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Abstract

Mine gas explosions present a serious safety threat in the worldwide coal mining industry. It has been considered the No.1 killer for underground coal mining workers. The formation of an explosive atmosphere involves various factors. Due to complicated stratified geology and the coal production process, geological conditions and coal production process reasons and particular working sections underground present a high risk of an explosion that would most likely cause casualties and property loss. In this study, the basic conditions, propagation law and hazards analysis of gas explosions are reviewed, followed by a review of the typical locations where an explosion would occur. Finally, current technologies used in the mining industry for preventing gas explosions and suppressing the associated dangers were studied. Preventive gas explosion technologies mainly include gas drainage, gas accumulation prevention and gas and fire source monitoring technologies. The technologies often used to control or mitigate gas explosion hazards are usually divided into active and passive, and the advantages and disadvantages of each method are discussed and compared. This paper aims to summarise the latest technologies for controlling and suppressing gas explosion and guides mining engineers to design risk mitigation strategies.
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Authors and Affiliations

Wanting Song
1
ORCID: ORCID
Jianwei Cheng
1
ORCID: ORCID
Wenhe Wang
2
Yi Qin
2
Zui Wang
1
Marek Borowski
3
ORCID: ORCID
Yue Wang
4
ORCID: ORCID
Purushotham Tukkaraja
5
ORCID: ORCID

  1. China University of Mining and Technology, College of Safety Engineering, Xuzhou 221116, China
  2. Chongqing University of Science and Technology, College of Safety Engineering, Chongqing 401331, China
  3. AGH University of Science and Technology, Faculty of Mining Engineering, al. Mickiewicza 30, 30-059 Krakow, Poland
  4. Xinjiang Institute of Engineering, College of Safety Science and Engineering, Urumqi 830000, China
  5. South Dakata School of Mines and Technology, Department of Mining Engineering and Management, Rapid City, SD, 57701, United States
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Abstract

This article provides an overview of the PASIFIC programme – Polish Academy of Sciences Innovations and Creativity. It is co-funded by the European Union’s Horizon 2020 research and innovation programme under the Marie-Skłodowska Curie Actions and the Ministry of Education and Science. It comprises a list of scientific disciplines of the awarded research projects, descriptions of the selected scientists and their work, networking activities bonding the PASIFIC community, offered trainings, a subjective perspective of our scientists on the implementation of the programme and what might come in the future.
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Authors and Affiliations

Jakub Urbański
1
Paweł M. Rowiński
2

  1. Biuro ds. Doskonałości Naukowej PAN
  2. Instytut Geofizyki PAN
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Abstract

A detailed analysis of the upper Viséan, Serpukhovian and Bashkirian Rugosa of the Donets Basin confirms their Mississippian/Pennsylvanian turnover during the Eumorphoceras / Homalophyllites–Hudsonoceras Zone, as postulated earlier (Fedorowski 1981a). The deterioration of rugose corals, globally diverse in time and space in the late Viséan and Serpukhovian, has resulted in the patchy distribution of survivors and newcomers, present in the Bashkirian. Difficulties in inter-basinal communication and the isolation of some sites have resulted in a different content of Bashkirian Rugosa in particular patches, with only rare genera in common. New data has made it possible to document the appearance of the first late Carboniferous genera in the Donets Basin as early as the lower Voznessenkian Horizon (= lower Chokierian Substage), i.e., close to the beginning of the Bashkirian Stage. The two stages of diversification, established in the Bashkirian rugose corals of the Donets Basin, cannot find their counterparts elsewhere. A palaeogeographic overview of the most important sites of diversified rugose corals documents the need to re-examine many taxa, which should be based on complete specimen studies. This and the precise placement of taxa in the modern stratigraphy must be done in order to make rugose corals globally comparable. Simple repetitions of names, commonly used in general summaries, is strongly misleading in both stratigraphic and palaeogeographic reconstructions.
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Authors and Affiliations

Jerzy Fedorowski
1

  1. Institute of Geology, Adam Mickiewicz University, Bogumiła Krygowskiego 12, 61-680 Poznań, Poland

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