矿井通风系统现状分析及优化研究

Current Situation Measurement and Regulation Optimization of Coal Mine Ventilation System

摘要: 针对某矿井通风系统中存在的进回风巷道风速过高、采区风量不足以及用风点供风紧张等突出问题，本文采用阻力测定技术，展开了一项系统性的优化研究。基于阻力测定结果，北部矿井通风困难路径的阻力值高达1736 Pa，其中回风段阻力比例占据51.8%，百米阻力达到38 Pa/hm，这构成了系统优化的核心制约因素。研究进一步揭示了局部巷道因断面收缩或堵塞导致百米阻力超标的问题，并指出北部一号回风斜井已接近通风能力极限。基于此，本文提出了投用北部二号回风斜井以分担回风压力、调整主要通风机运行工况及改善巷道断面等协同调控措施。实施结果表明，该方案能有效解决风量分配不均与风速超限问题，为复杂矿井通风系统的动态调控提供了理论依据与工程实践参考。

Abstract: To address challenges in a large-scale Coal Mine ventilation system—including excessively high air velocities in intake and return airways, insufficient airflow volume in mining areas, and constrained air supply at demand points, this paper employs resistance measurement technology for systematic optimization. According to the measurement results, the resistance value along the most challenging ventilation path in the northern mine is 1736 Pa, with the return air section accounting for 51.8% of the total resistance and exhibiting a resistance of 38 Pa/hm—a critical constraint for system optimization. The study further identifies localized high-resistance issues caused by section contractions and highlights that the No. 1 North Return Incline Shaft is nearing its capacity limit. Consequently, cooperative control measures are proposed, including commissioning the No. 2 North Return Incline Shaft to share the load, adjusting main fan operating conditions, and optimizing roadway cross-sections. The implementation demonstrates that this strategy effectively resolves airflow imbalance and velocity overruns, providing theoretical support and practical guidance for dynamic regulation of complex mine ventilation systems.