Environmental Science and Pollution Research

, Volume 26, Issue 10, pp 10023–10036 | Cite as

Experimental characterization of multi-nozzle atomization interference for dust reduction between hydraulic supports at a fully mechanized coal mining face

  • Jiayuan Wang
  • Gang ZhouEmail author
  • Xing Wei
  • Shicong Wang
Research Article


To analyze the distribution pattern concerning multi-nozzle interference spray particle granularity between hydraulic supports, the present study conducts atomization interference experimental characterization for three types of nozzles used in coal mines based on a Doppler laser interference spray dust suppression simulation experimental system. The results indicate that for single-nozzle atomization, the impact of spray pressure on spray droplet size is gradually subdued, and a spray pressure of 8 MPa yields the best result; compared with single-nozzle spray, the multi-nozzle atomization interference effect can downsize the spray field overlapping zone, leading to an improved uniformity of overall spray particle distribution. As the spray field overlapping coefficient k increases, the particle size of the interference spray field decreases first and then increases. As the spray field overlapping coefficient reaches 0.4, the distribution of spray droplet size is most concentrated, corresponding to the optimal atomized dust suppression effect. Practical testing indicates that the optimal spray field overlapping coefficient measured at a fully mechanized mining face agrees well with the experimental result. Under the optimal parameters, the average total dust and respirable dust suppression rates measured at various measuring points on the downwind side during support relocation reach 78.93% and 80.53%, respectively.


Hydraulic support Multi-nozzle Atomization interference Spray field overlapping coefficient Spray droplet size 


Funding information

This work was financially supported by the National Key Research and Development Program of China (Grant No. 2017YFC0805202), the National Natural Science Foundation of China (Grant Nos. 51774198, 51474139), the Outstanding Youth Fund Project of Provincial Universities in Shandong Province (Grant No. ZR2017JL026), the Qingdao City Science and Technology Project (Grant No. 16-6-2-52-nsh), the Natural Science Foundation of Shandong Province (Grant No. ZR2016EEM36), and the Qingdao Postdoctoral Applied Research Project (Grant No. 2015194).


