Determination of natural modes of railway overpasses

Abdullayev, Seidulla; Bakyt, Gabit; Aikumbekov, Muslim N.; Bondar, I. S.; Auyesbayev, Y.T.

doi:10.22201/icat.24486736e.2021.19.1.1487

Cited by 11 publications

(10 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Major research on the development of the mining industry was conducted in peacetime and did not take into account current threats that may arise suddenly. Research was mainly aimed at substantiating and solving issues related to optimizing rock mining [40] and transportation technologies [41], [42], crushing processes [43], determination of parameters for transport operations [44]- [46], research on the productivity of excavator-vehicle complexes [47], peculiarities of the natural environment anthropogenic transformation during quarrying [48], monitoring of surface subsidence [49]- [54], reclamation measures to restore disturbed areas [51]- [53] and efficient transportation methods to maximize the efficiency and consistency of mining processes [55]- [57]. Therefore, research related to water inflows into the mined-out space of the quarry, which makes it possible to predict the operating performance of a pumping unit and plan its shutdown schedules with the possibility of maximum loading of crushingscreening plants, is of particular relevance.…”

Section: Figure 3 Graph Of Changes In Crushed Stone Production In Ukr...mentioning

confidence: 99%

Mining of non-metallic mineral deposits in the context of Ukraine’s reconstruction in the war and post-war periods

Saik,

Cherniaiev,

Anisimov

et al. 2023

Min. miner. depos.

View full text Add to dashboard Cite

Purpose. The research purpose is to study the conditions for mining deposits of metamorphic and igneous origin to produce crushed stone products in conditions of limited electricity supply. Methods. The research uses an integrated approach, including data analysis on quarry field spatial dimensions and the overburden rock thickness, which provides the basis for identifying deposits into basic groups. For the identified groups of deposits, taking into account the hydrological characteristics of non-metallic deposits and their parameters, patterns have been determined that characterize the change in the normative atmospheric precipitation inflow, based on the quarry field area and the change in the specific costs for water drainage depending on the studied quarry field type. Based on data on technical characteristics of mobile and semi-stationary units and aggregates, the parameters of physical-mechanical properties of granites and diorites, technical-technological solutions for the formation of complexes for processing raw materials for the production of crushed stone products are proposed. Findings. Problems arising during mining operations under conditions of limited electricity supply, which is caused by mass attacks on Ukraine’s energy infrastructure, have been revealed. A systematization of deposits of igneous and metamorphic origin for mining of rock building materials, which are the basis for the production of crushed stone products, has been developed. The rates of water inflow into the mined-out space depending on the quarry field spatial parameters and the depth of mining operations have been studied. Technological schemes of the apparatuses of a complex for processing raw materials for production of crushed stone products and the apparatuses of a complex for processing siftings are proposed. Originality. Dependences of possible water inflow into the mined-out space of the quarry and change in energy consumption for water drainage have been determined, taking into account the accepted classification criteria, namely the quarry field spatial dimensions, the overburden rock thickness and the quarry depth. Practical implications. The obtained data on the possible water inflow into the mined-out space of the quarry and change in energy consumption for water drainage make it possible to assess the efficiency of pumping units. The proposed technical-technological solutions on formation of complexes for processing raw materials to produce crushed stone products have been developed in accordance with the fundamental provisions of the Law of Ukraine “On approval of the National program for the development of the mineral resource base of Ukraine for the period up to 2030”.

show abstract

Section: Figure 3 Graph Of Changes In Crushed Stone Production In Ukr...mentioning

confidence: 99%

Mining of non-metallic mineral deposits in the context of Ukraine’s reconstruction in the war and post-war periods

Saik,

Cherniaiev,

Anisimov

et al. 2023

Min. miner. depos.

