Simulation of a methane fire event at a coal mine working face with consideration of ventilation curtain damage

Transactions ◽  
2016 ◽  
Vol 340 (1) ◽  
pp. 120-126
Author(s):  
A. Haghighat ◽  
K. Luxbacher ◽  
B. Lattimer
Keyword(s):  
Coal Mine ◽  
Mine Working ◽  
Fire Event ◽  
Working Face

Water Probe in Coal Mine Working Face

2013 ◽  
Vol 734-737 ◽  
pp. 888-891
Author(s):  
Chen Shi
Keyword(s):  
Hydraulic Conductivity ◽  
Coal Mining ◽  
Coal Mine ◽  
Mine Working ◽  
Mine Water ◽  
Theoretical Calculations ◽  
Drainage System ◽  
Water Inflow ◽  
Interference Method ◽  
Working Face

Water probe in coal mine working face is an important part of the work of Mine Water. When the mine working face close to the aquifer hydraulic conductivity faults, underground rivers, caves and hydraulic conductivity collapse columns; extractive damaging effects, water probe should be done. However, the calculation of water inflow face probe has no feasible way. This paper discussed the theoretical calculations to explore water drilling inflow well group interference method and provides the basis for provision of drainage system for the coal mining enterprises.

Tenability analysis for improvement of firefighters’ performance in a methane fire event at a coal mine working face

2018 ◽  
Vol 36 (3) ◽  
pp. 256-274 ◽  
Author(s):  
Ali Haghighat ◽  
Kray Luxbacher
Keyword(s):  
Coal Mine ◽  
Combustion Products ◽  
High Rate ◽  
Fire Event ◽  
Continuous Miner ◽  
Fire Brigade ◽  
Active Fire ◽  
Working Face ◽  
Computational Fluid Dynamics Analysis ◽  
Mine Rescue

Due to the high rate of methane ignitions at active continuous miner working faces in underground coal mines, this location has been the focus of many researchers, as well as safety initiatives. Multiple ignitions occur annually in US mines, and outcomes vary widely based on the magnitude of the ignition and the subsequent damage to ventilation controls or development of active fire. Depending on the magnitude of the explosion or fire, auxiliary ventilation controls, such as exhausting line curtain or tubing may be damaged or completely removed, affecting the ventilation into the area. Investigation of a typical dead end continuous miner working face with exhausting ventilation was undertaken to explore firefighting conditions post ignition. Regular mining crews are trained in the fighting of mine fires, while mine rescue or fire brigade teams may also be utilized for firefighting depending upon the conditions. The research in this article develops an approach to analyze the tenable limits in a fire event in an underground coal mine for barefaced miners, mine rescue teams, and fire brigade teams in order to improve safety and training of personnel trained to fight fires. A detailed computational fluid dynamics analysis was conducted to investigate temperature, visibility, radiation, and concentration of combustion products based on different damage assumptions following an ignition at the continuous miner working face. The source of the combustion products analysis and the exposure effects were considered to assess the potential for harm to mine personnel, mine rescue teams, or fire brigades during a firefighting operation, taking into account their training and personal protective equipment during the 5- and 15-min exposure. This study has shown that if the exhausting line curtain was destroyed, the situation would not be tenable for barefaced personnel. The findings were utilized to recommend the tenable limits for barefaced miners, mine rescue team, and fire brigade teams during the 15-min exposure to the methane fire at a continuous miner working face. The outcome of this research, applied to training, will result in the more efficient evacuation, as well as safe and effective firefighting under certain conditions.

scholarly journals Coal Wall and Roof Segmentation in the Coal Mine Working Face Based on Dynamic Graph Convolution Neural Networks

ACS Omega ◽  
2021 ◽  
Author(s):  
Zhizhong Xing ◽  
Shuanfeng Zhao ◽  
Wei Guo ◽  
Xiaojun Guo ◽  
Shenquan Wang ◽  
...  
Keyword(s):  
Neural Networks ◽  
Coal Mine ◽  
Mine Working ◽  
Dynamic Graph ◽  
Convolution Neural Networks ◽  
Working Face ◽  
Coal Wall

Light Source Distribution for Visible Light Communication in Coal Mine Working Face Based on Position and Power Co-Optimization

2019 ◽  
Vol 46 (4) ◽  
pp. 0406001 ◽  
Author(s):  
游春霞 You Chunxia ◽  
胡青松 Hu Qingsong ◽  
李世党 Li Shidang ◽  
马勇 Ma Yong ◽  
陈浩 Chen Hao
Keyword(s):  
Visible Light ◽  
Light Source ◽  
Coal Mine ◽  
Mine Working ◽  
Visible Light Communication ◽  
Source Distribution ◽  
Working Face

A fiber Bragg grating tilt sensor for posture monitoring of hydraulic supports in coal mine working face

Measurement ◽  
2019 ◽  
Vol 138 ◽  
pp. 305-313 ◽  
Author(s):  
Minfu Liang ◽  
Xinqiu Fang ◽  
Shuang Li ◽  
Gang Wu ◽  
Meng Ma ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Coal Mine ◽  
Mine Working ◽  
Bragg Grating ◽  
Working Face ◽  
Posture Monitoring ◽  
Tilt Sensor ◽  
Hydraulic Supports
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