On the deepening mechanism of the site of peat combustion

Гришин, А. М.; Zima, V. P.; Касымов, Д. П.

doi:10.1007/s10891-013-0920-1

Cited by 13 publications

(11 citation statements)

References 1 publication

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“…The penetration of the fire front, modeled by the forest fuels (needle litter) and located on the peat surface, into the peat was studied using a test complex [18] according to the schemes represented in Fig. 2.…”

Section: -2mentioning

confidence: 99%

“…2. Since, in the nature the underlying surface is located over the peat [18], the two different scenarios are modeled for the surface fire: 1) (Fig. 2, a) the fire front, modeled by forest fuels (FF), moves to the peat deposits located under the soil; 2 (Fig.…”

Section: -2mentioning

confidence: 99%

“…It is necessary to emphasize the works [12,13] which analyze the thermal and physical peat properties (thermal conductivity, heat capacity, combustion heat of a substance) determining the velocity of the smoldering front and the heat exchange of fuels with the environment. The experimental studies concerning the propagation of peat fires are considered in [14][15][16][17][18]. As a result, the initial temperature of the ignition source was obtained versus the heat exchange with the ambient air and the moisture content of peat, and the modes of ignition and smoldering of peat were investigated in the air flow and in the absence of the air flow in the laboratory conditions.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of the influence of ignition source position on the parameters of peat fire propagation

Касымов¹,

Agafontsev²

2016

AIP Conference Proceedings

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Abstract. The penetration of smoldering combustion into the peat layer was experimentally studied taking into account a different botanical peat composition typical in the Tomsk region of Russia. The laboratory tests allowed us to obtain and analyze the temperature of the peat samples versus time, and also to estimate the velocity of the smoldering combustion in the horizontal and vertical directions. The results showed the faster penetration of smoldering combustion into the grass-sphagnum peat compared with the pine-cotton peat. The botanical composition and the flow of oxidizers in the combustion zone have a significant effect on the smoldering combustion, especially on the penetration of smoldering front into the peat layer. The chaotic distribution of the fuel particles contributes to the propagation of smoldering combustion both in the horizontal and vertical direction and influences on the spread of the smoldering front.

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Section: -2mentioning

confidence: 99%

Section: -2mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental study of the influence of ignition source position on the parameters of peat fire propagation

Касымов¹,

Agafontsev²

2016

AIP Conference Proceedings

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“…High coefficients of variation of PAHs in residual peat horizons could be caused by different durations and depths of heating of these horizons at different sites. The depth of changes in soils differs depending on the fire intensity and location characteristics (varying moisture content, microrelief and peat thickness) (Efremova and Efremov, 2006;Grishin et al, 2013).…”

Section: Profile Distribution Of Pahs In Soils Of Different Typesmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons in post-fire soils of drained peatlands in western Meshchera (Moscow region, Russia)

et al. 2014

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Abstract. Polycyclic aromatic hydrocarbons (PAHs) are priority pollutants that arrive in the environment from numerous anthropogenic and natural sources, but the data on their natural sources including wildfires remain insufficient. The level of contamination and the composition of PAHs in soils of the areas affected by wildfires were studied in this work. The study was conducted in the Moscow region (Russia) in areas occupied by drained peatland and strongly damaged by fires in 2002, 2010 and 2012. The features of PAH accumulation and the profile distributions in histosols and histic podzols after the fires of different times were analyzed. It was shown that new soil horizons formed after the fires -Cpir, Hpir and incipient O horizons -and that these horizons differ in PAH accumulation rate. Maximal total concentrations of 14 PAHs were detected in charred peat horizons Hpir (up to 330 ng g −1 ) and in postfire incipient O horizons (up to 180 ng g −1 ), but the highmolecular-weight PAHs (benz(ghi)perylene, benz(a)pyrene, benz(k)fluoranthene) were revealed only in charry peat horizons. The trends of higher PAH concentrations were found in cases when smoldering combustion resulted in rather thick residual peat horizons. In cases of almost complete pyrogenic destruction of He horizons, total PAH concentrations were no more than 50 ng g −1 . Also, PAH accumulation in upper horizons of soils near the sites of the latest fires was observed.

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“…Wildfires cause significant material and economic damage to the territories. Numerous theoretical [1][2][3] and experimental investigations [4][5][6][7] conducted to study the effect of fires do not explain the mechanism of fire transition to the wooden constructions, their ignition and subsequent combustion.…”

Section: Introductionmentioning

confidence: 99%

Studying the effect of fire retardant coating on the fire hazard characteristics of wood using infrared thermography

Касымов

Agafontsev

2017

EPJ Web Conf.

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This paper represents a study concerning the effect of fire retardant treatment «FUKAM» on the fire hazard characteristics of pine, aspen and larch. The front of model ground fire was investigated to estimate its effect on the surface of wood samples. Infrared thermography was used as a diagnostic method. The surface temperature distribution was obtained for the test wood samples after exposure to a fire front that was modeled using pine needles. The probability of ignition was estimated for the chosen experimental parameters for each kind of wood. The fire hazard characteristics of wood after fire retardant treatment showed a significant reduction in the surface temperature and the resistance to fire for the chosen parameters of the experiment compared to the same untreated samples.complete pyrolysis occur at a rate that is low to create a combustible concentration. In addition, as is known, for stable combustion the solid material should obtain the amount of heat that provides a continuous supply of the sufficient amount of gaseous combustible substances in the combustion zone [17].The use of fire retardant treatment (for example a fire retardant «FUKAM») certainly increases the resistance of wood to fire, which is confirmed by the data on the sample surface temperature after exposure to model combustion.

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On the deepening mechanism of the site of peat combustion

Cited by 13 publications

References 1 publication

Experimental study of the influence of ignition source position on the parameters of peat fire propagation

Experimental study of the influence of ignition source position on the parameters of peat fire propagation

Polycyclic aromatic hydrocarbons in post-fire soils of drained peatlands in western Meshchera (Moscow region, Russia)

Studying the effect of fire retardant coating on the fire hazard characteristics of wood using infrared thermography

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