论上盖车辆段大型通风系统降噪技术的应用与研究

Application and Research of Noise Reduction Technology for Large Ventilation System of Upper Vehicle Depot

地铁轨道交通已成为目前我国一二线城市民居出行的主要方式,据统计,北上广深等发达城市今后十年规划的地铁线路已达上百条。逐渐增多的地铁网络和日益扩大的城市人口已成为城市发展尖锐矛盾。因此,地铁上盖物业已成为我国大部分城市对土地利用开发的重要手段,随着而来的是各种噪音的产生,如地铁车辆的振动噪音、车辆段大型通风设备的风机噪音等,严重影响到周边居民的生活水平。如何使通风系统的噪声降低到符合国家环保要求,采取既简单又经济的方法对大型通风系统的噪声加以治理,已成为上盖车辆段所面临的新问题。本文结合广州上盖萝岗车辆段工程实例,针对上盖车辆段检修库15#风机为噪声治理样机,对所采用的特殊降噪技术进行详细的论述与研究,以此期望能为以后同类上盖车辆段大型通风系统的降噪做出借鉴或推广作用。

Metro rail transit has become the main mode of residential travel in the first and second-line cities in China.According to statistics,there are more than 100 metro lines planned for the next ten years in developed cities such as Beijing,Guangzhou,Shenzhen,.Increasing subway network and expanding urban population have become a sharp contradiction in urban development.Therefore,the Metro overhead property has become an important means of land use development in most cities of our country.Along with it,various noises,such as the vibration and noise of Metro vehicles,the fan noise of large ventilation equipment in depots,have seriously affected the living standards of the surrounding residents.How to reduce the noise of ventilation system to meet the national environmental protection requirements and adopt a simple and economical method to control the noise of large ventilation system has become a new problem faced by the upper depot.based on the engineering example of Luogang depot in Shanggai,Guangzhou,and aiming at the 15#fan in the overhaul depot as the noise control prototype,the special noise reduction technology adopted is discussed and studied in detail.