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The interface mechanical properties and breakage analysis of the flexible isolation layer under ore drawing from a single funnel

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Abstract

The interface mechanical properties and the breakage analysis of the flexible isolation layer under the condition of single funnel ore drawing is an important research topic for the theory of loose medium flow under the flexible isolation layer. To grasp the distribution characteristics and variation rules of the force system from the microscopic level and to provide a theoretical basis for the strength design of the flexible isolation layer in the new mining method, the tensile stress and the compressive stress of the isolation layer are measured using a physical experiment, and the interface mechanical properties and rupture conditions of the isolation layer are analysed. The results showed the following conclusions: (1) Horizontally, with the increase in the distance between the measuring points and the centre point in the isolation layer, the tensile stress value of the isolation layer first increased and then decreased, while the compressive stress only decreased; the friction showed a trend of decreasing first, increasing later and decreasing again. (2) Longitudinally, the tensile stress value and the compressive stress value of the isolation layer increased with an increase in the descending height, while the friction first increased and then decreased with an increase in the descending height. (3) The isolation layer in the cavity is affected by the supporting force, and the variation in the supporting force received by the isolation layer in the noncavity region is the same as the compressive stress. (4) The isolation layer is most easily broken when h = 110 cm and s = 29.863 cm.

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References

  • Abramento M, Whittle AJ (1993) Shear-lag analysis of planar soil reinforcement in plane-strain compression. J Eng Mech 119:270–291

    Article  Google Scholar 

  • Abramento M, Whittle AJ (1995) Analysis of pullout tests for planar reinforcements in soil. J Geotech Eng 121:476–485

    Article  Google Scholar 

  • Bai SL, Chen JK, Wang JX (2006) Research progress of experimental study on the mechanical behavior of the interface of particle filled/blended polymer composites. Adv Mech 36:507–516

    Google Scholar 

  • Cai ZH, Lin L, Chen XJ, Wu QL (2004) Deflection analysis of ligament between two fulcrums. Basic Sci J Text Univ 130:807–808

    Google Scholar 

  • Chen QF, Chen QL (2015) Synchronous filling mining technology idea and a kind of representative mining method. China Min Mag 24:86–88

    Google Scholar 

  • Chen QF, Su JH (2013) Synergetic mining and its technology system. J Cent South Univ 44:732–736

    Google Scholar 

  • Chen SM, Zhou HF, Meng ST (2003) Stability analysis of seawall built on soft subgrade reinforced by geotextile. Rock Soil Mech 24:661–665

    Google Scholar 

  • Chen QF, Zhou KP, Gu DS (2011) Synergetic mining and cavity synergetic utilization. China Mining Magazine 20:732–737

    Google Scholar 

  • Chen QF, Chen QL, Zhong JY (2016a) Evolution law of interface morphology of flexible isolation layer under ore drawing from single funnel[J]. Chin J Nonferrous Metals 30:236–241

    Google Scholar 

  • Chen QF, Chen QL, Zhong JY (2016b) Flow pattern of granular ore rock in a single funnel under a flexible isolation layer. Chin J Eng 38:893–898

    Google Scholar 

  • Chen QF, Chen QL, Zhong Y (2017a) Orthogonal simulation test for flowing characteristics of ore-rock and influence factor in ore drawing from multiple funnels under flexible isolation layer. Sci Sin Tech 47:923–932

    Article  Google Scholar 

  • Chen QF, Zhao FY, Chen QL, Wang YD, Zhong Y, Niu WJ (2017b) Orthogonal simulation experiment for flow characteristics of ore in ore drawing and influencing factors in a single funnel under a flexible isolation layer. JOM 69:2485–2491

    Article  Google Scholar 

  • Chen QF, Chen QL, Wang YD (2018a) Study of the movement law and tensile force character of flexible isolation layer interface in multiple funnels. J Basic Sci Eng 26:1101–1109

    Google Scholar 

  • Chen QF, Qin SK, Chen QL (2018b) Numerical simulation of ore particle flow behaviour through a single drawpoint under the influence of a flexible barrier. Geofluids 2019. https://doi.org/10.1155/2019/6127174

  • Chen QF, Zhao FY, Chen QL (2018c) Mechanical properties analysis for a flexible isolation layer material in multiple funnels synchronous ore drawing based on an indoor model experiment. Eng Mech 35:240–248

