implications. For the conditions of cleaning-up the Kacharsky Iron Ore Mine, the optimum parameters have been set for the mining-transport scheme of the cyclical-and-continuous method, which ensure the minimum prime costs of the rock mass transportation.Мета. Розробка алгоритму розрахунку оптимальної глибини введення схем циклічно-потокової технології при доопрацюванні глибоких залізорудних кар’єрів. Методика. При побудові алгоритму розрахунку оптимальної глибини введення схем циклічно-потокової технології для умов Качарського кар’єру були застосовані метод абстрагування та аналітичний метод для виділення параметрів, що найбільш суттєво впливають на величину глибини введення схем циклічно-потокової технології. Розроблений алгоритм був застосований при формуванні математичної моделі на основі гірничо-технічних параметрів доопрацювання Качарського залізорудного кар’єру. Результати. Розроблено алгоритм розрахунку оптимальної глибини введення залізничного транспорту і конвеєрного підйомника у схемах циклічно-потокової технології з урахуванням гірничотехнічних та економічних параметрів доопрацювання глибоких кар’єрів відкритим способом. Доведено, що перехід з комбінованого автомобільно-залізничного на комбінований автомобільно-конвеєрно-залізничний вид транспорту економічно доцільний і дозволить розширити межі ефективного застосування відкритого способу розробки залізорудних родовищ. Рекомендовано глибину введення залізничного транспорту обмежити до 149 м, а конвеєрного підйомника – 344 м у схемах циклічно-потокової технології з автомобільно-конвеєрним й автомобільно-залізничним видами транспорту. Наукова новизна. На підставі побудованої математичної моделі були отримані залежності собівартості транспортування сумарного обсягу виїмки гірських порід від глибини введення схем циклічно-потокової технології в умовах Качарського залізорудного кар’єру. Практична значимість. Для умов доопрацювання Качарського кар’єру встановлені оптимальні параметри гірничо-транспортної схеми циклічно-потокової технології, що забезпечують мінімальну собівартість транспортування гірничої маси.Цель. Разработка алгоритма расчета оптимальной глубины ввода схем циклично-поточной технологии при доработке глубоких железорудных карьеров. Методика. При построении алгоритма расчета оптимальной глубины ввода схем циклично-поточной технологии для условий Качарского карьера был применены метод абстрагирования и аналитический для выделения параметров, наиболее существенно влияющих на величину глубины ввода схем циклично-поточной технологии. Разработанный алгоритм был применен при формировании математической модели на основе горнотехнических параметров доработки Качарского железорудного карьера. Результаты. Представлен алгоритм расчета оптимальной глубины ввода железнодорожного транспорта и конвейерного подъемника в схемах циклично-поточной технологии с учетом горнотехнических и экономических параметров доработки глубоких карьеров открытым способом. Доказано, что переход с комбинированного автомобильно-железнодорожного на комбинированный автомобильно-конвейерно-железнодорожный вид транспорта экономически целесообразен и позволит расширить границы эффективного применения открытого способа разработки железорудных месторождений. Рекомендовано глубину ввода железнодорожного транс- порта ограничить до 149 м, а конвейерного подъемника – 344 м в схемах циклично-поточной технологии с автомобильно-конвейерным и автомобильно-железнодорожным видами транспорта. Научная новизна. На основании построенной математической модели были получены зависимости себестоимости транспортирования суммарного объема выемки горных пород от глубины ввода схем цикличнопоточной технологии в условиях Качарского железорудного карьера. Практическая значимость. Для условий доработки Качарского карьера установлены оптимальные пара- метры горнотранспортной схемы циклично-поточной технологии, обеспечивающие минимальную себестоимость транспортирования горной массы.The studies have been made in the context of cooperation with Sokolov-Sarbais mining-processing unity JSC, Satbayev University (Kazakhstan) and Dnipro University of Technology (Ukraine). The results of work on the topic 2018/АР05133548 “Assembly, optimal placement and high-performance use of cyclical-and-continuous method when cleaning-up the deep iron ore quarries” (2018 – 2020) have been published

Research into engineering and operation parameters of mineral fertiliser application machine with new fertiliser spreading tools

