Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)

Research on Dust Concentration Changing Regularities in Coal Releasing Operation of Fully Mechanized Caving Faces and Dust Reduction Technology

Authors
Lirong Wu, Weimin Cheng, Gang Zhou
Corresponding Author
Lirong Wu
Available Online October 2018.
DOI
https://doi.org/10.2991/coal-18.2018.52How to use a DOI?
Keywords
coal releasing operation; gas-solid two-phase flow; dust concentration; spray dust suppression
Abstract

Getting the changing law of dust concentration in fully mechanized coal caving face and taking specific measures can ensure the safety and health of workers. The dust migration rule of coal releasing process under different conditions was simulated by the software of FLUENT. The simulated result matches well with the related survey data. Considering the factors of velocity and mass flow quantity, the dust distribution function in the process of coal releasing was studied. According to the characteristics of the spray nozzle and the spray drop test, the nozzle is optimized. Combining the characteristics of dust generation in coal releasing and spray characteristics, based on the theory of negative pressure secondary dust suppression, the dust suppression device is developed and used in 3Top1110 coal mining face of Gao zhuang coal mine. Through the analysis of dust concentration changes after using the dust suppression device, the total dust and respirable dust removal rate was 79%~88%, and 56%~65% respectively. It is seen that the dust concentration of the working face was significantly decreased.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
Series
Advances in Engineering Research
Publication Date
October 2018
ISBN
978-94-6252-570-2
ISSN
2352-5401
DOI
https://doi.org/10.2991/coal-18.2018.52How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Lirong Wu
AU  - Weimin Cheng
AU  - Gang Zhou
PY  - 2018/10
DA  - 2018/10
TI  - Research on Dust Concentration Changing Regularities in Coal Releasing Operation of Fully Mechanized Caving Faces and Dust Reduction Technology
BT  - Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
PB  - Atlantis Press
SP  - 287
EP  - 292
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-18.2018.52
DO  - https://doi.org/10.2991/coal-18.2018.52
ID  - Wu2018/10
ER  -