大型矿井通风系统阻力分布特性及风量优化研究

Study on Resistance Distribution Characteristics and Air Volume Optimization of Ventilation System in a Large-Scale Coal Mine

摘要: 为解决某大型矿井通风系统阻力分布不均、风量利用率偏低及局部微风等问题，提升通风系统经济性与安全性，本文以某大型矿井为研究对象，通过现场实测获取各通风系统阻力、风量等核心参数，结合通风网络模拟平台开展阻力分布特性分析，识别高阻力巷段与风量分配缺陷，提出针对性风量优化方案。研究表明：该矿井3个回风系统阻力主要集中于回风段，占比达54%~74.1%；部分巷段存在微风现象，风量利用率仅35%~45%；针对性优化方案可有效改善上述问题，为大型矿井通风系统优化提供了理论与工程参考。

Abstract: To address the problems of uneven resistance distribution, low air volume utilization rate, and local weak airflow in the ventilation system of a large-scale coal mine, and to improve the economy and safety of the ventilation system, a large-scale coal mine was selected as the research object in this paper. Core parameters such as resistance and air volume of each ventilation system were obtained through on-site field measurements. Combined with a ventilation network simulation platform, an analysis of resistance distribution characteristics was conducted to identify high-resistance roadway sections and air volume allocation defects, and targeted air volume optimization schemes were proposed. The research results indicate that the resistance of the three return air systems in the mine is mainly concentrated in the return air section, accounting for 54%~74.1%; weak airflow occurs in some roadway sections, with the air volume utilization rate only ranging from 35% to 45%; the targeted optimization schemes can effectively alleviate the aforementioned problems, providing theoretical and engineering references for the optimization of ventilation systems in large-scale coal mines.