  1. Arcoumanis C, Gavaises M (1998) Linking nozzle flow with spray characteristics in a diesel fuel injection system. Atomization Sprays 8:307–347CrossRefGoogle Scholar
  2. Bianchi GM, Pelloni P, Corcione FE (2001) Modeling atomization of high-pressure diesel sprays. J Eng Gas Turbines Power 123:419–427CrossRefGoogle Scholar
  3. Candra KJ, Pulung SA, Sadashiv MA (2014) Dust dispersion and management in underground mining faces. Int J Min Sci Technol 24:39–44CrossRefGoogle Scholar
  4. Chen X (2015) Numerical and experimental study on spray characteristics with effect of induced airflow on transshipment point. J China Coal Soc 40:603–608Google Scholar
  5. Chen LJ, Li PC, Liu GM, Cheng WM, Liu ZX (2018) Development of cement dust suppression technology during shotcrete in mine of China-a review. J Loss Prev Process Ind 55:232–242CrossRefGoogle Scholar
  6. Cheng WM, Zhou G, Zuo QM, Nie W, Wang G (2010) Experimental research on the relationship between nozzle spray pressure and atomization particle size. J China Coal Soc 35:1308–1313Google Scholar
  7. Cheng WM, Hu XM, Xie J, Zhao YY (2017). An intelligent gel designed to control the spontaneous combustion of coal: Fire prevention and extinguishing properties. Fuel 210:826-835Google Scholar
  8. Cousin J, Nuglisch HJ (2001) Modeling of internal flow in high pressure swirl injectors. SAE Trans Techn Paper 110:806–814Google Scholar
  9. Dodge LG (1984) Change of calibration of diffraction-based particle suers in dense sprays. Opt Eng 23:626–630CrossRefGoogle Scholar
  10. Fan T, Zhou G, Wang JY (2018) Preparation and characterization of a wetting-agglomeration-based hybrid coal dust suppressant. Process Saf Environ Prot 113:282–291CrossRefGoogle Scholar
  11. Geng F, Luo G, Zhou FB, Zhao PT, Ma L, Chai HL, Zhang TT (2017) Numerical investigation of dust dispersion in a coal roadway with hybrid ventilation system. Powder Technol 313:260–271CrossRefGoogle Scholar
  12. George KV, Patil DD, Alaooat BJ (2013) PM10 in the ambient air of Chandrapur coal mine and its comparison with other environments. Environ Monit Assess 185:1117–1128CrossRefGoogle Scholar
  13. Govindaraj M, Kushal DG, Muralidhara SR (2018) Experimental study of spray breakup phenomena in small scale simplex atomizers with and without air swirl. Atomization Sprays 28:299–320CrossRefGoogle Scholar
  14. Han FW, Wang DM, Jiang JX, Zhu XL (2014) Modeling the influence of forced ventilation on the dispersion of droplets ejected from road header-mounted external sprayer. Int J Min Sci Technol 24:129–135CrossRefGoogle Scholar
  15. Han L, Han RH, Ji XM, Wang T, Yang JJ, Yuan JL, Wu QY, Zhu BL, Zhang HD, Ding BM, Ni CH (2015) Prevalence characteristics of coal workers’ pneumoconiosis (CWP) in a state-owned mine in Eastern China. Int J Environ Res Public Health 12:7856–7867CrossRefGoogle Scholar
  16. He ZX, Tao XC, Zhong WJ, Leng XY, Wang Q, Zhao P (2015) Experimental and numerical study of cavitation inception phenomenon in diesel injector nozzles. Int Commun. Heat Mass Transfer 65:117–124CrossRefGoogle Scholar
  17. Hu ZX, Hu XM, Cheng WM, Zhao YY, Wu MY (2018) Performance optimization of one-component polyurethane healing agent for self-healing concrete. Constr Build Mater 179:151-159Google Scholar
  18. Jia WD, Li PP, Qiu BJ, Fu XM, Xue XY (2008) Experimental investigation of droplet diameter and velocity distributions in agricultural electrostatic sprays. Trans CSAE 24:17–21Google Scholar
  19. Jiang ZA, Jiang L, Chen JS (2014) Experimental study on foam dust suppression during down-the-hole drilling in open-pit mine. J China Coal Soc 39:903–907Google Scholar
  20. Kong B, Li ZH, Wang EY, Lu W, Chen L, Qi GS (2018a) An experimental study for characterization the process of coal oxidation and spontaneous combustion by electromagnetic radiation technique. Process Saf Environ Prot 119:285–294CrossRefGoogle Scholar
  21. Kong B, Wang EY, Li ZH (2018b) The effect of high temperature environment on rock properties - an example of electromagnetic radiation characterization. Environ Sci Pollut Res 25:29104–29114CrossRefGoogle Scholar
