掘锚一体机快速掘巷期间粉尘防控装置设计

Design of Dust Prevention and Control Device during Rapid Tunnel Excavation with Anchor Excavator

  • 摘要: 针对2204胶带巷掘锚一体机快速掘进作业中产尘量大、粉尘污染突出的难题,该文结合该巷道现场掘进工况,剖析掘进迎头区域的主要产尘源头;遵循 “抑、控、除、净” 一体化粉尘治理思路,从喷雾降尘系统、掘锚一体机机载控除尘装置、风流净化机械设备多维度开展综合优化,并完成现场工业性应用试验。结果表明:经综合应用上述除尘措施后,掘锚一体机回风侧5 m处的呼吸性粉尘的降尘效率为86.5%,总粉尘降尘效率为90.6%;风流净化机械装置后方5 m处的呼吸性粉尘降尘效率为97.3%,总粉尘降尘效率为97.7%,有效降低了掘进工作面粉尘量,改善了掘进环境,达到了较好的应用效果。

     

    Abstract: Based on the problems of high dust generation and severe dust pollution during the rapid excavation of the 2204 belt roadway using an excavating and anchoring integrated machine, this paper analyzes the main dust sources in the heading face area under the excavation conditions of the 2204 belt roadway. Adopting the dust prevention and control concept of “suppression, control, removal, and purification”, the spray dust suppression system, the onboard dust control and removal system of the excavating and anchoring integrated machine, as well as mechanical devices for airflow purification, were comprehensively optimized from multiple aspects. Subsequently, industrial application tests were carried out. The results showed that after the comprehensive application of the above dust removal measures, the dust reduction efficiency of respirable dust at 5 m from the return air side of the all-in-one machine for digging and anchoring was 86.5%, and the total dust reduction efficiency was 90.6%; The respiratory dust reduction efficiency at a distance of 5 meters behind the airflow purification mechanical device is 97.3%, and the total dust reduction efficiency is 97.7%, effectively reducing the amount of flour dust in the excavation work, improving the excavation environment, and achieving good application effects.

     

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