View full text Add to dashboard Cite

show abstract

“…Creating domestic, as well as borrowing and applying certain technological solutions from the practice of developed countries, the Ukrainian economy already now should not bear with such negative consequences as environmental pollution [20], a high level of industrial waste [21], the presence of disproportions in the degree and level of mechanization and automation of the main and auxiliary production processes [22][23][24][25], presence of jobs with uncomfortable and dangerous working conditions [26][27][28]. In this regard, scientific-technical solutions for the creation of new progressive technological processes should be of a socially oriented nature, thereby ensuring waste-free or lowwaste technological processes [29][30][31], their integrated mechanization and automation with minimal transport cost [32,33], the elimination of uncomfortable and dangerous jobs, and environmental protection [34,35].…”

Section: Introductionmentioning

confidence: 99%

Substantiating the operating parameters for an underground gas generator as a basic segment of the mining energy-chemical complex

Saik

Falshtynskyi

Lozynskyi

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

This paper presents the main aspects of changing the coal mining technology based on the introduction of underground coal gasification technology for the mining-geological conditions of the occurrence of State Enterprise “Lvivvuhillia” coal seams on the example of “Chervonohradska” mine. When conducting analytical studies using the “Material-heat balance of underground coal gasification” software, predictive quantitative-qualitative indicators of the injected blast mixture and gasification products have been determined depending on the structure and elemental composition of the coal seam, host rocks, water saturation of the seam, and water inflow into the gasification channel. The heat energy loss of an underground gas generator during the gasification of thin and ultra-thin coal seams has been revealed. The heat and energy capacity of the underground gas generator has been determined depending on the type of supply of the injected blast mixture to the combustion face “mirror” and the performance indicators of the gas generator segment within the mining energy-chemical complex taking into account the quantitative-qualitative indicators of generator gas and liquid chemical raw material of the condensate.

show abstract

“…Their competencies include minimizing the time to eliminate various failures and hazards that are associated with the technological process of extraction and transportation of rock to the place of unloading. The urgency of this process is pointed up by the fact that the efficiency of the entire system of mining technology depends on the reliability of the driver [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Increasing the safety of the transport process by minimizing the professional risk of a dump truck driver

Tsopa¹,

Cheberiachko²,

Yavorska³

et al. 2022

Min. miner. depos.

View full text Add to dashboard Cite

Purpose.The aim of the study is to develop recommendations for reducing the probability of accidents during the transportation of rock by dump trucks based on the analysis of the consequences of changes in the psycho-physiological states of the driver. Methods. The study used the method of “Hazard and operability studies” and the method of “Failure Mode and Effects Analysis” including the organizational, logical and mathematical, and statistical procedures aimed at obtaining the expert assessment of hazards from professional experts based on Grabs’ criteria that affect to change the psychophysiological state of the driver while driving a dump truck, their analysis and generalization of the results in order to prepare reasonable decisions. Findings. It is established that the psychophysiological state of the driver as a manifestation of fear, anxiety, doubt, uncertainty when performing discrete work, which is associated with frequent changes in the beginning of movement and stops of the vehicle (accumulation of a large number of dump trucks, complex route plan, etc.) leads to an increase in the risk of an emergency. It is determined that the highest level of emergency occurs due to emotional manifestations, that are associated with the relationship between employees, the presence of leadership support, psychological assistance, mobbing, conflict resolution and more. Recommendations have been developed to increase the level of transportation safety through the formation of an appropriate organizational culture at the enterprise, which ultimately shapes human social behaviour. Originality. The scientific novelty lies in the establishment of the values of occupational risk of an accident while driving a dump truck by the driver, which depends not only on the probability of a dangerous event and the severity of its consequences, but also on changes in the psychophysiological state of the driver, which results from the organizational culture of occupational safety at the mining enterprise. Practical implications. Consists in the development of a procedure for qualitative assessment of the risk of an accident from the psychophysiological state of the driver during the trucking of rock in the conditions of the mining enterprise. Recommendations for improving the safety of transportation through the formation of an appropriate organizational culture of the transport process are developed. An approach of taking into account the socio-psychological climate in the organization to assess the occurrence of the incident is proposed.

show abstract

Determination of natural modes of railway overpasses

Cited by 11 publications

References 15 publications

Mining of non-metallic mineral deposits in the context of Ukraine’s reconstruction in the war and post-war periods

Mining of non-metallic mineral deposits in the context of Ukraine’s reconstruction in the war and post-war periods

Substantiating the operating parameters for an underground gas generator as a basic segment of the mining energy-chemical complex

Increasing the safety of the transport process by minimizing the professional risk of a dump truck driver

Contact Info

Product

Resources

About