小流域不同淤地坝系布局拦沙级联效应研究

摘要

In order to study the combining effects of warping dam system in small watershed and the flood sediment regulation, this paper took the warping dam system of Wangmaogou watershed as the research object, calculated the combined sediment cascade effect of different dam structures, revealed the relationship of small watershed dam system and gully dam system of sediment control by layer and slice, and clarified the cascade of small watershed sediment ability of warping dam system. The result shows that the rational allocation of the dam system can effectively prolong the service life of the key dam and the combined use of cascade dam system can realize the internal digestion of sediment.%为研究小流域淤地坝坝系的联合作用机理和蓄洪拦沙调控作用，以王茂沟小流域淤地坝系为研究对象，在系统解析小流域坝系关系的基础上，对不同坝系结构组合拦沙级联效应进行计算，揭示小流域坝系与沟道单元坝系分片、分层对泥沙的控制关系，阐明了小流域淤地坝系拦沙能力的级联效应。结果表明：小流域淤地坝系的合理配置有效延长了骨干坝的使用寿命，级联坝系的联合运用能够实现泥沙的内部消化。