Abstract
Mining activities carried out above an aquifer, especially in the hanging wall of normal faults, generally involve the risk of water inrush. For a better understanding of the mechanism inducing groundwater outburst through fault floor, the analytical and numerical simulation methods were applied to investigate the process of fault activation driven by mining and hydraulic loads. The influences of the advancing distance and fault dip were conducted. The results exhibit good agreement between the theoretical calculation and the numerical simulation. The fault activation by induced tangential stress change has a positive correlation with the advancing distance and a negative correlation with the fault dip angle. The stress concentration factor increases significantly when the excavation process enters the horizontal range of fault projection, following the stress peak and failure zone approaching the coal seam from deep to shallow along the fault. For the cases with a constant advancing distance, the smaller the fault dip is, the earlier the water-inrush channel will be formed. The research results in this study reveal the theoretical mechanism of fault activation and groundwater inrush of coal seam floor above a confined aquifer and thus provide valuable insights for the prevention and risk assessment of mine water disasters in underground engineering.
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References
Bai HB, Ma D, Chen ZQ (2013) Mechanical behavior of groundwater seepage in karst collapse pillars. Eng Geol 164:101–106. https://doi.org/10.1016/j.enggeo.2013.07.003
Bu WK, Xu H (2020) Research on the effect of dip angle on shear stress on normal fault plane and water inrush in floor strata during mining activities. Geotech Geol Eng 38:4407–4421. https://doi.org/10.1007/s10706-020-01282-w
Bukowski P (2011) Water hazard assessment in active shafts in upper Silesian coal basin mines. Mine Water Environ 30:302–311. https://doi.org/10.1007/s10230-011-0148-2
Cheng GW, Li LC, Zhu WC, Yang TH, Tang CA, Zheng Y, Wang Y (2019) Microseismic investigation of mining-induced brittle fault activation in a Chinese coal mine. Int J Rock Mech Min Sci 123:104096. https://doi.org/10.1016/j.ijrmms.2019.104096
Donnelly LJ (2006) A review of coal mining induced fault reactivation in Great Britain. Q J Eng Geol Hydrogeol 39:5–50. https://doi.org/10.1144/1470-9236/05-015
Gudmundsson A, Berg SS, Lyslo KB (2001) Skurtveit E (2001) Fracture networks and fluid transport in active fault zones. J Struct Geol 23:343–353. https://doi.org/10.1016/S0191-8141(00)00100-0
Hofmann GF, Scheepers LJ (2011) Simulating fault slip areas of mining induced seismic tremors using static boundary element numerical modelling. Min Technol 120(1):53–64. https://doi.org/10.1179/037178411X12942393517291
Hu XY, Wang LG, Lu YL (2014) Yu M (2014) Analysis of insidious fault activation and water inrush from the mining floor. Int J Min Sci Technol 24:477–483. https://doi.org/10.1016/j.ijmst.2014.05.010
Hu Y, Sun J, Liu WQ, Wei DY (2019) The evolution and prevention of water inrush due to fault activation at working face no. ii 632 in the Hengyuan coal mine. Mine Water Environ 38:93–103. https://doi.org/10.1007/s10230-018-00579-w
Huang Z, Jiang ZQ, Qian ZW, Cao DT (2014) Analytical and experimental study of water seepage propagation behavior in the fault. Acta Geodyn Geomater 11(4):361–370. https://doi.org/10.13168/AGG.2014.0017
Islam MR, Shinjo R (2009) Mining-induced fault reactivation associated with the main conveyor belt roadway and safety of the Barapukuria Coal Mine in Bangladesh: constraints from BEM simulations. Int J Coal Geol 79:115–130. https://doi.org/10.1016/j.coal.2009.06.007
Itasca Consulting Group, Inc. (2005) Fast Lagrangian Analysis of Continua in 3 dimensions, version 3.0, user’s manual. Itasca Consulting Group, Inc.