The output capacity of the machine for top spreading the soil with solid mineral fertilisers can be raised by means of increasing its working width. The authors have carried out field trials and field experiment investigations with the MVU-8 granulated mineral fertilizer spreading machine equipped with two prototype units of the centrifugal fertiliser spreading tool, in which the axis can be tilted at different angles to the vertical line. In accordance with the results of the completed investigations, it has been established that setting the axial tilt angle of the centrifugal operating device in the fertiliser spreading tool within the range of 25–30° provides for achieving a productivity of the combined tractor-implement unit for applying mineral fertilisers at a level of 35–40 ha per working shift hour. The best performance in the fertiliser application with regard to both the working width and the fertiliser placing distribution uniformity is ensured at angles of inclination of the disc in the fertiliser spreading tool with respect to the horizontal plane within the range of 25–30°. At these angles, the uneven distribution of the fertiliser over the working width is equal to 19.2%, the uneven distribution of the fertiliser along the unit’s line of travel is equal to 8.9%, while the deviation in the dosage of the applied fertilisers from the set value is equal to 7.5%

Experimental research into uniformity in spreading mineral fertilizers with fertilizer spreader disc with tilted axis

Received: February 2nd, 2021 ; Accepted: March 27th, 2021 ; Published: April 7th, 2021 ; Correspondence: [email protected] the efficiency in the work process of mineral fertilizer dressing is a topical problem in today’s agricultural industry. The authors have developed a design of the fertilizer spreading tool with a tilted axis and carried out field experiment investigations on it. It has been established by the results of the investigations that the non-uniformity in the spreading of mineral fertilizers along the line of their departure from the fertilizer spreading tool with a tilted axis is most strongly affected by the disc rotation frequency. The obtained results provide for selecting the optimum parameters and modes of operation for the tool under consideration in the situation, when it is installed in fertilizer placing machines. Also, it has been established that increasing the spreading disc rotation frequency in such a tool from 600 to 800 rpm results in the growth of the effective range of mineral fertilizer spreading along the placing line at a level of 10.5 m. Increasing the disc’s angle of inclination to the horizontal plane to 20º results in the rise of the effective fertilizer spreading range at a level of the 48th tray (24 m) inclusive as well as the increase of the distance between the tool and the tray that contains the maximum share of the spread fertilizers (5.1%) to 24 trays (12 m). At a constant rotation frequency of the disc in the tilted-axis fertilizer spreading tool, in all its kinematic modes of operation, an increase in the angle of its disc’s inclination to the horizontal plane results in the rise of the indices representing the distribution of the mineral fertilizers over the trays along the line of their placing. The width of the mineral fertilizer spreading can be controlled by adjusting the rotation frequency of the disc in the tilted-axis fertilizer spreading tool, when it is set at an angle to the horizontal plane, similar to how it is done in state-of-the-art fertilizer placing machines with horizontally positioned discs in their centrifugal spreading tools. The rotation frequency of the disc in the tilted-axis fertilizer spreading tool has the most significant effect on the coefficient of variation incidental to the distribution of the mineral fertilizers along the line of their placing

Research into engineering and operation parameters of mineral fertiliser application machine with new fertiliser spreading tools

Received: February 13th, 2021 ; Accepted: April 15th, 2021 ; Published: April 19th, 2021 ; Correspondence: [email protected] output capacity of the machine for top spreading the soil with solid mineral fertilisers can be raised by means of increasing its working width. The authors have carried out field trials and field experiment investigations with the MVU-8 granulated mineral fertilizer spreading machine equipped with two prototype units of the centrifugal fertiliser spreading tool, in which the axis can be tilted at different angles to the vertical line. In accordance with the results of the completed investigations, it has been established that setting the axial tilt angle of the centrifugal operating device in the fertiliser spreading tool within the range of 25–30° provides for achieving a productivity of the combined tractor-implement unit for applying mineral fertilisers at a level of 35–40 ha per working shift hour. The best performance in the fertiliser application with regard to both the working width and the fertiliser placing distribution uniformity is ensured at angles of inclination of the disc in the fertiliser spreading tool with respect to the horizontal plane within the range of 25–30°. At these angles, the uneven distribution of the fertiliser over the working width is equal to 19.2%, the uneven distribution of the fertiliser along the unit’s line of travel is equal to 8.9%, while the deviation in the dosage of the applied fertilisers from the set value is equal to 7.5%

Experimental research into uniformity in spreading mineral fertilizers with fertilizer spreader disc with tilted axis

