• Title/Summary/Keyword: 지중배수관

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A Study on the Type of Pavement Base and Drainage in Mountain Road for the Prevention of the Pavement Damage by Uplift Water Pressure (수치해석을 활용한 산지도로의 상향침투수압으로 인한 포장파손방지를 위한 포장기층종류 및 배수형태의 고찰)

  • Lim, Young-Kyu;Yune, Chan-Young;Lee, Seung-Woo
    • International Journal of Highway Engineering
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    • v.12 no.1
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    • pp.1-8
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    • 2010
  • Construction of road closed to mountains is inevitable in Korea because the mountainous region in Korea is more than 70% in area. Recently, due to global warming, typhoons or heavy rainfalls frequently occur, and accordingly, mountain roads are seriously damaged by landslides, debris flows, and uplift pressure below pavement. in this study, damage on pavement by uplift pressure was investigated. Various influencing factors such as slope angle, reinforcement of slope surface, thickness of soil cover underlain by rock, and types of drainage system were considered to evaluate uplift pressure acting on the bottom of pavement. Raising of water table up to the surface of slope may depend on the duration and intensity of rainfall. It shows that the installation of subdrain can reduce the uplift water pressure. Therefore, It is concluded that the use of subdrain system is effective to decrease uplift pressure and cement treated base is more endurable than typical crushed-stone base.