小流域淤地坝系规划中水文特征基本参数的确定研究

Basic Parameters of Planning Silt Dam System of Guang River Watershed

小流域坝系具有拦截泥沙、保持水土、改善生态环境,淤地造田、促进生产的重要作用,是小流域水土流失综合治理的有效措施。淤地坝系规划阶段水文计算的主要任务是计算设计暴雨量、设计洪水量和输沙量等重要特征参数。以某小流域坝系为例,对缺乏水文泥沙资料情况下,坝系规划中所依据的重要水文特征参数的确定作了系统分析和研究,为小流域淤地坝系的合理规划提供了科学依据。

Silt dam system of a watershed is an effective measure in comprehensive management of watershed soil erosion,which could intercept sediment,conserve water and soil,improve the ecological environment,reclaim field and boost production.In the stage of planning silt dam system,the main task of hydrological computation is to design rainstorm,design flood and sediment load and other important characteristic parameters.In the paper,taking silt dam system of Guang River Watershed as an example,the computing method of important hydrological characteristic parameters which planning silt dam system rest on are analyzed and researched systematically,while lacking of hydrologic and sediment data,and provide scientific basis for planning silt dam system of a watershed properly.