INVESTIGATION OF THE JHARIA COALFIELD MINE FIRES - INDIA

India is in the list of fastest growing countries of the world. India's energy needs are also increasing due to population and industrial growth for improving quality of living style. In India, coal is major input infrastructure industries for example Power plants, Steel plants and Cement industries. India’s 52% of primary energy is coal dependent1. 66% of India's power generation depends upon coal production1. Jharia Coalfield (JCF) is falling in the Lower Gondwana Coalfields of India. The area of the JCF is about 450 km2. It is important for the major supply of precious coking coal required for steel plants in India. It is located in Dhanbad district of Jharkhand state of India, The latitude is 23° 39' to 23° 48' N and longitude is 86° 11' to 86° 27' E for the Jharia coalfield. Based on environmental parameters, all the 103 mines of BCCL have been grouped under 17 Clusters. A cluster consists of a group of mines with mine lease boundary lying in close vicinity and includes-Operating mines, Abandoned/ closed mines and proposed projects.The focused study area is in the western part of the Jharia coalfield is named as Cluster XV group of mines of BCCL consists of four mines, Kharkharee Colliery (UG), Dharmaband Colliery (UG), Madhuband Colliery (UG) and Phularitand Colliery (UG) .The present study was carried out with the objective to measure the ambient air quality of the study area with reference to particulate matter (SPM, PM10 & PM2.5). Ambient air monitoring results have shown that the observe air quality were found within the limit prescribed by MoEF / CPCB. It may due to Underground mines as there are pollution causing lesser activities involved in the UG mining process compared to opencast mining. Implementation of Master plan for Jharia coalfields for environmental management has also improve the air quality in the area10,11.

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Application of Model-Based Tests for Analysing the Consequences of Mine Fires

Multidisciplinary Aspects of Production Engineering ◽

10.2478/mape-2018-0097 ◽

2018 ◽

Vol 1 (1) ◽

pp. 767-774

Author(s):

Magdalena Tutak

Keyword(s):

Fire Hazard ◽

Physical Parameters ◽

Gas Mixture ◽

New Approach ◽

Model Based ◽

Underground Coal Mines ◽

Mine Fires ◽

Underground Mine Workings ◽

The Subject ◽

Chemical Products

Abstract One of the most common and most dangerous hazards in underground coal mines is fire hazard. Mine fires can be exogenous or endogenous in nature. In the case of the former, a particular hazard is posed by methane fires that occur in dog headings and longwalls. Endogenous and exogenous fires are large hazard for working crew in mining headings and cause economics losses for mining plants. Mine fires result in emission of harmful chemical products and have a crucial impact on the physical parameters of the airflow. The subject of the article concerns the analysis of the consequences of methane fires in dog headings. These consequences were identified by means of model-based tests. For this purpose, a model was developed and boundary conditions were adopted to reflect the actual layout of the headings and the condition of the atmosphere in the area under analysis. The objective of the test was to determine the effects of methane fires on the chemical composition of the atmosphere and the physical parameters of the gas mixture generated in the process. The results obtained clearly indicate that fires have a significant impact on the above-mentioned values. The paper presents the distributions for the physical parameters of the resulting gas mixture and the concentration of fire gases. Moreover, it shows the distributions of temperature and oxygen concentration levels in the headings under analysis. The methodology developed for the application of model-based tests to analyse fire events in mine headings represents a new approach to the problem of investigating the consequences of such fires. It is also suitable for variant analyses of the processes related to the ventilation of underground mine workings as well as for analyses of emergency states. Model-based tests should support the assessment of the methane hazard levels and, subsequently, lead to an improvement of work safety in mines.

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A Brief Overview Of Development In The Use Of Indicator Gases For Coal Spontaneous Combustion And Prospects For Further Solution / Stručný Přehled Vývoje Využití Indikačních Plynů Samovznícení Uhlí A Výhled Dalšího Řešení

GeoScience Engineering ◽

10.2478/gse-2014-0037 ◽

2012 ◽

Vol 58 (3) ◽

pp. 13-22 ◽

Cited By ~ 1

Author(s):

Lukáš Snopek ◽

Alois Adamus

Keyword(s):

Czech Republic ◽

Coal Mining ◽

Final Stage ◽

Spontaneous Combustion ◽

Development Trend ◽

Coal Spontaneous Combustion ◽

The Czech Republic ◽

Input Information ◽

Complicated Process ◽

Mine Fires

Abstract One of the most serious risks associated with mining using mainly underground methods is the risk of mine fires. Causes of these fires can be exogenous (external) or endogenous (internal). The authors of the article pay attention to endogenous fires in coal mines, especially to the timely indication of them. As already mentioned in many contributions, spontaneous combustion is a complicated process that passes, in the final stage, into a mine open fire. The localization of a place of such danger can be done by means of so-called indicator gases that are desorbed from the coal substance at a point of the originating seat of spontaneous combustion. The article deals with a development trend in the use of indicator gases for spontaneous combustion in coal mining. The objective of the authors was to arrange chronically and briefly knowledge of the use of indicator gases both abroad and in the Czech Republic and to provide input information about a research project being dealt with at present

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