Experimental Research of Three-Phase Foam Fire-Fighting Technology in 7312-2 Caving Face Prevention Goal of a Coal Mine

2012 ◽  
Vol 594-597 ◽  
pp. 2257-2261
Author(s):  
Liu Jian ◽  
Ming Ming Liu ◽  
Zhen Hua Xie
Keyword(s):  
Fly Ash ◽  
Experimental Research ◽  
Coal Mine ◽  
Spontaneous Combustion ◽  
Fire Fighting ◽  
Laboratory Studies ◽  
Three Phase ◽  
Safety Production ◽  
Spontaneous Combustion Of Coal ◽  
Environmental Prevention

Spontaneous combustion of coal is a serious threat to the normal working of the mine and the safety of miners, the research to prevent spontaneous combustion of coal has a great significance. Technology based on the three-phase bubble theory, combined with characteristics of coal of 7312-2 caving face of a coal mine in Xuzhou, using laboratory studies to determination the fly ash , Wong and a variety of surfactant , then determining the formula of three-phase foam which is fit for a coal mine coal, it can restrain goal spontaneous combustion effectively and beneficial to safety production and environmental prevention.

Research on Technology for Preventing Spontaneous Combustion of Coal

2012 ◽  
Vol 524-527 ◽  
pp. 677-680 ◽  
Author(s):  
Zhao Jun Tian ◽  
Xue Liang Li
Keyword(s):  
Coal Mine ◽  
Spontaneous Combustion ◽  
Fire Prevention ◽  
Primary Analysis ◽  
Three Phase ◽  
Spontaneous Combustion Of Coal ◽  
Made In

A primary analysis is made in technology for preventing spontaneous combustion of coal to address the risk of safety in production of coal mine for spontaneous combustion of coal. The fire prevention effect and principle of fire per-venting technology were introduced in this paper, especially three phase foam and foamed gel were introduced in emphasis.

scholarly journals Prediction Model for Spontaneous Combustion of Coal around Boreholes Using Bedding Gas Drainage

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Youxin Zhao ◽  
Qingjie Qi ◽  
Xinlei Jia
Keyword(s):  
Coal Seam ◽  
Coal Mine ◽  
Negative Pressure ◽  
Spontaneous Combustion ◽  
Orthogonal Test ◽  
Gas Drainage ◽  
Positive Linear Correlation ◽  
Drainage Hole ◽  
Spontaneous Combustion Of Coal ◽  
Fractured Coal

To accurately and reliably predict the time of spontaneous combustion of fractured coal around a borehole induced by gas drainage along the seam, this study performed an orthogonal test taking the No. 10 Coal Mine of Pingdingshan as the research object, in terms of the suction negative pressure and coal seam buried depth. COMSOL Multiphysics was used to model the orthogonal test results, and a multielement statistical analysis of four factors and their relationships with the spontaneous combustion of coal around the borehole and a single-factor analysis in line with the site conditions were performed on the modeling results through multiple regression. The results showed a nonlinear regression relationship between the sealing hole length, sealing hole depth, negative pressure, and coal seam depth and the spontaneous combustion of the coal around the gas drainage borehole; the prediction regression model is significant. Taking the field gas drainage in the No. 10 Coal Mine of Pingdingshan as an example, the relationship between the time of spontaneous combustion of gas drainage and the drainage pressure follows a power of two. When the drainage negative pressure is less than 45 kPa, the coal around the borehole is more likely to undergo spontaneous combustion with increasing pressure, and the sealing hole length has a positive linear correlation with the time of spontaneous combustion of the coal around the borehole. When the sealing hole length is 23 m, the time of spontaneous combustion of the coal around the gas drainage hole is >500 days, and the coal around the borehole does not easily undergo spontaneous combustion. When the sealing depth is 15 m, the time of spontaneous combustion of the coal around the gas drainage hole is 76 days, which is most likely to cause spontaneous combustion.

Gob coal mine tunnel temperature changes caused by spontaneous combustion of coal online monitoring

2014 ◽  
Vol 40 (5) ◽  
pp. 399-401 ◽  
Author(s):  
李佳奇 LI Jiaqi ◽  
倪建明 NI Jianming ◽  
陈贵 CHEN Gui ◽  
刘文革 LIU Wenge ◽  
田驰 TIAN Chi ◽  
...  
Keyword(s):  
Coal Mine ◽  
Online Monitoring ◽  
Spontaneous Combustion ◽  
Temperature Changes ◽  
Spontaneous Combustion Of Coal

The Technology of Liquid CO2 Used for Fire Prevention and the Related Device

2011 ◽  
Vol 347-353 ◽  
pp. 1642-1646 ◽  
Author(s):  
Yong Bao Shu ◽  
Wen Jun Li ◽  
Zhong Xue Li
Keyword(s):  
High Speed ◽  
Spontaneous Combustion ◽  
Fire Fighting ◽  
Fire Prevention ◽  
Stable Operation ◽  
Simple Operation ◽  
Actual Application ◽  
Fire Area ◽  
Spontaneous Combustion Of Coal ◽  
And Control

In order to avoid spontaneous combustion of coal, reduce cost and improve the effect of fire prevention and extinction, this essay brings about the technology and related device to prevent and control the spontaneous combustion of coal based on the properties of fire prevention and extinction of the liquid CO2 toward fire area, such as: asphyxiation oxygen, cooling down and inerting. The technical difficulties such as the safety packing, transportation and perfusion to the fire area underground of liquid CO2 are solved. The liquid CO2 is transported safely to the fire area underground and are infused to fire area in the form of liquid. The on site operation and test proved that the fire-fighting technology and device has the following advantages: high speed, simple operation, adjusted continuously, stable operation, and significant and reliable fire prevention effect. It accords with the actual application and has great practical value.

Research and development of foamed gel for controlling the spontaneous combustion of coal in coal mine

2016 ◽  
Vol 44 ◽  
pp. 474-486 ◽  
Author(s):  
Gang Wang ◽  
Guoqiang Yan ◽  
Xinhua Zhang ◽  
Wenzhou Du ◽  
Qiming Huang ◽  
...  
Keyword(s):  
Research And Development ◽  
Coal Mine ◽  
Spontaneous Combustion ◽  
Spontaneous Combustion Of Coal
Sign in / Sign up

Export Citation Format

Share Document