Drainage System of '24-Zigs' Mountain Road

摘要

This paper aims at introducing the drainage system of the "24-zigs" mountain road, which is known as the "Lifeline of China-Anti-Japanese War" during the Second World War. To achieve this objective, 4.0 km of field data were collected from this road. Based on the topography and meteorological hydrology of the area where the "24-zigs" mountain road is located, this paper analyzed the overall operation mode of the drainage system and summarized the construction technology and design concept of this road. The results show that the drainage system of "24-zigs" mountain road is composed of several culverts and retaining walls, and all of the drainage facilities are well preserved. Additionally, the drainage system is operated by a series combination and parallel combination of the drainage channels, effectively draining water from high altitudes to low altitudes. Finally, it can be concluded that the reason why the "24-zigs" mountain road can guarantee the timely delivery of materials to the front-line during war and can be preserved so far is inseparable from its superb drainage system.