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Environmental Earth Sciences

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01-09-2016 | Original Article

Gas migration of coal in front of a mining face considering crack evolution

Authors: S. G. Cao, F. Luo, Y. B. Liu, Y. Li, P. Guo, G. D. Li

Published in: Environmental Earth Sciences | Issue 18/2016

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Abstract

The analysis of gradual mechanical responses of coal and gas migration within the coal in front of a mining face is crucial to coal and gas outburst prevention and control. In the present paper, the stress distribution of an entire stope is numerically studied by FLAC^3D. The stress state and its development within coal in front of a mining face are analyzed, and a simplified physics model is developed based on the simulation results. The crack expansion process of a coal specimen under a quasi-plane strain condition is studied using a coal solid–gas coupled meso-mechanics system that is imported into COMSOL for simulating the gas migration of coal in front of a mining face. A self-established solid–gas coupling constitutive model, which considers the gas pressure and gas adsorption, is used. The gas pressure gradient and speed of gas migration reach maximum values near the free sidewall, which is in agreement with the field test results.

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BadrulAlam AKM, Masaki Niioka, Yoshiaki Fujii, Daisuke Fukuda, Jun-ichi Kodama (2014) Effects of confining pressure on the permeability of three rock types under compression. Int J Rock Mech Min Sci 65:49–61

Cao SG (1987) Investigation on structure model of underground pressure of stope. J Chongqing Univ 2:70–78

Cao SG (1989) An investigation on the multi-arch structure of a strata around a stope. J Chongqing Univ 1:72–78

Cao SG, Liu YB, Li Y, Zhang LQ, Wang J (2009) Research and development of testing apparatus of coal solid–gas coupled meso-mechanics. Chin J Rock Mech Eng 28:1681–1689

Cao SG, Guo P, Liu YB, Zhang ZG, Li Y (2013) Development of cracks in the process of coal destruction. J China Univ Min Technol 42:725–729

Chen D, Pan ZJ, Liu JS, Connell LD (2013) An improved relative permeability model for coal reservoirs. Int J Coal Geol 109–110:45–57CrossRef

Duan Z, Davy CA, Agostini F, Jeannin L, Troadec D, Skoczylas F (2014) Gas recovery potential of Sand stones from tight gas reservoirs. Int J Rock Mech Min Sci 65:75–85

Gao BB (2010) Experimental study on evolution of cracks and permeability of mining coal. PhD thesis, Beijing Jiaotong University

Guo P, Cao SG, Zhang ZG, Li Y, Liu YB, Li Y (2012) Analysis of solid–gas coupling model and simulation of coal containing gas. J China Coal Soc 37:330–335

Hu QT, Wen GC (2013) Mechanical mechanism of coal and gas outburst. Science Press, Beijing

Li PC, Kong XY, Lu DT (2003) Mathematical modeling of flow in saturated porous media on account of fluid-structure coupling effect. Chin J Hydrodyn 18:419–426

Lin Q, Labuz JF (2013) Fracture of sandstone characterized by digital image correlation. Int J Rock Mech Min Sci 60:235–245

Liu YB (2009) Study on the deformation and damage rules of gas-filled coal base on meso-mechanical experiments. PhD thesis, Chongqing University

Liu WQ, Li YS, Wang B (2010) Gas permeability of fractured sandstone\coal samples under variable confining pressure. Transp Porous Med 83:333–347CrossRef

Luo F (2014) Study of stope gas migration regularity based on spatio-temporal difference of stress-fracture in coal-rock mass. PhD thesis, Chongqing University

Majewska Z, Majewski S, Ziętek J (2013) Swelling and acoustic emission behaviour of unconfined and confined coal during sorption of CO₂. Int J Coal Geol 116–117:17–25CrossRef

Qian MG, Shi PW (2003) Mining pressure and strata control. China University of Mining and Technology Press, Xuzhou

Richards MJ (1984) Longwall front abutment stress effects firedamp release. Min Sci Technol 1:215–229CrossRef

Vishal V, Ranjith PG, Singh TN (2013) CO2 permeability of Indian bituminous coals: implications for carbon sequestration. Int J Coal Geol 105:36–47CrossRef

Wang Z (2010) Study on new classification and induction and transforming conditions of dynamic disasters in coal mine. PhD thesis, Chongqing University

Wang Z, Hu QT, Wen GC, Sun DL (2011) Study on the distribution laws of mining pressure field and its control action on dynamic disasters in coal mines. J China Coal Soc 36:623–627

Wu SY, Zhao W (2005) Analysis of effectives in adsorbed methane-coal system. Chin J Rock Mech Eng 24:1674–1678

Xie HP, Zhou HW, Liu JF, Gao F, Zhang R, Xue DJ (2011) Mining-induced mechanical behavior in coal seams under different mining layouts. J China Coal Soc 36:1067–1074

Xu XL, Zhang N, Tian SC (2012) Mining-induced movement properties and fissure time-space evolution law in overlying strata. Int J Min Sci Technol 22:817–820CrossRef

Xue DJ, Zhou HW, Tang XL, Zhao YF (2013) Mechanism of deformation-induced damage and gas permeability enhancement of coal under typical mining layouts. Chin J Geotech Eng 35:328–336

Yin GZ, Yue S, Zhang DM, Wang H (2008) Experimental research on deformation localization of mud-sand stone in quasi-plane strain state. Rock Soil Mech 29:586–590

Yin GZ, Jiang CB, Xu J, Guo LS, Peng SJ, Li WP (2012) An experimental study on the effects of water content on coalbed gas permeability in ground stress fields. Transp Porous Med 94:87–99CrossRef

Zhang HB, Liu JS, Elsworth D (2008) How sorption-induced matrix deformation affects gas flow in coal seams: a new FE model. Int J Rock Mech Min Sci 45:1226–1236CrossRef

Zhang Y, Xu LF, Liu KM, Li YJ, Zhang B, Li WB (2012) Formation mechanism and evolution laws of gas flow channel in mining coal and rock. J China Coal Soc 37:1444–1450

Zhu WC, Liu J, Sheng JC, Elsworth D (2007) Analysis of coupled gas flow and deformation process with desorption and Klinkenberg effects in coal seams. Int J Rock Mech Min Sci 44:971–980CrossRef

Title: Gas migration of coal in front of a mining face considering crack evolution
Authors: S. G. Cao
F. Luo
Y. B. Liu
Y. Li
P. Guo
G. D. Li
Publication date: 01-09-2016
Publisher: Springer Berlin Heidelberg
Published in: Environmental Earth Sciences / Issue 18/2016
Print ISSN: 1866-6280
Electronic ISSN: 1866-6299
DOI: https://doi.org/10.1007/s12665-016-6068-5

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