    Google Scholar 

  • Cho T, Song MK (2006) Structural reliability of a suspension bridge affected by environmentally assisted cracking. KSCE J Civ Eng 10:21–31

    Article  Google Scholar 

  • Dai XD, Wu XP, Cao XG (2014) Experimental study on the mechanism for geotextile reinforcing soft ground soil. Geotech Investig Surv:22–25

  • Finnie B, Stuart J, Gibson L (2009) Balancing environmental and industry sustainability: a case study of the US gold mining industry. J Environ Manag 90:3690–3699

    Article  Google Scholar 

  • Hou JH, Liang KH (2009) Choice of stope matting material for dry type back-filling mining method. Gold 30:33–37

    Google Scholar 

  • Hu LW (2002) Experimental study on filter geotextiles applied in Shenzhen River project. Chin J Geotech Eng 24:351–355

    Google Scholar 

  • Huang Y (1999) The large deformation of rope. Mech Eng 21:49–51

    Google Scholar 

  • Jiang TL, Chen QF, Chen QL (2018) Research on the range of physical and mechanical parameters of flexible isolation layer in synchronous filling process. Min Res Dev 38:10–15

    Google Scholar 

  • Kang YL (1999) Experimental analysis for some interfacial mechanics problems. Mech Eng 21:9–15

    Google Scholar 

  • Lee KM, Manjunath VR (2000) Experimental and numerical studies of geosynthetic-reinforced sand slopes loaded with a flooting. Can Geotech J 37:828–842

    Article  Google Scholar 

  • Qian MG (2003) Technological system and green mining concept. Coal Science and Technology Magazine 24:1–3

    Google Scholar 

  • Sobhi S, Wu JTH (1996) An interface pullout formula for extensible sheet reinforcement. Geosynth Int 3:565–582

    Article  Google Scholar 

  • Song Z, Wei W, Zhang J (2018) Numerical investigation of effect of particle shape on isolated extracted zone (IEZ) in block caving[J]. Arab J Geosci 11:310

    Article  Google Scholar 

  • Wang Z (1992) Tensile and creep properties of geotextiies and pretensioned reinforced embankment. Chinese Journal of Geotechnical Engineering 14:12–20

    Google Scholar 

  • Xin D, Liu XB (2009) Study of the ore-drawing under ore isolating layer in caving based on SLS system. Metal Mine 6:27–31

    Google Scholar 

  • Yan XM, Li XB, Li DY (2006) Determination of boundary pillar's safety thickness of open pit mining with underground goaf. Chin J Underg Space Eng 2:666–671

    Google Scholar 

  • Yin JH, Li TJ (1998) Mobilized tension force and settlement of geosynthetic reinforced foundation. Rock Soil Mech 19:20–26

    Google Scholar 

  • Zhang QL, Chen QS, Hu W (2006) Safety thickness of interval layers for the transition from open pit to underground mining. Sci Tech Rev 3:676–680

    Google Scholar 

  • Zhang X, Tao G, Zhu Z (2018) Laboratory study of the influence of dip and ore width on gravity flow during longitudinal sublevel caving[J]. Int J Rock Mech Min Sci 103:179–185

    Article  Google Scholar 

  • Zhou R (2007) Tensile behaviour of geotextile confined in granule. Ph.D. thesis, Donghua University, Shanghai, CN

  • Zhou W, Tian HQ (2013) A novel finite element model for single-layered wire strand. J Cent South Univ 20:1767–1771

    Article  Google Scholar 

Download references

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant No. 51464005).

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Authors and Affiliations

  1. College of Resources, Environment and Materials, Guangxi University, Nanning, 530004, Guangxi, People’s Republic of China

    Qingfa Chen, Linlin Meng, Shikang Qin & Qinglin Chen

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  1. Qingfa Chen
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  2. Linlin Meng
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  3. Shikang Qin
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  4. Qinglin Chen
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Correspondence to Qingfa Chen.

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Responsible Editor: Murat Karakus

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Chen, Q., Meng, L., Qin, S. et al. The interface mechanical properties and breakage analysis of the flexible isolation layer under ore drawing from a single funnel. Arab J Geosci 13, 243 (2020). https://doi.org/10.1007/s12517-020-5243-x

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