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Numerical simulation study of affecting spraying and dust reduction in deeply buried tunnels constructed by drill-and-blast method
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Yuzhu ZHOU1, 2, Dingyi WEI3, **, Weijie CAO3, Zengxiong LU3, Minglei LIN1, Xiaokun DU2
China Safety Science Journal | 2024, 34(11) : 66 - 72
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China Safety Science Journal | 2024, 34(11): 66-72
• Safety engineering technology •
Numerical simulation study of affecting spraying and dust reduction in deeply buried tunnels constructed by drill-and-blast method
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Yuzhu ZHOU1, 2, Dingyi WEI3, **, Weijie CAO3, Zengxiong LU3, Minglei LIN1, Xiaokun DU2
Affiliations
  • 1 School of Civil and Resource Engineering，University of Science and Technology Beijing，Beijing 100083，China
  • 2 Sichuan Zhuchuang Safety Technology Co.，Ltd.，Chengdu Sichuan 610040，China
  • 3 School of Resource and Safety Engineering，Henan University of Engineering，Zhengzhou Henan 451191，China
Published: 2024-11-28 doi: 10.16265/j.cnki.issn1003-3033.2024.11.1591
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Tunnel construction projects in China have developed rapidly，and significant dust hazards are associated with drilling and blasting construction. To improve the effectiveness of spraying to reduce dust in tunnels，this article uses digital simulation and a tunnel model was created using ANSYS. The variations in dust mass concentration distribution under different conditions，such as surrounding rock temperature，jet velocity，and nozzle diameter，were investigated in the study. The results show that as the surrounding rock temperature increases，dust movement becomes more intense，which significantly affects dust reduction efficiency. The dust capture effect of atomized water droplets decreases with the increase in surrounding rock temperature. With the increase of water jet velocity，the water pressure in the jet pipe increases，improving the dust capture effect of the droplets. Dust reduction efficiency decreases with increasing nozzle diameter. When the nozzle diameter is too large，the ability of water mist to capture particles weakens. Conversely，a smaller nozzle diameter improves dust reduction efficiency. However，if the nozzle diameter is too small，too much splash water spray rather than affect the efficiency of the dust.

drilling and blasting construction  /  deep buried tunnels  /  spraying to reduce dust  /  numerical simulation  /  surrounding rock temperature  /  jet velocity  /  nozzle diameter
Yuzhu ZHOU, Dingyi WEI, Weijie CAO, Zengxiong LU, Minglei LIN, Xiaokun DU. Numerical simulation study of affecting spraying and dust reduction in deeply buried tunnels constructed by drill-and-blast method[J]. China Safety Science Journal, 2024 , 34 (11) : 66 -72 . DOI: 10.16265/j.cnki.issn1003-3033.2024.11.1591
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2024.11.1591
  • Receive Date：2024-07-12
  • Online Date：2025-07-09
  • Published：2024-11-28
Article Data
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History
  • Received：2024-07-12
  • Revised：2024-09-14
Funding
Affiliations
    1 School of Civil and Resource Engineering，University of Science and Technology Beijing，Beijing 100083，China
    2 Sichuan Zhuchuang Safety Technology Co.，Ltd.，Chengdu Sichuan 610040，China
    3 School of Resource and Safety Engineering，Henan University of Engineering，Zhengzhou Henan 451191，China
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https://castjournals.cast.org.cn/joweb/zgaqkxxb/EN/10.16265/j.cnki.issn1003-3033.2024.11.1591
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表12种不同金属材料的力学参数
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Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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