金属矿山深部掘进巷道热交换模拟测试平台设计

基于深井采矿热害控制问题,研发设计了金属矿山深部掘进巷道热交换模拟测试平台。该测试平台按照相似理论将井下掘进巷道简化为长方体硐室。利用电加热膜模拟井下各类热源,加湿器加湿模拟井下高湿环境;制冷降温装置由制冷机组、空冷器和冷风风管等构成。试验平台采用西门子300PLC系统进行实时监测以及远程操作,对工艺流程上设备运行的工况、生产流程中的工艺参数进行实时采集,并将采集的数据传送到上位操作画面,由上位机根据工艺要求,对设备、工艺过程、工艺参数进行自动控制和操作。试验平台能够在实验室内模拟井下真实热湿交换环境,模拟巷道流场、温度场及湿度场的变化规律,研究制冷降温系统的匹配优化和冷量在工作面的配送方式对降温效果的影响因素等,对于解决目前深井开采面临的问题具有很好的现实意义和推广应用价值。

Design of Metal Mine Deep Mining Roadway Thermal Exchange Simulation Test Platform

Based on thermal disaster control in deep mining,a set of metal mine deep mining roadway heat exchange simulation test platform was designed.According to the similarity theory,the underground excavation roadway is simplified into a cuboid in the test platform.All kinds of underground heat sources were simulated by electro heating film,and downhole high humidity environment were simulated by humidification with humidifier.The refrigerating unit is composed of refrigerating units,air cooler and cooling air duct.The test platform adopts Siemens 300PLC system for real-time monitoring and remote operation,and for real-time data acquisition of process parameters in operation of equipment,and production process.The data collected will be transmitted to the upper computer screen.According to the process requirements,the upper computer is used to make automatic control and operation on equipment,process,and process parameters.The test platform can simulate the real heat and moisture exchange environment in the laboratory and also simulate the change law among tunnel flow field,temperature field and humidity field.It can be used to investigate the cooling effect factor for the cooling system matching optimization and cold in the distribution.It has good practical significance and application value to solve the current problems in deep mining.