晋西多沙粗沙区坝系建设的相关问题

Relevant Problems of Dam System Construction at More and Coarse Sand Region in the West Part of Shanxi Province

坝系是以小流域为单元 ,为充分利用水沙资源 ,在沟道中修建的以滞洪、拦泥、淤地为目的的大中小型淤地坝工程体系。坝系建设 ,就是在一条小流域内合理布局大、中、小型淤地坝工程体系 ,做到遇洪能拦 ,遇旱能灌 ,淤地能种 ,水多能排 ,防洪保收。为总结晋西多沙粗沙区坝系建设的经验教训 ,指导今后沟道坝系建设 ,在对小流域典型坝系进行综合调查的基础上 ,对坝系建设的相关问题进行了探讨。认为合理确定坝控规模、建坝密度、建设时序和大中小型淤地坝的比例 ,是保证沟道工程安全 。

In order to make full use of water and sand resources, dam system which can control the flood water, retain sand and silt up cropland, is a kind of engineering system with large, medium and small size of dams at the bottom of gully as a unit of small watershed. Dam system construction is a check dam engineering system for building cropland which can distribute reasonably large, medium and small size of dams in the small watershed, whose main purpose is to control flood when it's flooding, irrigate crops when drought, silt up cropland, drain water in the flood season, control flood and get harvest. In order to sum up the experiences and morals of the dam construction, and to direct future construction of gully and dam system, the relevant problems of dam system construction are analyzed based on the comprehensive investigation on typical cases of dam system in the small watershed. In order to ensure dam system safety, and make the best benefit from the dam system, the reasonably determining dam system scale, construct dams density, time and order, and proportion of large, medium and small check dams for building cropland should be considered.