金属矿山井下VOD智能通风技术研究

VOD (ventilation-on-demand)智能通风从矿井风量的“供需平衡”原理出发，按需供给风量，是金属矿山经济节能的智能通风技术，实现风机远程集中监控系统风机风量的闭环控制。VOD智能通风从作业面类型分布、主要设备工作状态、作业人员工种及数量、井下空气温湿度等影响实际需风量大小的因素并通过一定的监测手段反馈到VOD智能通风控制系统并自动计算实际需风量Q_x，相应地通过风量监测技术监测通风区域“实际供风量”反馈到VOD智能通风控制系统并自动计算实际供风量Q_g，根据Q_x与Q_g的大小关系，自动调节控制风机的开停或变频调速，实现通风系统风机风量的闭环控制。同时，通过三维通风仿真模拟系统为VOD智能通风控制系统风机控制决策提供参考数据，两者结果亦可相互验证。

Study on Underground VOD Intelligent Ventilation Technology of Metal Mine

Based on the principle of “demand-supply” balance of mine air quantity，VOD (ventilation-on-demand) intelligent ventilation supplies air on demand，and it is the energy-saving intelligent ventilation technology of metal mine and can realize the closed loop control of fan and air quantity by remote centralized monitoring system.VOD intelligent ventilation analyzes the factors affecting the actual air quantity on demand from aspects of the distribution of working face′s type，the working status of main equipment，the type and number of operational staff，underground air temperature and humidity，and feed them back to the VOD intelligent ventilation control system with a certain means of monitoring.Then，the actual air quantity Q_x on demand will be automatically calculated.Accordingly，the actual air supply quantity is monitored through the air monitoring technology and feed back to the VOD intelligent ventilation control system to calculate the actual air supply quantity Q_g.According to the value of Q_x and Q_g，automatical regulation of the fan can be controlled by the start-stop or the frequency conversion to realize the closed loop control of fan and air quantity in ventilation system.At the same time，3D ventilation simulation system provides a reference for the fan control decision-making of VOD intelligent ventilation control system.Both of them can also verify with each other.