Abstract
Mining-induced stress will cause the change of coal seam pore structure. However, most coal seam infusion simulation studies do not consider the change of pore with mining-induced stress. In order to study the impact of mining-induced stress on coal seam infusion, this paper used the triaxial compression test of coal as the basis to establish the relationship equation between volume strain and stress loading by the volume deformation table, and then introduced the relationship equation into FLUENT through Fluent Custom Function (UDF). Taking the mining time and water injection time as the axis, this paper compared and analyzed the variation law of coal seam infusion seepage parameters with coal seams with pore changes caused by mining-induced stress (model I) and traditional fixed porosity (model II). The results show that in the elastic deformation stage, the mining-induced stress makes the original pores of the coal seam compact, so that the water injection seepage pressure, seepage velocity, and water content volume of model I are lower than those of model II. In the plastic deformation and post-peak deformation stages, mining-induced stress promotes the development of coal seam pores, and the water injection seepage pressure, seepage velocity, and water content of model I gradually exceed the seepage field parameters of model II. It can be seen that mining-induced stress has an important impact on water injection seepage. The simulation method proposed in this paper can more truly reflect the impact of actual mining process on coal seam infusion seepage.
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References
Ambreen T, Saleem A, Park CW (2020) Analysis of hydro-thermal and entropy generation characteristics of nanofluid in an aluminium foam heat sink by employing Darcy-Forchheimer-Brinkman model coupled with multiphase Eulerian model. Appl Therm Eng 173:115231. https://doi.org/10.1016/j.applthermaleng.2020.115231
Chen Z, Wu X, Sun D, Wei Y (1995) Study on relationship between pekmeability of sandstone and hydrostatic pressure. Chin J Rock Mech Eng
Chen Z, Yang Z, Wang M (2018) Hydro-mechanical coupled mechanisms of hydraulic fracture propagation in rocks with cemented natural fractures. J Petrol Sci Eng 163:421–434. https://doi.org/10.1016/j.petrol.2017.12.092
Cheng W, Nie W, Zhou G, Yu Y, Ma Y, Xue J (2012) Research and practice on fluctuation water injection technology at low permeability coal seam. Safety Sci 50:851–856. https://doi.org/10.1016/j.ssci.2011.08.021
Guo Z, Hussain F, Cinar Y (2015) Permeability variation associated with fines production from anthracite coal during water injection. Int J Coal Geol 147–148:46–57. https://doi.org/10.1016/j.coal.2015.06.008
Han W, Zhou G, Gao D, Zhang Z, Wei Z, Wang H, Yang H (2020) Experimental analysis of the pore structure and fractal characteristics of different metamorphic coal based on mercury intrusion-nitrogen adsorption porosimetry. Powder Technol 362:386–398. https://doi.org/10.1016/j.powtec.2019.11.092
Javadi M, Sharifzadeh M, Shahriar K (2010) A new geometrical model for non-linear fluid flow through rough fractures. J Hydrol 389:18–30. https://doi.org/10.1016/j.jhydrol.2010.05.010
Jiang T, Zhang J, Wan W, Cui S, Deng D (2017) 3D transient numerical flow simulation of groundwater bypass seepage at the dam site of Dongzhuang hydro-junction. Eng Geol 231:176–189. https://doi.org/10.1016/j.enggeo.2017.10.022
Lande CK, Bansal RK, Warke A (2020) Simulation of two dimensional subsurface seepage flow in isolated anisotropic aquifer. Mater Today: Proc 23:329–337. https://doi.org/10.1016/j.matpr.2020.02.032
Li S et al (2018) Numerical simulation of spatial distributions of mining-induced stress and fracture fields for three coal mining layouts. J Rock Mech Geotech Eng 10:907–913. https://doi.org/10.1016/j.jrmge.2018.02.008