Improving the efficiency in the work process of mineral fertilizer dressing is a topical problem in today’s agricultural industry. The authors have developed a design of the fertilizer spreading tool with a tilted axis and carried out field experiment investigations on it. It has been established by the results of the investigations that the non-uniformity in the spreading of mineral fertilizers along the line of their departure from the fertilizer spreading tool with a tilted axis is most strongly affected by the disc rotation frequency. The obtained results provide for selecting the optimum parameters and modes of operation for the tool under consideration in the situation, when it is installed in fertilizer placing machines. Also, it has been established that increasing the spreading disc rotation frequency in such a tool from 600 to 800 rpm results in the growth of the effective range of mineral fertilizer spreading along the placing line at a level of 10.5 m. Increasing the disc’s angle of inclination to the horizontal plane to 20º results in the rise of the effective fertilizer spreading range at a level of the 48th tray (24 m) inclusive as well as the increase of the distance between the tool and the tray that contains the maximum share of the spread fertilizers (5.1%) to 24 trays (12 m). At a constant rotation frequency of the disc in the tilted-axis fertilizer spreading tool, in all its kinematic modes of operation, an increase in the angle of its disc’s inclination to the horizontal plane results in the rise of the indices representing the distribution of the mineral fertilizers over the trays along the line of their placing. The width of the mineral fertilizer spreading can be controlled by adjusting the rotation frequency of the disc in the tilted-axis fertilizer spreading tool, when it is set at an angle to the horizontal plane, similar to how it is done in state-of-the-art fertilizer placing machines with horizontally positioned discs in their centrifugal spreading tools. The rotation frequency of the disc in the tilted-axis fertilizer spreading tool has the most significant effect on the coefficient of variation incidental to the distribution of the mineral fertilizers along the line of their placing

БЕЗБЮДЖЕТНИЙ МЕНЕДЖМЕНТ ВИТРАТ ТА ДІЯЛЬНОСТІ ЯК ІННОВАЦІЙНИЙ ЕЛЕМЕНТ ЕКОНОМІЧНОГО УПРАВЛІННЯ В МІЖНАРОДНОМУ БІЗНЕСІ

The experience of the operation of successful foreign corporations in market conditions shows that in order to ensure the viability of the enterprise over a long period of time, it is necessary to introduce new methods of the system of economic management of enterprises. Traditional methods of economic management, in particular, budgeting as a corporate management tool, are considered as one of the obstacles to the effective functioning of the business entity. Budgeting as one of the main methods of cost management was relevant in the industrial age, but it is beginning to show its inability in the information society. Budgetless management (Beyond Budgeting) is a modern alternative approach to business performance management, in which the traditional annual budget ceases to be the main control tool in the company. Rejecting traditional  budgeting processes, the company aims to create a highly decentralized organizational system and an adaptive set of management processes. The disadvantages of the concept include the possibility of its non-compliance with the expected results when using Activity-based costing, Balanced Scorecard, etc.methods. According to experts, these technologies are not able to implement new ideas, because the budget and the operational management  system that supports it remain dominant. .Beyond Budgeting enables multi-level decision making where managers make informed decisions based on information that is constantly changing. get, rather than blindly focusing ongoals that were set months ago. Companies unwilling to change their management style may find that the system does not suit them. In it, theultimate goal is not a number, but the strategy of the company's actions for the selected period. Financial forecasts in it slide and are often revised depending on the circumstances.Досвід функціонування успішних зарубіжних корпорацій в умовах ринку свідчить, що для забезпечення життєздатності підприємства протягом тривалого проміжку часу необхідно впроваджувати нові методи системи економічного управління підприємствами. Безбюджетне управління (Beyond Budgeting) – це сучасний альтернативний підхід до управління ефективністю бізнесу, в межах якого традиційний річний бюджет перестає бути основним інструментом здійснення контролю в компанії.В ньому кінцева мета не цифра, а стратегія дій компанії на вибраний період. Фінансові прогнози в ній ковзають та часто переглядаються залежно від  обставин

Theoretical study of the conditions of the maximum allowable slipping of wheel tractors

Received: October 1st, 2022 ; Accepted: March 15th, 2023 ; Published: March 17th, 2023 ; Correspondence: [email protected] process of tractor wheels slipping is accompanied by two forms of ground deformation: displacement and shearing. From the point of view of preserving the structure of the soil environment, wheel slip should be limited to displacement only. The limit of soil strength [σo] at this deformation can be a standardizing parameter. In this article an analytical dependence is developed, which allows using the parameter [σo] to establish the maximum permissible level of slipping of wheeled tractors. Of the soil parameters, the specified dependence includes the coefficient of sliding friction between the particles of soil medium and the coefficient of wheel rolling resistance on a particular agrotechnical background. Theoretical studies have established that the greater the value of this coefficient, the smaller should be the maximum permissible value of tractor slipping with a more economical effect on the soil environment. Compared to a tractor with a nominal drawbar pull of 14 kN, the use of a heavier tractor with a drawbar pull of 30 kN is possible with higher values of maximum permissible towing. This result is due to the magnitude of the vertical load on the wheel of the heavier tractor, which gives it a greater friction force between the tire wheel and the ground and allows the same contacting traction force to be realized at a lower level of slipping. The results of mathematical modeling using the developed analytical relationships indicate that with increasing the value of the angle of placement (slope) of the tractor wheel to the longitudinal axis of symmetry, the maximum permissible level of its slipping should be less. This will help to reduce the value of deformation (longitudinal shift) of the soil by the tractor during its working movement. When using the ground shear strength limit [σo] у as a limiting parameter for increasing the pitch and height of the tractor tire, as well as the width of the tractor wheel tyre, the maximum permissible level of its towing is more than 15%, which is an undesirable fact

