【摘要】 针对淮南矿区煤矿传统巷道工程存在的掘进成本高、周期长等问题，开展了以孔代巷技术研究。提出了通过大直径钻孔代替部分巷道功能，利用定向钻孔轨迹精准可控、可沿目标地层长距离延伸的优势，从而降低掘进成本、提高施工效率、减少风险。基于Fluent数值仿真软件，并选用Realizable k-ε湍流模型和离散相模型（DPM），分析3种工况下巷道内的空气流场和粉尘运移的区别。结果表明：3种工况下工作面的通风量均可达到600m~3/min以上且巷道内平均风速均超过0.25m/s，满足淮南矿区掘进工作面的需风量。当钻孔位于工作面时，增设局部通风机可以提高掘进工作面排尘速度，粉尘停留时间缩短10s左右；当钻孔位于顶板时，通风和排尘效率最佳，平均风速达到0.50m/s，粉尘停留时间在30～75s之间。更多还原

【Abstract】 To address the issues of high excavation costs and long cycles in traditional roadway engineering in the Huainan mining area,this paper conducts research on borehole-for-roadway technology.It proposes replacing part of the roadway functions with large-diameter drill holes,utilizing the advantages of accurately controllable directional drilling trajectories that can extend long distances along target strata,thereby reducing excavation costs,improving construction efficiency,and minimizing risks.Based on Fluent numerical simulation software,and using the Realizable k-εmodel and the Discrete Phase Model(DPM),the differences in airflow and dust transport within the roadway under three operating conditions were analyzed.The results show that,under all three conditions,the ventilation volume at the working face can reach over 600 m~3/min,and the average airflow speed in the roadway exceeds 0.25m/s,meeting the required airflow for excavation working faces in the Huainan mining area.When the drill hole is located at the working face,adding a local ventilator can increase dust removal speed,reducing the dust residence time by about 10 seconds;when the drill hole is located at the roof,ventilation and dust removal efficiency are optimal,with an average airflow speed of 0.5m/s and dust residence time ranging between 30～75 seconds.更多还原