Development of a New Material for Mine Fire Control

Zhang, Leilin; Qin, Botao

doi:10.1080/00102202.2014.890600

Cited by 35 publications

(13 citation statements)

References 27 publications

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“…The particles contribute to improve the foam stability. 35,36 As scanned by Nikon TS100 inverted fluorescence microscope in Figure 13, some powders are adsorbed in the liquid membrane and the other are coalescence in the plateau border that is also observed by Jiang. 37 Those small solid powders frame a net skeleton structure in the interior three-phase foam that is helpful for postponing the liquid membrane attenuation.…”

Section: Stabilized Plugging Property Of Threephase Foamsupporting

confidence: 58%

“…35,36 As scanned by Nikon TS100 inverted fluorescence microscope in Figure 13 the goaf was serious during the mining-pause period, and smoke even erupted from the top coalface. 35,36 As scanned by Nikon TS100 inverted fluorescence microscope in Figure 13 the goaf was serious during the mining-pause period, and smoke even erupted from the top coalface.…”

Section: Stabilized Plugging Property Of Threephase Foammentioning

confidence: 99%

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Research on a noble extinguish material for the underground fire prevention

Han

Xue

et al. 2019

Fire and Materials

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Summary The three‐phase foam consisted of solid, liquid and gas is regarded as a highly effective measure for the underground mine fire prevention. In this study, the three‐phase foam technology is introduced and a visualization platform is established to exhibit the foam flow in a physical goaf. The diffusion rule and extinguishing performance for three‐phase foam are researched. Test results show that the three‐phase foam has a superior heat resistance than expansion foam in the top goaf. The coal heating rate is postponed after the three‐phase foam processing and the active functional groups are suppressed effectively. Increasing the foam expansion ratio is adverse to the three‐phase foam stability. The field application of three‐phase foam was evaluated via the practical extinguishment effect. The marked reduction in the sealed zone temperature and CO concentration proved that the proposed three‐phase foam technology was effective on controlling the concealed goaf fire.

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Section: Stabilized Plugging Property Of Threephase Foamsupporting

confidence: 58%

Section: Stabilized Plugging Property Of Threephase Foammentioning

confidence: 99%

Research on a noble extinguish material for the underground fire prevention

Han

Xue

et al. 2019

Fire and Materials

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“…After a period of time, in the foam liquid films, the thickener has interaction with crosslinker, forming three-dimensional network structures, which constitutes the rigid backbone of foamed gel, significantly improving the foam stability. The foamed gel has all the properties of the methods of injecting nitrogen, foam, and gel, effectively increasing the efficiency of fire prevention and extinguishing, such as utilizing the asphyxia of nitrogen, the accumulation of foam, and the coverage of gel (Zhang and Qin 2014;Qin et al 2005). In order to investigate the fire extinguishing efficiency, the foamed gel made in laboratory is used to conduct a research on extinguishing coal fire.…”

Section: Introductionmentioning

confidence: 97%

The fire extinguishing performances of foamed gel in coal mine

et al. 2016

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Experiments have been made to investigate how mass concentrations of thickener and crosslinker blends and foaming multiple affect temperature resistance of foamed gel. The results show that, at 100°C, the time for temperature tolerance of common foam is only 196 s, while the time of foamed gel formed by thickener and crosslinker with the mass fractions of both 0.3, 0.4 and 0.5 % is 570, 604 and 780 s, respectively. When the foaming multiple is 5, the time for temperature resistance is 620 s. But the time reduces to 360 s as the foaming multiple increases to 30. Furthermore, researches are also conducted on the extinguishing effect of foamed gel. It can be known from the results that, when putting out the coal fire with similar size, the volume of foamed gel used is only one-ninth of that of common foam and the extinguishing time is less than half of common foam. With increasing in the mass concentration of thickener and crosslinker blends, the extinguishing time first shortens and then prolongs. When the mass fraction of complex solution mixed by thickener and crosslinker is 0.6 %, the extinguishing efficiency is the highest. If the foaming multiple is 5, the extinguishing time is the shortest. However, the time remains constant when the foaming multiple is over 20.

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“…The results show that this foam can be used to fill fractures and reinforce coal walls, stop leakage, block wind, and therefore inhibit the spontaneous combustion of coal. Zhang researched types of gel foams with the combined properties of foams and gels, which showed good stability and high fire‐extinguishing efficiency. Tang studied the inhibition of aerosols on low‐temperature oxidation of coals and considered that an aerosol can be used as a new material for controlling spontaneous combustion disasters in coal.…”

Section: Introductionmentioning

confidence: 99%

A novel sodium carboxymethyl ellulose/aluminium citrate gel for extinguishing spontaneous fire in coal mines

Zhou

Tang

2018

Fire and Materials

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Summary Spontaneous combustion of coal is one of the main disasters affecting safe production in mines. A sodium carboxymethyl cellulose/aluminium citrate gel for prevention and extinguishing of mine fires was prepared. Based on a temperature‐controlled experiment, the authors studied the influences of the gel on indicator gases generated in the spontaneous combustion of coal, crossing point temperature, and activation energy. The results showed that the crossing point temperature of coal samples treated by the gel increased by more than 13.9°C and the activation energy rose by 7.17 to 16.34%. Moreover, the indicator gases, such as CO and C2H4 generated in the oxidation, decreased significantly. After treatment with the gel, the weight loss rate of the coal samples was reduced, and less energy was released. By using the self‐developed test platform (coal capacity of 2 m3), the spontaneous combustion of coal on the roof of a roadway was simulated, and the carboxymethyl cellulose/aluminium citrate gel was used for fire extinguishing. After injecting the gel, the temperature in the furnace rapidly decreased, and the concentration of O2 remained at less than 3%, without showing any after‐combustion effects.

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Development of a New Material for Mine Fire Control

Cited by 35 publications

References 27 publications

Research on a noble extinguish material for the underground fire prevention

Research on a noble extinguish material for the underground fire prevention

The fire extinguishing performances of foamed gel in coal mine

A novel sodium carboxymethyl ellulose/aluminium citrate gel for extinguishing spontaneous fire in coal mines

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