  22. Lee DK (2011) A computational flow analysis for choosing the diameter and position of an air duct in a working face. J Min Sci 47:664–674CrossRefGoogle Scholar
  23. Lee CS, Park SW (2002) An experimental and numerical study on fuel atomization characteristics of high pressure diesel injection sprays. Fuel 81:2417–2423CrossRefGoogle Scholar
  24. Liu GM, Cheng WM, Chen LJ (2017) Investigating and optimizing the mix proportion of pumping wet-mix shotcrete with polypropylene fiber. Constr Build Mater 150:14–23Google Scholar
  25. Liu Z, Yang H, Wang W, Cheng WM, 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 125:289-309Google Scholar
  26. Liu J, Zhang R, Song DZ, Wang ZQ (2019a) Experimental investigation on occurrence of gassy coal extrusion in coalmine. Safety Sci 113:362-371Google Scholar
  27. Liu Q, Nie W, Hua Y, Peng HT, Liu CQ, Wei CH (2019b) Research on tunnel ventilation systems: dust diffusion and pollution behaviour by air curtains based on CFD technology and field measurement. Build Environ 147:444-460Google Scholar
  28. Magesh T, Yi ZG, Tien JC (2016) DPM simulation in an underground entry: comparison between particle and species models. Int J Min Sci Technol 26:487–494CrossRefGoogle Scholar
  29. Ni GH, Li Z, Xie HC (2018a) The mechanism and relief method of the coal seam water blocking effect (WBE) based on the surfactants. Powder Technol 323:60–68CrossRefGoogle Scholar
  30. Ni GH, Xie HC, Li Z, Zhuansun LX, Niu YY (2018b) Improving the permeability of coal seam with pulsating hydraulic fracturing technique: a case study in Changping coal mine, China. Process Saf Environ Prot 117:565–572CrossRefGoogle Scholar
  31. Ni GH, Dong K, Li S, Sun Q (2019) Gas desorption characteristics effected by the pulsating hydraulic fracturing in coal. Fuel 236:190–200CrossRefGoogle Scholar
  32. Nie BS, Li XC, Yang T, Hu WX, Guo JH (2013) Distribution of PM2.5 dust during mining operation in coal workface. J China Coal Soc 38:33–37Google Scholar
  33. Nie W, Ma X, Cheng WM, Liu YH, Xin L, Peng HT, Wei WL (2016) A novel spraying/negative-pressure secondary dust suppression device used in fully mechanized mining face: a case study. Process Saf Environ Prot 103:126–135CrossRefGoogle Scholar
  34. Park J, Jo Y, Park G (2018) Flow characteristics of fresh air discharged from a ventilation duct for mine ventilation. J Mech Sci Technol 32:1187–1194CrossRefGoogle Scholar
  35. Pfeifer C, Bruzzese C, Fast G, Kuhn D, Class AG (2011) Application of the tomographic laser doppler anemometry (TDLA) to a fuel spray. Flow Meas Instrum 22:456–460CrossRefGoogle Scholar
  36. Prostanski D (2013) Use of air-water spraying systems for improving dust control in mines. J Sustain Min 12:29–34CrossRefGoogle Scholar
  37. Sobolev VS, Kashcheeva GA (2017) Potential accuracy of methods of laser Doppler anemometry in the single-particle scattering mode. Optoelectronics, Instrumentation and Data Processing 53:264–270CrossRefGoogle Scholar
  38. Sun B, Cheng WM, Wang JY, Wang H (2018) Effects of turbulent airflow from coal cutting on pollution characteristics of coal dust in fully-mechanized mining face: a case study. J Clean Prod 201:308–324CrossRefGoogle Scholar
  39. Wang XB, Gao J, Jiang DM, Huang ZH, Chen WS (2006) Experimental research and numerical simulation of high-pressure swirl injection using methanol and ethanol. Trans CSICE 24:1–7Google Scholar
  40. Wang QG, Wang DM, Wang HT, Han FW, Zhu XL, Tang Y, Si WB (2015) Optimization and implementation of a foam system to suppress dust in coal mine excavation face. Process Saf Environ Prot 96:184–190CrossRefGoogle Scholar
  41. Wang G, Wu MM, Wang R, Xu H, Song X (2017) Height of the mining-induced fractured zone above a coal face. Eng Geol 216:140–152CrossRefGoogle Scholar
  42. Wang P, Jiang LS, Jiang JQ, Zheng PQ, Li W (2018a) Strata behaviors and rock burst–inducing mechanism under the coupling effect of a hard, thick stratum and a normal fault. Int J Geosci 18:04017135Google Scholar
