Experiments on the Coal Measures Sandstone’s Dynamic Mechanical Parameter Characteristics under the Combined Action of Temperature and Dynamic Load

Zhao, Enlai; Wang, Enyuan; Chen, Haopeng

doi:10.3390/app132413125

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…From the data given in the technical documentation for optocouplers (EOS-photodiode, we know the coefficient k L ) (Figure 3) [84][85][86]. RMS value of the noise at the CVC output Us is described by the expression:…”

Section: 16 X For Peer Review 7 Of 23mentioning

confidence: 99%

Methane Emission Estimation Tools as a Basis for Sustainable Underground Mining of Gas-Bearing Coal Seams

Sidorenko,

Trushnikov,

Sidorenko

2024

Sustainability

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Underground coal mining of gas-bearing coal seams is accompanied by the emission of large amounts of methane, which increases with depth. Coal seam methane is not only a major cause of major accidents in coal mines, but is also a greenhouse gas that has a significant negative impact on the Earth’s atmosphere. Analysis of the efficiency of underground coal mining suggests that as the depth of mining increases, the productivity of a longwall decreases by a factor of 3–5 or more, while the specific volume of methane emitted increases manifold and the efficiency of methane management decreases. Effective management of coal seam methane can only be achieved by monitoring its content at key points in a system of workings. Monitoring of methane not only eliminates the risk of explosions, but also lets us assess the effectiveness of using methane management techniques and their parameters to improve efficiency and reduce the cost of methane management (including a methane drainage) for ensuring sustainable underground coal mining. The aim of this article is to develop a software and hardware complex for monitoring methane in a coal mine by creating a simulation model for monitoring methane. The Arduino Uno board and the methane sensor MQ-4 were used for this purpose. In this article, the causes of methane emissions in coal mines, gas control systems, the structure of the mine monitoring system, and the causes of risks and occurrence of accidents in coal mines are considered. As a result of the work, the mathematical model of the methane measurement sensor was developed; the Arduino Uno board developed a simulation system for methane monitoring; and the numerical results of the research are presented in the graphs.

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Section: 16 X For Peer Review 7 Of 23mentioning

confidence: 99%

Methane Emission Estimation Tools as a Basis for Sustainable Underground Mining of Gas-Bearing Coal Seams

Sidorenko,

Trushnikov,

Sidorenko

2024

Sustainability

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Research on Hotspots and Evolutionary Trends in Coal Mine Gas Prevention

Zhao,

Gao,

Ruan

et al. 2024

Processes

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Mine gas accidents have received widespread attention at home and abroad, because mine gas accidents often cause casualties and property losses once they occur. This study was conducted in order to have a more comprehensive understanding of the research status of and research hotspots in coal mine gas management at home and abroad, and to provide references for relevant researchers’ studies and literature searches. Using the Web of Science (WOS) core database as the data source, this paper analyzed the data from the period of 2000–2023 under the headings of “gas governance”, “Gas Control Technology”, “Pre-mining gas methods in coal mines”, “Methods of Gas Mining in Coal Mines”, “Post-mining gas”, and “Post-mining gas methods in coal mines”. “Methods in Coal Mines”, “Methods of Gas Mining in Coal Mines”, and “Post-mining Gas Methods in Coal Mines” were searched, and the CiteSpace tool was utilized to provide a multi-dimensional visual presentation of the literature, including authors, the number of journals issued, countries of issue, keywords, etc., in order to explore the research hotspots in this field. The analysis results show the following: the development process in the field of gas prevention and control is mainly divided into the three stages of initial exploration, steady development, and explosive surge; China, Australia, and the United States are the top three countries in terms of the number of articles published, and they have a greater influence in the field, but there is a closer connection between the regions in Europe; a certain group size has been formed by the researchers and research institutes in this field, the China University of Mining and Technology is more active in this field, ranking as the first in terms of the number of articles issued, and it has a cooperative relationship with many universities; Kai Wang and Enyuan Wang are the core authors in this field, while C. Ozgen Karacan also has a large body of research in the field, and his research results are widely recognized; the main journals issued in this field are Fuel and Energy Policy, while other journals have been frequently cited, and these journals have an important role in the field. In these journals, “Coal mine methane: A review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction” is one of the most important articles in the field. Thin coal seams, coal mining workings, and coal and gas protrusion are current research hotspots.

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Experiments on the Coal Measures Sandstone’s Dynamic Mechanical Parameter Characteristics under the Combined Action of Temperature and Dynamic Load

Cited by 2 publications

References 24 publications

Methane Emission Estimation Tools as a Basis for Sustainable Underground Mining of Gas-Bearing Coal Seams

Methane Emission Estimation Tools as a Basis for Sustainable Underground Mining of Gas-Bearing Coal Seams

Research on Hotspots and Evolutionary Trends in Coal Mine Gas Prevention

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