Jiang LS, Kong P, Zhang PS, Shu JM, Wang QB, Chen LJ, Wu QL (2020) Dynamic analysis of the rock burst potential of a longwall panel intersecting with a fault. Rock Mech Rock Eng 53:1737–1754. https://doi.org/10.1007/s00603-019-02004-2
Lamoreaux JW, Wu Q, Wanfang Z (2014) New development in theory and practice in mine water control in China. Carbonates Evaporites 29(2):141–145. https://doi.org/10.1007/s13146-014-0204-7
Li G, Zhou W (2006) Impact of karst water on coal mining in North China. Environ Geol 49(3):449–457. https://doi.org/10.1007/s00254-005-0102-3
Li LC, Yang TH, Liang ZZ, Zhu WC, Tang CA (2011) Numerical investigation of groundwater outbursts near faults in underground coal mines. Int J Coal Geol 85(3–4):276–288. https://doi.org/10.1016/j.coal.2010.12.006
Li SC, Wu J, Xu YWM (2019) Mechanics criterion of water inrush from the coal floor under influence of fault and its engineering application. Int J Geomech 19(5):04019022. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001387
Liang ZZ, Wu N, Li YC, Li H, Li WR (2019) Numerical study on anisotropy of the representative elementary volume of strength and deformability of jointed rock masses. Rock Mech Rock Eng 52:4387–4402. https://doi.org/10.1007/s00603-019-01859-9
Liang ZZ, Song WC, Liu WT (2020) Theoretical models for simulating the failure range and stability of inclined floor strata induced by mining and hydraulic pressure. Int J Rock Mech Min Sci 132:104382. https://doi.org/10.1016/j.ijrmms.2020.104382
Liu HL, Li LC, Li ZC, Yu GF (2018) Numerical modelling of mining-induced inrushes from subjacent water conducting karst collapse columns in northern China. Mine Water Environ 37:652–662. https://doi.org/10.1007/s10230-017-0503-z
Liu YB, Yang HZ, Liu C (2020) Study on the influence of coal face advancing distance on fault-activated water inrush. Geotech Geol Eng. https://doi.org/10.1007/s10706-020-01234-4
Lu YL, Wang LG (2015) Numerical simulation of mining-induced fracture evolution and water flow in coal seam floor above a confined aquifer. Comput Geotech 67:157–171. https://doi.org/10.1016/j.compgeo.2015.03.007
Ma D, Bai HB, Wang YM (2015) Mechanical behavior of a coal seam penetrated by a karst collapse pillar: mining-induced groundwater inrush risk. Nat Hazards 75:2137–2151. https://doi.org/10.1007/s11069-014-1416-9
Meng FZ, Zhou H, Wang ZQ, Zhang CQ, Li SJ, Zhang LM (2018) Characteristics of asperity damage and its influence on the shear behavior of granite joints. Rock Mech Rock Eng 51(2):429–449. https://doi.org/10.1007/s00603-017-1315-y
Sainoki A, Mitri HS (2018) Quantitative analysis with plastic strain indicators to estimate damage induced by fault-slip. J Rock Mech Geotech 10:1–10. https://doi.org/10.1016/j.jrmge.2017.06.001
Sainoki A, Mitri HS (2014) Dynamic behaviour of mining-induced fault slip. Int J Rock Mech Min Sci 66(1):19–29. https://doi.org/10.1016/j.ijrmms.2013.12.003
Sainoki A, Mitri HS (2016) Influence of undulating fault surface properties on its seismic waves during fault-slip. Int J Min Reclam Environ 30(1):1–12. https://doi.org/10.1080/17480930.2013.876808
Sainoki A, Mitri HS, Chinnasane D, Schwartzkopff AK (2019) Quantitative energy-based evaluation of the intensity of mining-induced seismic activity in a fractured rock mass. Rock Mech Rock Eng 52:4651–4667. https://doi.org/10.1007/s00603-019-01861-1
Shao JL, Zhou F, Sun WB (2019) Evolution model of seepage characteristics in the process of water inrush in faults. Geofluids 2019:1–14. https://doi.org/10.1155/2019/4926768
Shen MR, Chen JF (2006) Mechanics of rock masses. Tongji University Publishing House, Shanghai (in Chinese)
Shi WH, Yang TH, Liu HL, Yang B (2018) Numerical modeling of non-Darcy flow behavior of groundwater outburst through fault using the Forchheimer equation. J Hydrol Eng 23(2):04017062. https://doi.org/10.1061/(ASCE)HE.1943-5584.0001617
