논문 상세보기
pp.758-761
This study suggested an improvement of existing tunnel drainage system to prevent pavement crack, floating, rising due to tunnel seepage water at the time of heavy rains. First, we derive the main cause through case studies of poor drainage, such as pavement damage due to tunnel seepage water at the time of heavy rains, poor drainage in the changing sections of superelevation, and pipe clogging due to calcification. On this basis, we suggested four drainage improvement systems depending on the range of watering and its urgency, as follows: Drain hole drilling and installation of induced ditch, Pipe installation connected to collecting well, Installation of block out on the side of collecting well and filter layer, Installation of holes for maintaining dummy ditch. In conclusion, through such improvements suggested above, we expect that we will be able to effectively prevent pavement damage due to tunnel seepage water. Consequentially, it will also contribute improving the safety of vehicles in the expressway.
