【摘要】 莽山水库坝下和下游2.3 km处反调节水库坝下河段坡降和糙率都比较大。运用MIKE21软件模拟出莽山水库和反调节水库兴建后坝下河势的变化情况;采用洪水调查、莽山水库和反调节水库坝下水位流量关系曲线、坝上泄流曲线,对模型进行率定;提出合理的参数处理方法,对工程河段进行模拟。结果能够很好的反映工程情况,为工程建设提供科学依据。更多还原

【Abstract】 The river slope and roughness are large in the downstream of Mangshan Reservoir and the reregulating reservoir in 2. 3 km of its downstream reach. Here,the software MIKE21 was used to simulate the river regime changes in the downstream reach after building them. Based on the flood investigation as well as the relation curve of the downstream water level and flow and the dam discharge curve,the model was rated; Then,the feasible processing method of parameters was put forward to simulate the engineering river reach. The results could reflect the engineering situation excellently,and provide a scientific basis for the project.更多还原