터널내부 소음 저감을 위한 흡음제 요구성능에 관한 연구

A Study on the Performance Requirement of Noise Absorbing Material for Railway tunnel

In general, urban railroad in Korea is constructed as a tunnel type under ground due to the various restricted conditions. Passengers in train running through underground tunnel compare to open space are exposed to severe noise environment. In this study, various performance characteristics of many candidate materials are surveyed and analyzed. And some important characteristics are tested. From this study, various performance requirement for noise reduction in railway tunnel were suggested.