Abstract
To examine the degree of the influence of width of the working face, mined depth, dip angle of the coal seam and thickness of the mined seam on the failure depth in the complete floor of the mine, we had systematically collected and analysed 61 sets of field measurement data. It is found that with the increase of width of the working face, the growth rate of floor failure depth gradually slows down. Subsequently, we comprehensively analysed the influence of four main factors on the failure depth in the complete floor of the mine by using the Deng’s grey incidence model and numerical simulation. The results showed that the mined depth and width of the working face had the greatest impact on the failure depth, while the dip angle of the coal seam and thickness of the mined seam had the least impact. At the same time, we proposed that a mined depth of 500 m below the surface was the transition point into deep mining.
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References
Chen Y, Zhu SY, Wang ZG et al (2020) Deformation and failure of floor in mine with soft coal, soft floor, hard roof and varying thicknesses of coal seam. Eng Fail Anal 115:104653
Chen Y, Zhu SY, Yang CW et al (2021) Analysis of hydrochemical evolution in main discharge aquifers under mining disturbance and water source identification. Environ Sci Pollut R 28:26784–26793
Deng JL. Basis of Grey Theory. (2002) Huazhong U Sci Technol Press (in Chinese)
Dong SN, Wang H, Zhang WZ (2019) Study on the judging criteria with utilization and grouting reconstruction of top Ordovician limestone and floor damage depth in North China coal field. J China Coal Soc 44(7):2216–2226 (in Chinese)
Duan HF. (2012) Study on mining deformation of floor and evaluation method of water inrush mining above confined aquifer. China U Min Technol (in Chinese)
Duan HF, Zhao LJ, Chen Y (2021) Effect of floor failure in fully mechanized caving of extra-thick coal seam in Datong mining area. Arab J Geosci 14:1008
Huang Z, Li SJ, Zhao K et al (2019) Estimating the hydraulic conductivity of deep fractured rock strata from high-pressure injection tests. Mine Water Environ 39:112–120
Huang Z, Zhao K, Li XZ et al (2021) Numerical characterization of groundwater flow and fracture-induced water inrush in tunnels. Tunn Undergr Sp Tech 116:104119
Liu SL, Liu WT, Shen JJ (2017) Stress evolution law and failure characteristics of mining floor rock mass above confined water. KSCE J Civ Eng 21(7):2665–2672
Liu WT, Mu DR, Xie XX et al (2018) Sensitivity analysis of the main factors controlling floor failure depth and a risk evaluation of floor water inrush for an inclined coal seam. Mine Water Environ 37(3):636–648
Liu WT, Du YH, Liu YB et al (2019) Failure characteristics of floor mining-induced damage under deep different dip angles of coal seam. Geotech Geol Eng 37(2):985–994
Meng XX, Liu WT, Mu DR (2018) Influence analysis of mining’s effect on failure characteristics of a coal seam floor with faults: a numerical simulation case study in the Zhaolou coal mine. Mine Water Environ 37(4):754–762
Meng XX, Liu WT, Zhao JY et al (2019) In situ investigation and numerical simulation of the failure depth of an inclined coal seam floor: a case study. Mine Water Environ 38:686–694
Qiang F, Jiang BS (2015) Analytical solution for stress and deformation of the mining floor based on integral transform. Int J Min Sci Technol 25(4):581–586
Shi LQ, Xu DJ, Qiu M et al (2013) Improved on the formula about the depth of failured floor in working area. J China Coal Soc 38(S2):299–303 (in Chinese)
Su PL, Wei ZF (2018) Floor failure depth of stope with medium-thickness coal seam. Geotech Geol Eng 36(2):1341–1347
Sun J, Wang LG, Zhao GM (2019) Stress distribution and failure characteristics for workface floor of a tilted coal seam. KSCE J Civ Eng 23(9):3793–3806
Wu Y, Huang Z, Zhao K et al (2020) Unsteady seepage solutions for hydraulic fracturing around vertical wellbores in hydrocarbon reservoirs. Int J Hydrogen Energ 45(16):9496–9503
Yin HY, Lefticariu L, Wei JC et al (2016) A multi-method approach for estimating the failure depth of coal seam floor in a longwall coal mine in China. Geotech Geol Eng 34(5):1267–1281
Zeng W, Huang Z, Wu Y et al (2020) Experimental investigation on mining-induced strain and failure characteristics of rock masses of mine floor. Geomat Nat Haz Risk 11(1):491–509
Zhang FD. (2016) Study on deformation failure mechanism of deep coal seam floor and evaluation method of water inrush mining above confined aquifer. China U Min Technol (in Chinese)
Zhang FD, Shen BH (2019) Failure characteristics analysis of deep coal seam floor. J Min Safety Eng 36(1):48–54 (in Chinese)
Zhang YG, Yang LN (2021) A novel dynamic predictive method of water inrush from coal floor based on gated recurrent unit model. Nat Hazards 105:2027–2043
Zhang JC, Zhang YZ, Liu TQ (1997) Rock mass seepage and water inrush from coal seam floor. Geological Publishing House, Beijing (in Chinese)
Zhang WQ, Zhao K, Zhang GB et al (2015) Prediction of floor failure depth based on grey correlation analysis theory. J China Coal Soc 40(S1):53–59 (in Chinese)
Zhou WL, Zhang PS, Wu RX et al (2019) Dynamic monitoring the deformation and failure of extra-thick coal seam floor in deep mining. J Appl Geophys 163:132–138
Zhu SY, Jiang ZQ, Hou HL et al (2008) Analytical model and application of stress distribution on mining floor of the coal seam. J China U Min Technol 18(1):13–17
Zhu SY, Jiang ZQ, Cao DT et al (2013) Restriction function of lithology and its composite structure to deformation and failure of mining coal seam floor. Nat Hazards 68(2):483–495
Zhu SY, Jiang ZQ, Zhou KJ et al (2014) The characteristics of deformation and failure of coal seam floor due to mining in Xinmi coal field in China. B Eng Geol Environ 73(4):1151–1163
Funding
This research is supported by the National Natural Science Foundation of China (Grant No. 41877229), Guangdong Basic and Applied Basic Research Foundation (2018B030311066). The authors are grateful to the anonymous reviewers for their helpful comments on the manuscript.
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Chen, Y., Tang, L. Main controlling factors to determine depth of failure zone in complete floor of coal seam based on field measurements. Arab J Geosci 15, 101 (2022). https://doi.org/10.1007/s12517-021-09098-5
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DOI: https://doi.org/10.1007/s12517-021-09098-5