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SUN Liansheng. Study on the influence of air outlet form change of dust control air duct on dust transport in tunneling working face[J]. Safety in Coal Mines, 2023, 54(8): 45-51.
Citation: SUN Liansheng. Study on the influence of air outlet form change of dust control air duct on dust transport in tunneling working face[J]. Safety in Coal Mines, 2023, 54(8): 45-51.

Study on the influence of air outlet form change of dust control air duct on dust transport in tunneling working face

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  • Available Online: September 04, 2023
  • To study the impact of changes in the shape and quantity of dust control air duct vents on wind speed changes and dust transport in the main areas of the excavation tunnel, simulation calculations were conducted using FLUNET software for different shapes and spacing of control air vents, and corresponding cloud diagrams of wind speed and dust concentration changes were obtained for the 1.5 m high section in the tunnel and the section at different distances from the front end under corresponding conditions, as well as the wind speed and dust concentration change curves at the sampling points on the pedestrian side, verification was conducted in conjunction with the underground excavation roadway of Cuncaota Coal Mine. The research results show that under the conditions of a pressure extraction ratio of 1.2 and an axial and radial air outlet ratio of 1∶3, the dust control effect of the cylindrical control air outlet is better than that of the rectangular control air outlet and a single rectangular control air outlet. The dust concentration at the main position of the control air duct with the spacing of 750 mm is less than that at the corresponding position with the spacing of 500 mm; during the on-site verification process, under different air inlet conditions, the maximum dust reduction efficiency of the driver was 92.54%, with the dust concentration of 41.3 mg/m3. The maximum dust reduction efficiency at a distance of 5 m behind the first and second transfer points was 91.56%, with the dust concentration of 31.7 mg/m3. The dust control effect of 750 mm between the spacing of control air vents is better than that of 500mm between the spacing of control air vents, which is consistent with the numerical simulation results.
  • [1] 李德文,隋金君,刘国庆,等.中国煤矿粉尘危害防治技术现状及发展方向[J].矿业安全与环保,2019,46(6):1-7. LI Dewen, SUI Jinjun, LIU Guoqing, et al. Technical status and development direction of coal mine dust hazard prevention and control technology in China[J]. Mining Safety & Environmental Protection, 2019, 46(6): 1-7. [2] 耿凡,周福宝,罗刚.煤矿综掘工作面粉尘防治研究现状及方法进展[J].矿业安全与环保,2014,41(5):85-89. GENG Fan, ZHOU Fubao, LUO Gang. Research status and method progress of dust prevention and control technology for fully mechanized heading face in coal mine[J]. Mining Safety & Environmental Protection, 2014, 41(5): 85-89. [3] 荔军.基于附壁风筒的综掘工作面除尘技术研究进展[J].煤炭科学技术,2020,48(11):52-59. LI Jun. Research progress of dust removal technology based on wall-mounted duct in fully-mechanized driving face[J]. Coal Science and Technology, 2020, 48(11): 52-59. [4] 陈芳,张设计,马威,等.综掘工作面压风分流控除尘技术研究与应用[J].煤炭学报,2018,43(S2):483-489. CHEN Fang, ZHANG Sheji, MA Wei, et al. Research and application of the technology of forced ventilation diversion to control and reduce dust in fully mechanized excavation face[J]. Journal of China Coal Society, 2018, 43(S2): 483-489. [5] 王志宝,黄立宁,梁爱春.综掘工作面降尘效率影响因素试验研究[J].煤炭科学技术,2015,43(3):73-76. WANG Zhibao, HUANG Lining, LIANG Aichun. Experiment study on influence factors of dust fall efficiency in mine mechanized heading face[J]. Coal Science and Technology, 2015, 43(3): 73-76. [6] 乔金林,安世岗,孙连胜,等.