Publication Date : 2016-06-17
Author : Limin ZhangMing PengDongsheng ChangYao Xu
Disaster Management Theme :
Disaster Type : Landslide
Document Type : Research Paper
Languange : en
Link : http://onlinelibrary.wiley.com/doi/10.1002/9781118558522.ch1/summary
Dams have been an essential infrastructure in society that contributes to socioeconomic development and prosperity. Topography and geology are the two primary factors in weighing the merits of dam types. A dam project usually comprises several components, including a water-retaining structure (the dam), a water-releasing structure (the spillway), a water-conveying structure (conduits), and others (such as power plants). Landslide dams are natural dams caused by rapid deposition of landslides, debris flows, or rock-fall materials. This chapter introduces the structures of constructed embankment dams, natural landslide dams, concrete gravity dams, concrete arch dams, and dikes. Commonly constructed embankment dams can be divided into homogeneous dams, earth and rockfill dams with cores, and concrete-faced rockfill dams. A concrete arch dam is a shell structure that is curved both longitudinally and transversely. Homogeneous dikes are built in places rich in fine-grained soils, which is favorable as it has low permeability and high resistance to erosion.