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Open AccessJournal ArticleDOI

Hazard mitigation in coal mines

R V Rashmi, +3 more
- Vol. 263, Iss: 5, pp 052038
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TLDR
In this paper, an IoT based system is proposed to ensure safety to the mine workers in underground collieries, which consists of DHT-11 sensor to monitor the temperature and humidity of coal mines.
Abstract: 
Today's world witnesses increased number of mine accidents caused due to explosion and fire. When the methane gas concentration goes high, it causes fire leading to explosion. In this paper, an IoT based system is proposed to ensure safety to the mine workers in underground collieries. The proposed system consists of DHT-11 sensor to monitor the temperature and humidity of coal mines. When the gas sensor detects high methane gas level, blower is activated so that the atmospheric air can be pumped in from outside to dilute the gas concentration. The smoke sensor is also used to detect the fire. In case of any abnormality in any of these parameters the buzzer sounds. All these parameters are uploaded to the cloud directly so that the people at the control station can be well informed of the underground mines.

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References
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Journal ArticleDOI

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TL;DR: In this paper, the possible use of water spray as an explosion mitigation technique has been reconsidered in recent years and examples of previous uses of water sprays for combustion mitigation are given and observations of relevance to current explosion interests are noted.

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P. Eng
TL;DR: In this paper, the authors present a comparison of different types of barriers for stopping flame propagation of coal dust explosions in a 200m gallery, and discuss performance evaluation made in full-scale explosion galleries and the use of alternatives to passive barriers under some circumstances.
ReportDOI

BLAST INITIATED DELUGE SYSTEM An Ultra-High-Speed Fire Suppression System

Douglas S Dierdorf, +1 more
TL;DR: In response to incidents at munitions plants that have caused considerable equipment damage, production delays, and personnel injuries, the Air Force Research Laboratory's (AFRL) Fire Research Group at Tyndall Air Force Base has been working to invent a more effective deluge system capable of stopping high velocity fires caused by deflagration of explosives, propellants, and pyrotechnic materials.
Proceedings ArticleDOI

Wireless System for Explosion Detection in Underground Structures

Mikheil Chikhradze, +5 more
TL;DR: In this paper, a wireless system for explosions identification and activation of a defensive device is proposed, which consists of a transmitter and a receiver module equipped with a microprocessor equipped with blast identification software.
Journal ArticleDOI

Theoretical research on hazards and accident prevention

Zhang Yuebing, +3 more
- 01 Jan 2011 - 
TL;DR: By applying modern safety science viewpoints and accident-causing theory, and based on case studies, the development of hazard theory is briefed, and the structure and concept of hazards are analyzed.