현장계측시험을 통한 고속선터널의 미기압파 방출 특성 분석

초록

Recently, many researchers are investigating on both speed-up of high-speed train and tunnel cross sectional area reduction. Micro-pressure wave, however, has to be evaluated to achieve the issues because it could make an environment problem. For this object, field measurement was conducted to obtain tunnel pressure wave and micro-pressure wave. The measured micro-pressure wave is compared between the tunnel types.The micro-pressure wave of a ballasted track tunnel was lower than that of slab track tunnel and the micro-pressure wave from a long tunnel washigher than that from a short tunnel at the slab track. Some important factors for a micro-pressure wave estimative formula were defined with the field measurement data. The micro-pressure wave estimated by the formula well corresponded with the field data.