  43. Wang H, Nie W, Cheng WM, Liu Q, Jin H (2018b) Effects of air volume ratio parameters on air curtain dust suppression in a rock tunnel’s fully-mechanized working face. Adv Powder Technol 29:230–244CrossRefGoogle Scholar
  44. Wigley G, Goodwin M, Pitcher G, Blondel D (2014) Imaging and PDA analysis of a GDI spray in the near-nozzle region. Exp Fluids 36:565–574CrossRefGoogle Scholar
  45. Wild PN, Swithenbank J (1986) Beam stop and vignetting effects in particle size measurements by laser diffraction. Appl Opt 25:3520–3526CrossRefGoogle Scholar
  46. Witt PJ, Carey KG, Nguyen TV (2002) Prediction of dust loss from conveyors using computational fluid dynamics modeling. Appl Math Model 26:297–309CrossRefGoogle Scholar
  47. Yang SB, Nie W, Lv SS, Liu ZQ, Peng HT, Ma X, Cai P, Xu CW (2019) Effects of spraying pressure and installation angle of nozzles on atomization characteristics of external spraying system at a fully-mechanized mining face. Powder Technol 343:754-764Google Scholar
  48. Yu HM, Cheng WM, Peng HT, Xie Y (2018) An investigation of the nozzle’s atomization dust suppression rules in a fully-mechanized excavation face based on the airflow-droplet-dust three-phase coupling model. Adv Powder Technol 29:941–956CrossRefGoogle Scholar
  49. Zhang Q, Zhou G, Qian XM, Yuan MQ, Sun YL, Wang D (2018) Diffuse pollution characteristics of respirable dust in fully-mechanized mining face under various velocities based on CFD investigation. J Clean Prod 184:239–250CrossRefGoogle Scholar
  50. Zheng YP, Feng CG, Jing GX, Qian XM, Li XJ, Liu Z, Huang P (2009) A statistical analysis of coal mine accidents caused by coal dust explosions in China. J Loss Prev Process Ind 22:528–532CrossRefGoogle Scholar
  51. Zhou G, Cheng WM, Wang G, Cui XF (2010) Experiment research of the coupling relationship between dust field and droplet field about fully mechanized and roof caving workface. J China Coal Soc 35:1660–1664Google Scholar
  52. Zhou G, Nie W, Cheng WM, Wang H (2014) Influence regulations analysis of high-pressure atomization dust-settling to dust particle’s microscopic parameters in fully mechanized caving coal face. J China Coal Soc 39:2053–2059Google Scholar
  53. Zhou G, Zhang Q, Bai RN, Ni GH (2016) Characterization of coal micro-pore structure and simulation on the seepage rules of low-pressure water based on CT scanning data. Minerals 6:78CrossRefGoogle Scholar
  54. Zhou G, Fan T, Ma YL (2017a) Preparation and chemical characterization of an environmentally-friendly coal dust cementing agent. J Chem Technol Biotechnol 92:2699–2708CrossRefGoogle Scholar
  55. Zhou G, Xu M, Qiu H, Nie W, Cheng WM, Chen C (2017b) Experimental investigation about the influence of airflow on droplet sizes of mechanical nozzles for coal mining face. Tehnički Vjesnik-Tehnical Gazette 24:1713–1721Google Scholar
  56. Zhou G, Zhang Q, Bai RN, Fan T, Wang G (2017c) The diffusion behavior law of respirable dust at fully mechanized mining face in coal mine: CFD numerical simulation and engineering application. Process Saf Environ Prot 106:117–128CrossRefGoogle Scholar
  57. Zhou G, Fan T, Xu M, Qiu H, Wang JY, Qiu L (2018a) The development and characterization of a novel coagulant for dust suppression in open-cast coal mines. Adsorpt Sci Technol 36:608–624CrossRefGoogle Scholar
  58. Zhou G, Ma YL, Fan T, Wang G (2018b) Preparation and characteristics of a multifunctional dust suppressant with agglomeration and wettability performance used in coal mine. Chem Eng Res Des 132:729–742CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Jiayuan Wang
    • 1
    • 2
  • Gang Zhou
    • 1
    • 2
    Email author
  • Xing Wei
    • 1
    • 2
  • Shicong Wang
    • 1
    • 2
  1. 1.College of Mining and Safety EngineeringShandong University of Science and TechnologyQingdaoChina
  2. 2.State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and TechnologyShandong University of Science and TechnologyQingdaoChina

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