Investigation of Spontaneous Combustion of Coal in Underground Coal Mining

Ozdeniz, Hadi; Sivrikaya, Osman; Şensöğüt, Cem

doi:10.1007/978-3-319-02678-7_61

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The results of Graham's ratio are shown in Table 2. According to Ozdeniz et al (2014) [8] shows different ranges of combustion risk for longwall coal mine that are shown in Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…Auto-oxidation or spontaneous combustion of coal is a serious problem that leads various safety problems in mining, long distance transportation and storage areas as well as economic losses [3] [4]. It is a self heating process that occurs when oxygen reacts with coal without influences of any external heat by which it produces various toxic gases likely CO, CO 2 , CH 4 and water vapor [5]- [8] that are harmful for any kind of coal mine and decomposition of these materials leading to the liberation of heat [9].…”

Section: Introductionmentioning

confidence: 99%

“…Graham's ratio scale[8] (Ozdeniz et al, 2014). Open fire or definitely combustion risk for longwall.…”

mentioning

confidence: 99%

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Investigation the Risk of Spontaneous Combustion in Barapukuria Coal Mine, Dinajpur, Bangladesh

Ahamed¹,

Monir²,

Biswas³

et al. 2016

GEP

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Spontaneous combustion of coal is one of the major problems in the coal mine. The fire may occur due to exogenous and endogenous causes, by which coal liberated heat to the air or heat absorbed into it. It causes loss of production, as well as economical or financial losses and polluted the environment. If, the heat liberated during this process is allowed to accumulate, the rate of reaction increases exponentially and there is a further rise in temperature that generates the flame and produce CO, CO 2 , CH 4 , N 2 , O 2 etc. In addition, the heat generated within coal affected by different factors such moisture, ash, volatile matter etc. of coal. This paper deals with the oxidation and spontaneous combustion risk in Barapukuria underground longwall coal mine, Dinajpur, Bangladesh. In this study, the laboratory analyses (proximate analyses) shows the inherent and the total moisture content value is average 2.73% and 5.82% to 12.75%, respectively. It indicates that these moisture contents are moderately liable to self heating. The less ash content value (av.13.2%) shows, it is less liable to spontaneous combustion. In addition to this, the temperature and concentration of some mine gases (CO, N 2 , O 2) were monitored to calculate the Graham's ratio. According to Graham's ratio, the longwall faces have high oxidation risk and medium combustion risk. Therefore, the actual control of spontaneous combustion of coal is important to save coal mine from mine fires and also provides a real opportunity to improve the financial performance of the overall organization.

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“…The results of Graham's ratio are shown in Table 2. According to Ozdeniz et al (2014) [8] shows different ranges of combustion risk for longwall coal mine that are shown in Table 3.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation the Risk of Spontaneous Combustion in Barapukuria Coal Mine, Dinajpur, Bangladesh

Ahamed¹,

Monir²,

Biswas³

et al. 2016

GEP

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show abstract

“…Self-heating in coal stockpiles usually occur in the long-term storage of thermal power stations, in open cast mines, underground old workings, highwall, waste dumps and transportation in cargo ships or trains covering long distances (Carras and Young 1994;Moghtaderi et al 2000;Zhu et al 2013). Due to the high cost of running industrial scale tests and the period required to run one experiment, limited industrial scale tests have been reported for a better understanding on the mechanism of self-heating in large-scale tests (Cliff et al 1998;Ozdeniz et al 2011Ozdeniz et al , 2014Ozdeniz and Sensogut 2006). Coal stockpiles experience low self-heating which minimizes the calorific value and the amounts of coal stocked.…”

Section: Areas Of Coal Self-heatingmentioning

confidence: 99%

Spontaneous combustion liability of coal and coal-shale: a review of prediction methods

Onifade

Genc

2019

Int J Coal Sci Technol

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This study presents a review of the various methods to predict the spontaneous combustion liability of coal and coal-shale. The relative propensity of coal to undergo self-heating can be established by different methods. These methods are well established in their usage, but the fact that no particular test method has become a standard to predict the spontaneous combustion liability indicates that doubt still exists as to the validity of all of them. The underlying principle of all the tests is that the more readily the coal undergoes exothermic oxidation, the more liable it is to self-heat. Comprehensive studies that centres on the international position on research being conducted by academics, different research institutes and industries on spontaneous combustion of coal and coal mine fires were evaluated. Relationships between the geochemical analysis (proximate and ultimate analysis, forms of sulphur, petrographic properties, X-ray diffraction and X-ray fluorescence) and spontaneous combustion testing methods (numerical and experimental approaches) used to predict the spontaneous combustion liability of coal were reviewed. The combination of these tests provides a better understanding of the mechanism that controls the spontaneous combustion phenomena. However, irrespective of the extensive studies that have been conducted over time, spontaneous combustion is still a major problem in the coal value chain.

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“…In the case of this study excavation in the opencast areas create "breakthroughs" into the underlying mined out areas causing spontaneous combustion. Spontaneous combustion of coal pillars occur when the coal reacts with oxygen causing an exothermic reaction (Ozdeniz, Sivrikaya , & Sensogu, October 2013). …”

Section: Introductionmentioning

confidence: 99%

Rasberry Pi and BeagleBones: Evaluating a cost-effective GPS system for on-mine navigation

Grobler¹,

Walt²

2017

SA J of Geomatics

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The South African Mine Health and Safety Act (MHSA) requires the mine surveyor to inform the manager of all workings within 100 metres of other workings, abandoned areas and hazardous accumulations of water or gas. The main purpose of this requirement is to ensure that all employees are aware and can take all the necessary precautions against un-planned breakthroughs, falls of ground and subsidence. In the case where mines are mining through abandoned workings in order to remove remnant pillars and previously unmined reserves, the potential for subsidence and equipment falling into excavated areas become a reality. A single incident where a machine falls into a collapsed working can amount to in excess of R1 million per incident, excluding the risk of loss of life or serious injury. An unplanned collapse of workings in the specific case study can also lead to sufficient air flow into the old underground to cause spontaneous combustion of the remaining pillars. Although systems for navigation of drill rigs exist the cost to deploy a similar unit to all vehicles in the mining area is prohibitive. A low-cost system that can navigate a vehicle and indicate to the operator what the subsurface features look like in the direct surroundings of the vehicle was developed using off-the-shelf technologies. This paper discusses the process of developing a low-cost navigation system towards a real time information management system for a mining operation. Benefits from this system may be applied in underground navigation and guiding rescue services in the search of illegal miners in abandoned mines.

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Investigation of Spontaneous Combustion of Coal in Underground Coal Mining

Cited by 5 publications

References 11 publications

Investigation the Risk of Spontaneous Combustion in Barapukuria Coal Mine, Dinajpur, Bangladesh

Investigation the Risk of Spontaneous Combustion in Barapukuria Coal Mine, Dinajpur, Bangladesh

Spontaneous combustion liability of coal and coal-shale: a review of prediction methods

Rasberry Pi and BeagleBones: Evaluating a cost-effective GPS system for on-mine navigation

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