长压短抽除尘系统不同因素变化对粉尘运移影响的模拟研究[J].煤矿机械,2021,42(9):187-191. QIAO Jinlin, AN Shigang, SUN Liansheng, et al. Simulation study on influence of different factors change on dust migration in long pressure and short suction dedusting system[J]. Coal Mine Machinery, 2021, 42(9): 187-191.[7] 王文才,李晓芳,安宁.综掘工作面长压短抽通风系统风筒合理位置研究[J].煤炭技术,2019,38(4):123-125. WANG Wencai, LI Xiaofang, AN Ning. Study on reasonable position of blower in long pressure short draft ventilation system in fully mechanized heading face[J]. Coal Technology, 2019, 38(4): 123-125. [8] 程卫民,聂文,姚玉静,等.综掘工作面旋流气幕抽吸控尘流场的数值模拟[J].煤炭学报,2011,36(8):1342-1348. CHENG Weimin, NIE Wen, YAO Yujing, et al. Numerical simulation on the flow field of swirling flow air curtain aspiration control dust in fully mechanized workface[J]. Journal of China Coal Society, 2011, 36(8): 1342-1348. [9] 陈举师,蒋仲安,谭聪.岩巷综掘工作面通风除尘系统的数值模拟[J].哈尔滨工业大学学报,2015,47(2):98-103. CHEN Jushi, JIANG Zhongan, TAN Cong. Numerical simulation of dust removal and ventilation system in the rock comprehensive tunneling face[J]. Journal of Harbin Institute of Technology, 2015, 47(2): 98-103. [10] 陆新晓,霍雨佳,韩宇,等.掘进工作面附壁风筒控尘特性研究[J].矿业科学学报,2020,5(4):401-408. LU Xinxiao, HUO Yujia, HAN Yu, et al. Research on dust control with wall attachment fan drum in the underground heading face[J]. Journal of Mining Science and Technology, 2020, 5(4): 401-408. [11] 陈芳.综掘工作面分段控风控尘技术研究与应用[J].煤炭工程,2019,51(12):106-110. CHEN Fang. Research and application of sectional airflow and dust control technology in fully mechanized tunnelling face[J]. Coal Engineering, 2019, 51(12): 106-110. [12] 杨泽安,王义亮.综掘工作面湿式除尘条件下尘雾耦合数值模拟[J].煤矿安全,2021,52(11):170-175. YANG Zean, WANG Yiliang. Numerical simulation of dustand spray coupling under wet dust removal condition in fully mechanized excavation face[J]. Safety in Coal Mines, 2021, 52(11): 170-175. [13] 郑建国,张文宇,金潮,等.岩巷综掘面长压短抽通风系统下粉尘分布规律研究[J].煤炭工程,2017,49(2):93-96. ZHENG Jianguo, ZHANG Wenyu, JIN Chao, et al. Numerical simulation of dust distribution regularities in fully mechanized rock tunneling face with far-pressing-near-absorption ventilation system[J]. Coal Engineering, 2017, 49(2): 93-96. [14] 肖峻峰,许峰,樊世星,等.大断面综掘巷道长压短抽条件下粉尘运移模拟[J].中国安全科学学报,2017, 27(2):127-132. XIAO Junfeng, XU Feng, FAN Shixing, et al. Simulation of dust diffusion in fully mechanized excavation face having large cross-section under FPNA ventilation condition[J]. China Safety Science Journal, 2017, 27(2): 127-132. [15] 施从伟.综掘工作面控风除尘技术数值模拟研究及应用[J].煤矿安全,2020,51(6):168-173. SHI Congwei. Numerical simulation research and application of air control and dust removal technology in fully mechanized driving face[J]. Safety in Coal Mines, 2020, 51(6): 168-173. [16] 牟国礼,郭英俊,李强,等.付村煤矿综掘通风除尘参数优化及风流-粉尘运移规律研究[J].中国煤炭,2020,46(6):63-68. MU Guoli, GUO Yingjun, LI Qiang, et al. Research on optimization of ventilation parameters for dust removal and airflow-dust migration-law in fully mechanized heading face of Fucun Coal Mine[J]. China Coal, 2020, 46(6): 63-68. [17] 龚晓燕,赵晓莹,杨富强,等.综掘面尘源动态变化下粉尘场优化的风流调控研究[J].煤炭工程,2021,53(2):122-126. GONG Xiaoyan, ZHAO Xiaoying, YANG Fuqiang, et al. Wind flow control for optimization of dust field distribution under dynamic change of dust source in fully mechanized heading face[J]. Coal Engineering, 2021, 53(2): 122-126. [18] 凌峰涛,杨俊磊.综掘面附壁风筒的优化设计与应用[J].煤炭技术,2021,40(3):124-127.

    LING Fengtao, YANG Junlei. Optimization design and application of wall-attached air duct in fully-mechanized excavation face[J]. Coal Technology, 2021, 40(3): 124-127.
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