Liu R, Cheng W, Yu Y, Xu Q (2018) Human factors analysis of major coal mine accidents in China based on the HFACS-CM model and AHP method. Int J Ind Ergonom 68:270–279. https://doi.org/10.1016/j.ergon.2018.08.009
Liu Z, Yang H, Wang W, Cheng W, Xin L (2018) Experimental study on the pore structure fractals and seepage characteristics of a coal sample around a borehole in coal seam water infusion. Transport Porous Med 125:289–309. https://doi.org/10.1007/s11242-018-1119-x
Liu R, Cheng W, Yu Y, Xu Q, Jiang A, Lv T (2019) An impacting factors analysis of miners’ unsafe acts based on HFACS-CM and SEM. Process Saf Environ 122:221–231. https://doi.org/10.1016/j.psep.2018.12.007
Liu R, Yu Y, Cheng W, Xu Q, Yang H, Shen J (2020) Comparative analyses concerning triaxial compressive yield criteria of coal with the presence of pore water. Geofluids 2020:1–15. https://doi.org/10.1155/2020/4670812
Liu Q, Chai J, Chen S, Zhang D, Yuan Q, Wang S (2020) Monitoring and correction of the stress in an anchor bolt based on pulse pre-pumped Brillouin Optical Time Domain Analysis. Energy Sci Eng 8:2011–2023. https://doi.org/10.1002/ese3.644
Ma D, Duan H, Li X, Li Z, Zhou Z, Li T (2019) Effects of seepage-induced erosion on nonlinear hydraulic properties of broken red sandstones. Tunn Undergr Sp Tech 91:102993. https://doi.org/10.1016/j.tust.2019.102993
Mark C, Gale W, Oyler D, Chen J (2007) Case history of the response of a longwall entry subjected to concentrated horizontal stress. Int J Rock Mech Min 44:210–221. https://doi.org/10.1016/j.ijrmms.2006.06.005
Mckee CR, Bumb AC, Koenig RA (1988) Stress-dependent permeability and porosity of coal and other geologic formations. SPE Form Eval 3:81–91
Meng Z, Shi X, Li G (2016) Deformation, failure and permeability of coal-bearing strata during longwall mining. Eng Geol 208:69–80. https://doi.org/10.1016/j.enggeo.2016.04.029
Qian M, Xu J (1998) Study on the O shape circle distribution characteristics of mining induced fractures in the overlaying strata
Saif RS, Muhammad T, Sadia H (2020) Significance of inclined magnetic field in Darcy-Forchheimer flow with variable porosity and thermal conductivity. Physica A 551:124067. https://doi.org/10.1016/j.physa.2019.124067
Sathyanath R, Aarthi A, Kalpathy SK (2020) Liquid film entrainment during dip coating on a saturated porous substrate. Chem Eng Sci 218:115552. https://doi.org/10.1016/j.ces.2020.115552
Suchowerska AM, Merifield RS, Carter JP (2013) Vertical stress changes in multi-seam mining under supercritical longwall panels. Int J Rock Mech Min 61:306–320. https://doi.org/10.1016/j.ijrmms.2013.02.009
Vershinina KY, Egorov RI, Strizhak PA (2016) The ignition parameters of the coal-water slurry droplets at the different methods of injection into the hot oxidant flow. Appl Therm Eng 107:10–20. https://doi.org/10.1016/j.applthermaleng.2016.06.156
Wang L, Liu J, Pei J, Xu H, Bian Y (2015) Mechanical and permeability characteristics of rock under hydro-mechanical coupling conditions. Environ Earth Sci 73:5987–5996. https://doi.org/10.1007/s12665-015-4190-4
Wang P, Li Y, Liu R, Shi Y (2019a) Effects of forced-to-exhaust ratio of air volume on dust control of wall-attached swirling ventilation for mechanized excavation face. Tunn Undergr Sp Tech 90:194–207. https://doi.org/10.1016/j.tust.2019.04.026
Wang P, Tian C, Liu R, Wang J (2019b) Mathematical model for multivariate nonlinear prediction of SMD of X-type swirl pressure nozzles. Process Saf Environ 125:228–237. https://doi.org/10.1016/j.psep.2019.03.023
Wang H, Sa Z, Cheng W, Zhang R, Yang S (2021a) Effects of forced-air volume and suction region on the migration and dust suppression of air curtain during fully mechanized tunneling process. Process Saf Environ 145:222–235. https://doi.org/10.1016/j.psep.2020.08.008
Wang H, Cheng W, Sa Z, Liu J, Zhang R, Chen D (2021b) Experimental study of the effects of air volume ratios on the air curtain dust cleaning in fully mechanized working face. J Clean Prod 293:126109. https://doi.org/10.1016/j.jclepro.2021.126109
