摘要
基于人工制冰降温技术优点,提出了预冷风流降温技术,搭建热害矿井冰水预冷风流降温模拟测试平台,研究井下风流降温特性。结果表明:巷道通风风流与围岩、工作面进行热交换,风流温度逐步升高直至趋于稳定,且围岩、工作面温度越高,通风风流温升越高。冷风流持续与煤巷通风风流混合换热,可使煤巷通风风流温度降至煤矿安全规程要求26℃以下,且冷风流量越大,煤巷通风风流降温效果越明显。预冷风流降温技术经济、实用,对深部矿井煤巷通风风流降温具有重要实际意义。
Based on the advantages of artificial ice cooling technology, precooling airflow cooling technology is presented, and test platform of precooling airflow cooling is built to research airflow cooling characteristics in deep mining roadway. The results show that the ventilation airflow has heat exchange with surrounding rock and working face, and the airflow temperature gradually increased until it is stabilized. The higher the temperature of surrounding rock and working face is, the higher the ventilation airflow temperature is. With the mixed heat transfer of cold air and ventilation airflow in coal roadway, the temperature of ventilation airflow in coal roadway can be reduced to below 26 ℃, which is the requirement of the safety regulations of coal mine. And with the cold airflow quantity increasing, the cooling effect of ventilation airflow is more obvious.
出处
《煤炭技术》
CAS
北大核心
2017年第3期171-173,共3页
Coal Technology
基金
河南省高等学校深部矿井建设重点学科开放实验室开放基金(2013KF-01)
河南省科技攻关计划项目(142102310268)
关键词
煤矿开采
预冷风流
换热
降温
coal mining
precooling air
heat transfer
cooling