Shi LQ, Qiu M, Wang Y, Qu XY, Liu TH (2019) Evaluation of water inrush from underlying aquifers by using a modified water-inrush coefficient model and water-inrush index model: a case study in Feicheng coalfield, China. Hydrogeol J 27:2105–2119. https://doi.org/10.1007/s10040-019-01985-2
Sun J, Wang LG, Hu Y (2019) Mechanical criteria and sensitivity analysis of water inrush through a mining fault above confined aquifers. Arab J Geosci 12:4. https://doi.org/10.1007/s12517-018-4180-4
Wu Q, Wang M, Wu X (2004) Investigations of groundwater bursting into coal mine seam floors from fault zones. Int J Rock Mech Min Sci 41(4):557–571. https://doi.org/10.1016/j.ijrmms.2003.01.004
Wu N, Liang ZZ, Li YC, Li H, Li WR, Zhang ML (2019) Stress-dependent anisotropy index of strength and deformability of jointed rock mass: insights from a numerical study. B Eng Geol Environ 78:5905–5917. https://doi.org/10.1007/s10064-019-01483-5
Wu Q, Hao ZC, Zhao YW, Xu H (2020) Prediction of concealed faults in front of a coalface using feature learning. B Eng Geol Environ 79:4191–4204. https://doi.org/10.1007/s10064-020-01800-3
Xu ZL (2002) Concise tutorial on elasticity. Higher Education Press, Bei**g (in Chinses)
Xu JP, Liu SD, Wang B, Zhang P, Gui H (2012) Electrical monitoring criterion for water flow in faults activated by mining. Mine Water Environ 31:172–178. https://doi.org/10.1007/s10230-012-0184-6
Xue YG, Kong FM, Qiu DH, Su MX, Zhao Y, Zhang K (2021) The classifications of water and mud/rock inrush hazard: a review and update. B Eng Geol Environ 80:1907–1925. https://doi.org/10.1007/s10064-020-02012-5
Yang T, Liu HY, Tang CA (2017) Scale effect in macroscopic permeability of jointed rock mass using a coupled stress–damage–flow method. Eng Geol 228:121–136. https://doi.org/10.1016/j.enggeo.2017.07.009
Yin SX, Zhang JC, Liu DM (2015) A study of mine water inrushes by measurements of in situ stress and rock failures. Nat Hazards 79:1961–1979. https://doi.org/10.1007/s11069-015-1941-1
Zhang R, Jiang ZQ, Zhou HY, Yang CW, **ao SJ (2014) Groundwater outbursts from faults above a confined aquifer in the coal mining. Nat Hazards 71(3):1861–1872. https://doi.org/10.1007/s11069-013-0981-7
Zhang SC, Guo WJ, Li YY, Sun WB, Yin DW (2017) Experimental simulation of fault water inrush channel evolution in a coal mine floor. Mine Water Environ 36:443–451. https://doi.org/10.1007/s10230-017-0433-9
Zhu WC, Wei CH (2011) Numerical simulation on mining-induced water inrushes related to geologic structures using a damage-based hydromechanical model. Environ Earth Sci 62(1):43–54. https://doi.org/10.1007/s12665-010-0494-6
Zhu GL, Zhang WQ, Wang SL, Zhang PS (2018) Experimental research on characteristics of fault activation and confined water rising. Geotech Geol Eng 36:2625–2636. https://doi.org/10.1007/s10706-018-0487-x
Funding
This study was finally supported by the National Natural Science Foundation of China (Nos. 41977219, 51779031) and the Open Fund of State Key Laboratory of Coal Resources and Safe Mining of China (No. SKLCRSMI9KFA02).
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The research content has no conflict of interest with the mine, and the data can be used for conducting the scientific research in “Huatai Coal Mine.”
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Song, W., Liang, Z. Theoretical and numerical investigations on mining-induced fault activation and groundwater outburst of coal seam floor. Bull Eng Geol Environ 80, 5757–5768 (2021). https://doi.org/10.1007/s10064-021-02245-y
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DOI: https://doi.org/10.1007/s10064-021-02245-y