Xiao W, Zhang D, Wang X (2020) Experimental study on progressive failure process and permeability characteristics of red sandstone under seepage pressure. Eng Geol 265:105406. https://doi.org/10.1016/j.enggeo.2019.105406
Xiong X, Li B, Jiang Y, Koyama T, Zhang C (2011) Experimental and numerical study of the geometrical and hydraulic characteristics of a single rock fracture during shear. Int J Rock Mech Min 48:1292–1302. https://doi.org/10.1016/j.ijrmms.2011.09.009
Xu Q, Yu Y, Liu R, Cheng W, Yang H (2021) Study on dynamic damage characteristics of coal under alternating hydraulic pressure. B Eng Geol Environ 80:2385–2397. https://doi.org/10.1007/s10064-020-02077-2
Xue D, Zhou H, Wang C, Li D (2013) Coupling mechanism between mining-induced deformation and permeability of coal. Int J Min Sci Technol 23:783–787. https://doi.org/10.1016/j.ijmst.2013.10.001
Yang H, Yu Y, Cheng W, Rui J, Xu Q (2021) Influence of acetic acid dissolution time on evolution of coal phase and surface morphology. Fuel 286:119464. https://doi.org/10.1016/j.fuel.2020.119464
Yang W, Lin B, Qu Y, Li Z, Zhai C, Jia L, Zhao W (2011) Stress evolution with time and space during mining of a coal seam. Int J Rock Mech Min 48:1145–1152. https://doi.org/10.1016/j.ijrmms.2011.07.006
Yang Y, Yang H, Tao L, Yao J, Wang W, Zhang K, Luquot L (2019) Microscopic determination of remaining oil distribution in sandstones with different permeability scales using computed tomography scanning. J Energy Res Technol 141. https://doi.org/10.1115/1.4043131
Yin Y, Qu ZG, Zhang T, Zhang JF, Wang QQ (2020) Three-dimensional pore-scale study of methane gas mass diffusion in shale with spatially heterogeneous and anisotropic features. Fuel 273:117750. https://doi.org/10.1016/j.fuel.2020.117750
Yu Y, Yang H, Cheng W, Gao C, Zheng L, Xin Q (2021a) Effect of acetic acid concentration on functional group and microcrystalline structure of bituminous coal. Fuel 288:119711. https://doi.org/10.1016/j.fuel.2020.119711
Yu Y, Gao C, Yang H, Cheng W, Xin Q, Zhang X (2021b) Effect of acetic acid concentration and dissolution time on the evolution of coal phases: A case report of bituminous coal. J Mol Liq 340117298. https://doi.org/10.1016/j.molliq.2021.117298
Zhang J, Peng S (2005) Water inrush and environmental impact of shallow seam mining. Environ Geol 48:1068–1076. https://doi.org/10.1007/s00254-005-0045-8
Zhang J, Shen B (2004) Coal mining under aquifers in China: a case study. Int J Rock Mech Min 41:629–639. https://doi.org/10.1016/j.ijrmms.2003.01.005
Zhang J, Standifird WB, Roegiers JC, Zhang Y (2007) Stress-dependent fluid flow and permeability in fractured media: from lab experiments to engineering applications. Rock Mech Rock Eng 40:3–21
Zhang L, Qi Q, Xiong B, Zhang J (2011) Numerical simulation of 3-D seepage field in tailing pond and its practical application. Procedia Eng 12:170–176. https://doi.org/10.1016/j.proeng.2011.05.027
Zhang Z, Zhang R, Xie H, Gao M, Xie J (2016) Mining-induced coal permeability change under different mining layouts. Rock Mech Rock Eng 49:3753–3768. https://doi.org/10.1007/s00603-016-0979-z
Zhou W, Zhang P, Wu R, Hu X (2019) Dynamic monitoring the deformation and failure of extra-thick coal seam floor in deep mining. J Appl Geophys 163:132–138. https://doi.org/10.1016/j.jappgeo.2019.02.007
Funding
This work was supported by Natural Science Foundation of China (52074171, 51934004), Taishan scholar project special funding (TS20190935), and China Postdoctoral Science Foundation (2018M642681).
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Yu, Y., Xin, Q., Cheng, W. et al. Numerical simulation study on the seepage characteristics of coal seam infusion effected by mining-induced stress. Bull Eng Geol Environ 80, 9015–9028 (2021). https://doi.org/10.1007/s10064-021-02483-0
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DOI: https://doi.org/10.1007/s10064-021-02483-0