Analysis of methane emissions in a tunnel excavated through Carboniferous strata based on underground coal mining experience

Rodríguez-Montañés, R.; Lombardía, Cristobal

doi:10.1016/j.tust.2010.02.010

Cited by 38 publications

(6 citation statements)

References 6 publications

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“…Agriculture activities often release harmful chemicals like pesticides and fertilizers [33]. Organic matter gradually reduces the water and oxygen in soil during flooding of rice fields; as a result, methane is produce by anaerobic decomposition [34,35]. Globally methane emission is much lower than CO 2 emissions annually.…”

Section: Agricultural Sourcesmentioning

confidence: 99%

Industrial Air Emission Pollution: Potential Sources and Sustainable Mitigation

Munsif¹,

Zubair²,

Aziz³

et al. 2021

Environmental Emissions

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Air of cities especially in the developing parts of the world is turning into a serious environmental interest. The air pollution is because of a complex interaction of dispersion and emission of toxic pollutants from manufactories. Air pollution caused due to the introduction of dust particles, gases, and smoke into the atmosphere exceeds the air quality levels. Air pollutants are the precursor of photochemical smog and acid rain that causes the asthmatic problems leading into serious illness of lung cancer, depletes the stratospheric ozone, and contributes in global warming. In the present industrial economy era, air pollution is an unavoidable product that cannot be completely removed but stern actions can reduce it. Pollution can be reduced through collective as well as individual contributions. There are multiple sources of air pollution, which are industries, fossil fuels, agro waste, and vehicular emissions. Industrial processes upgradation, energy efficiency, agricultural waste burning control, and fuel conversion are important aspects to reducing pollutants which create the industrial air pollution. Mitigations are necessary to reduce the threat of air pollution using the various applicable technologies like CO2 sequestering, industrial energy efficiency, improving the combustion processes of the vehicular engines, and reducing the gas production from agriculture cultivations.

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Section: Agricultural Sourcesmentioning

confidence: 99%

Industrial Air Emission Pollution: Potential Sources and Sustainable Mitigation

Munsif¹,

Zubair²,

Aziz³

et al. 2021

Environmental Emissions

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show abstract

“…When the value of this parameter is not known, it can be deduced from mining experience. Figure 4A,B represent the specific methane emissions in m 3 of methane per raw ton and the average methane flow in m 3 of gas per day for a typical underground mine in Asturias [26][27][28].…”

Section: Case History 1: La Camocha Collierymentioning

confidence: 99%

“…W tmin ≈ 0.25 × P T = 0.25 × 11000 = 2750 MWt (28) This is, about 3000 MWt could be extracted only from abandoned underground coal mines. The conclusion is that, as stated above, a vast geothermal potential from abandoned mines is not being exploited in Europe.…”

Section: Could the Total Geothermal Power Of Abandoned Mines In Europmentioning

confidence: 99%

Estimating Limits for the Geothermal Energy Potential of Abandoned Underground Coal Mines: A Simple Methodology

Díez

Díaz-Aguado

2014

Energies

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Flooded mine workings have good potential as low-enthalpy geothermal resources, which could be used for heating and cooling purposes, thus making use of the mines long after mining activity itself ceases. It would be useful to estimate the scale of the geothermal potential represented by abandoned and flooded underground mines in Europe. From a few practical considerations, a procedure has been developed for assessing the geothermal energy potential of abandoned underground coal mines, as well as for quantifying the reduction in CO 2 emissions associated with using the mines instead of conventional heating/cooling technologies. On this basis the authors have been able to estimate that the geothermal energy available from underground coal mines in Europe is on the order of several thousand megawatts thermal. Although this is a gross value, it can be considered a minimum, which in itself vindicates all efforts to investigate harnessing it.

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“…he rock burst trends of a roof rock-coal composite sample, a rock-coal-rock composite sample, and a coal-rock composite sample were studied (Liu et al, 2004). Besides, the characteristics of AE and electromagnetic radiation of composite samples subjected to different loads were analyzed (Rafael & Cristobal, 2010;Takeuchi et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Archives of Mining Sciences

Yin¹,

Chen²,

Chen³

et al. 2019

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Dynamic Mine d isasters can be induced by the instability and failure of a composite structure of rock and coal layers during coal mining. Coal seam contains many native defects, severely affecting the instability and failure of the compound structure. In this study, the effects of coal persistent joint on the strength and failure characteristics of coal-rock comp osite samples were evaluated using PFC2D software. The results show that with the increase of included angle α between the loading direction and joint plane direction, the uniaxial compressive stress (UCS) and peak strain of composite samples first decrease and then gradually increase. The elastic moduli of composite samples do not change obviously with α. The peak strain at α of 45° is the lowest, and the UCS at α of 30° is the smallest. This is inconsistent with theoretical analysis of lowest UCS at α of 45°. This is because that the local stress concentration caused by the motion inconformity of composite samples may increase the average axial stress of upper wall in PFC2D software. Moreover, the coal persistent joint promotes the transformation from the unstable crack expansion to the macro-instability of composite samples, especially at α of 30° and 45°. The majority of failures for composite samples occur within the coal, and no obvious damage is observed in rock. Their failure modes are shear failure crossing or along the coal persistent joint. The failure of composite sample at α of 30° is a mixed failure, including the shear failure along the persistent joint in coal and tensile failure of rock induced by the propagation of coal persistent joint.

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Analysis of methane emissions in a tunnel excavated through Carboniferous strata based on underground coal mining experience

Cited by 38 publications

References 6 publications

Industrial Air Emission Pollution: Potential Sources and Sustainable Mitigation

Industrial Air Emission Pollution: Potential Sources and Sustainable Mitigation

Estimating Limits for the Geothermal Energy Potential of Abandoned Underground Coal Mines: A Simple Methodology

Archives of Mining Sciences

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