Applying computational fluid dynamics in research on ventilation safety during underground hard coal mining: A systematic literature review

Brodny, Jarosław

doi:10.1016/j.psep.2021.05.029

Cited by 38 publications

(11 citation statements)

References 138 publications

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“…In many cases, such research is practically impossible to carry out, and the course of many unfavorable phenomena can be described on the basis of their effects only roughly. For this reason, model studies are very important, as they enable the analysis of many phenomena based on various types of models that are able to reproduce real conditions with increasing accuracy (Brodny et al 2021;Tutak, 2021).…”

Section: Proposed Solutions and Further Research Directionsmentioning

confidence: 99%

The role, importance and impact of the methane hazard on the safety and efficiency of mining production

Palka

Brodny

Tutak

et al. 2022

Production Engineering Archives

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Underground mining production is an extremely important process for the economy and carried out in very difficult and complex environmental conditions. The disturbance of the balance of this environment makes it also a very dangerous process. Due to the importance of coal, mainly as an energy raw material, the process of its exploitation is carried out all over the world. The specificity of its production is mainly determined by mining and geological conditions, which determine the method of operation and the selection of machines and devices for this process. One of the most dangerous natural hazards associated with this process are ventilation hazards, including methane hazard. The reason for this threat is methane, an odorless and colorless gas, which becomes a flammable and explosive gas under certain criteria. These features make this gas a huge threat to mining operations. Its huge amounts, contained in coal seams, are released into the mine atmosphere during the exploitation process, causing a very high threat to work safety. Events related to the occurrence of methane are most often the cause of mining disasters, in which people die and the technical and mining infrastructure is destroyed. The reason for the growing methane hazard is the increasingly difficult mining conditions, and mainly the increasing depth of mining, and thus also the increase in methane-bearing capacity of the seams. Taking into account the huge impact of methane hazard on the mining process, the article discusses its impact on the safety and efficiency of this process. The results of the literature review with regard to this risk are presented and the accident statistics are presented. On the basis of actual data, an analysis of interruptions in the exploitation process related to exceeding the permissible methane concentrations was carried out in one of the mines. The problem of limiting the production process due to these exceedances is an important factor reducing the efficiency of this process. The obtained results clearly indicate that the losses resulting from these breaks deteriorate the profitability of the entire process and affect the economic efficiency of the industry. In order to effectively counteract the dangerous phenomena related to the methane hazard and to improve the efficiency of the mining production process, solutions were proposed to improve this state and the directions for further research were proposed.

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Section: Proposed Solutions and Further Research Directionsmentioning

confidence: 99%

The role, importance and impact of the methane hazard on the safety and efficiency of mining production

Palka

Brodny

Tutak

et al. 2022

Production Engineering Archives

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“…Hence, in the initial phase of this study, searching databases were selected rather than focusing on particular journals since the investigated research topic cannot be limited to peer-reviewed construction management journals. Therefore, two widely used academic databases, Scopus and Web of Science (WoS), were used to conduct systematic literature review since they are among the most popular (Brodny and Tutak, 2021) and largest online academic search engines worldwide (Leiringer and Zhang, 2021). In this context, various search terms were conditioned iteratively with a particular emphasis on delay, construction industry and use of technology.…”

Section: Search Domainmentioning

confidence: 99%

Exploring the adoption of technology against delays in construction projects

Gürgün

Koç

KÜNKCÜ

2022

ECAM

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PurposeCompleting construction projects within the planned schedule has widely been considered as one of the major project success factors. This study investigates the use of technologies to address delays in construction projects and aims to address three research questions (1) to identify the adopted technologies and proposed solutions in the literature, (2) to explore the reasons why the delays cannot be prevented despite disruptive technologies and (3) to determine the major strategies to prevent delays in construction projects.Design/methodology/approachIn total, 208 research articles that used innovative technologies, methods, or tools to avoid delays in construction projects were investigated by conducting a comprehensive literature review. An elaborative content analysis was performed to cover the implemented technologies and their transformation, highlighted research fields in relation to selected technologies, focused delay causes and corresponding delay mitigation strategies and emphasized project types with specific delay causes. According to the analysis results, a typological framework with appropriate technological means was proposed.FindingsThe findings revealed that several tools such as planning, imaging, geo-spatial data collection, machine learning and optimization have widely been adopted to address specific delay causes. It was also observed that strategies to address various delay causes throughout the life cycle of construction projects have been overlooked in the literature. The findings of the present research underpin the trends and technological advances to address significant delay causes.Originality/valueDespite the technological advancements in the digitalization era of Industry 4.0, many construction projects still suffer from poor schedule performance. However, the reason of this is questionable and has not been investigated thoroughly.

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“…Lijun and others − proposed a formula for calculating the discharge of gun smoke in underground engineering, discussed the shortcomings of the existing ventilation airflow calculation method for tunnel blasting and digging, and verified it with the field measurement data; Cui and others − studied the transportation and distribution law of blasting smoke in tunnels and mines under natural ventilation. In coal mine ventilation, Juganda and others , provided a theoretical basis of CFD and, using numerical simulation, analyzed and summarized that fluid dynamics can be used in simulation to solve the hazards of coal mine gas explosion, fire, dust explosion, high heat, and humidity, as well as to identify poor-ventilation areas in which methane air tends to accumulate, areas where methane air tends to accumulate, and to design a reasonable ventilation method to solve the hazards to the greatest extent.…”

Section: Introductionmentioning

confidence: 99%

CO Diffusion Study and Spatial and Temporal Variation Modeling during the Construction Period of the Plateau Railroad Tunnel

Liu,

Zhao,

Wang

et al. 2023

ACS Omega

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In order to investigate the diffusion law of CO gas in the vicinity of the tunnel boring face of the plateau long tunnel, to improve the efficiency of tunnel smoke exhaust, and to derive the spatial-temporal variation model of CO concentration for predicting the concentration of CO at different times and in different cross sections under specific environments, a CO diffusion model of a tunnel in Yunnan was established by using Ansys Fluent Fluid Simulation Software, and the CO transport characteristics under different conditions were simulated by taking the ventilation time, wind speed, and location of the air ducts as the influencing factors. The results show that the wind flows from the mouth of the wind pipe after the wind speed decreases, the diffusion area increases and arrives at the face of the direction of the rebound in the jet stream of new wind, and the return wind under the joint action of the vortex produced obviously, to reach the wind pipe mouth after the tunnel wind flow field, basically tends to stabilize. When the wind pipe mouth was arranged in the arch waist, 20 m away from the boring face, the inlet wind speed was 9 m/s and the ventilation time was 30 min; the CO concentration in the tunnel was reduced to below the maximum allowable concentration value. Moreover, the concentration of CO in the tunnel at the moment of 15 min of ventilation has a nonlinear positive correlation with the change of distance L from the boring face, while at the cross section of the air outlet of the wind pipe L = 20 m, the ventilation time is from 1 to 30 min and the concentration of CO at the cross section has a nonlinear decreasing trend with the ventilation time, which can be deduced according to the different space–time change models.

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Applying computational fluid dynamics in research on ventilation safety during underground hard coal mining: A systematic literature review

Cited by 38 publications

References 138 publications

The role, importance and impact of the methane hazard on the safety and efficiency of mining production

The role, importance and impact of the methane hazard on the safety and efficiency of mining production

Exploring the adoption of technology against delays in construction projects

CO Diffusion Study and Spatial and Temporal Variation Modeling during the Construction Period of the Plateau Railroad Tunnel

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