Chronic pain in children with oncopathology: ways of solving the problem

Проведено обстеження 60 дітей (3 групи по 20 дітей у кожній). У 1-й групі проводилося знеболення морфіном, у 2-й – морфіном у комбінації з габапентином, у 3-й – парацетамолом із габапентином. Досліджувалися показники серцево-судинної системи, шлунково-кишкового тракту. Використовувалися опитувальник «Самопочуття. Активність. Настрій» для визначення психоемоційних порушень, візуально-аналогова шкала та шкала облич – для визначення інтенсивності болю. Найкращою переносимість знеболення була в дітей, які отримували парацетамол із габапентином, найгіршою – в дітей, які отримували тільки опіати. Діти, в яких комбінували опіати з габапентином, мали кращі показники самопочуття та значно менше ускладнень порівняно з дітьми, котрі отримували тільки опіати

Системний підхід до вибору нових засобів транспорту для роботи на глибоких кар'єрах

Надано класифікацію транспортних засобів для роботи в умовах відкритої розробки родовищ за ступенем поширеності, досвідом використання та впровадженням у виробництво. Виділено три групи транспортних засобів: поширені, малопоширені та перспективні. Запропоновані різні підходи до обґрунтування доцільності застосування гірничотранспортних внутрішньокар’єрних схем транспорту, в ланки яких входить обладнання з різних запропонованих класифікаційних груп. Розроблена методика оцінки переваг нових транспортних засобів, в основі якої лежать методи системного підходу, аналогій, техніко-економічного аналізу та логічних інженерних рішень. Виділено три умови переходу на новий вид транспорту: економічну, технологічну та екологічну.Представлена классификация транспортных средств для работы в условиях открытой разработки месторождений по степени распространенности, опыту использования и внедрению в производство. Выделены три группы транспортных средств: распространенные, малораспространенные и перспективные. Предложены различные подходы к обоснованию целесообразности применения горнотранспортных внутрикарьерных систем транспорта, в звенья которых входит оборудование из разных предложенных классификационных групп. Разработана методика оценки преимуществ новых транспортных средств, в основе которой лежат методы системного подхода, аналогий, технико-экономического анализа и логических инженерных решений. Выделены три условия перехода на новый вид транспорта: экономическое, технологическое и экологическое.The classification of transport means for using in conditions of surface mining of mineral deposits is presented according to the degree of prevalence, experience of use and implantation into industry. There are three groups of transport means: common, minor and prospective. Various approaches to the justification of the mining transport systems, taking into account the units of which include equipment from the various classification groups are proposed. A new methodology of assessing the benefits of new transport means, based on the methods of the system approach, analogies, technical-economic analysis and logical engineering solutions, is developed. There are three conditions for transition to a new transport mean: economic, technological and ecological

The Kyiv Meridian Axial Circle Catalogue of stars in fields with extragalactic radio sources

A catalogue of astrometric (positions, proper motions) and photometric (B, V, R, r', J) data of stars in fields with ICRF objects has been compiled at the Observatory of the National Academy of Sciences of Ukraine and the Kyiv University Observatory. All fields are located in the declination zone from 0 to +30 degrees; the nominal field size is 46' (right ascension) x 24' (declination). The observational basis of this work is 1100 CCD scans down to V=17 mag which were obtained with the Kyiv meridian axial circle in 2001-2003. The catalogue is presented in two versions. The version KMAC1-T contains 159 fields (104 796 stars) and was obtained with reduction to the Tycho2 catalogue. For another 33 fields, due to a low sky density of Tycho2 stars, the reduction was found to be unreliable. Transformation to the ICRF system in the second version of the catalogue (KMAC1-CU) was performed using the UCAC2 and CMC13 catalogues as a reference; it contains 115 032 stars in 192 fields and is of slightly better accuracy. The external accuracy of one catalogue position is about 50-90 mas for V < 15 mag stars. The average error of photometry is better than 0.1 mag for stars down to 16 mag.Comment: 13 pages, 19 figure