Emission of fugitive dust from railway maintenance vehicles operating on gravel track

초록

The railway is using gravel to mitigate impact and noise. Since these gravel tracks are deformed due to wear and weathering, they must be replaced at regular intervals. A large amount of fugitive dust(FD) is generated during the gravel replacement work, but research on the amount of generation has not been conducted. The characteristics of FD generated from railway maintenance vehicles (RMVs) operating on gravel tracks were investi-gated. FD concentrations were measured during the operation of three types of RMV machines: the multiple tie tamper (MTT), ballast regulator (RE), and ballast cleaner (BC). The concentrations of FD generated from MTT, RE, and BC use were 10.69, 16.58, and 17.55 mg/m3, respectively. Annual FD fluxes were calculated based on FD concentrations and emission speeds as well as annual RMV operating times. The EPA AP-42 provides a formula for calculating the FD generated by cars, but this formula is not applicable to railroad vehicles. In previous FD studies, FD flux was calculated using nearby wind speeds, but in this study, we took the speed of the force each RMVs applied during maintenance work as the emission speed. The results of this study can be used as baseline data in future studies of the environmental aspects of gravel track and precast concrete slab track use.

키워드