黄土高原沟壑区小流域水土保持工程体系优化配置研究

A Study on Optimization on Soil and Water Conservation Engineering System in Small Watershed in Loess Plateua Gully Region

采用优化规划的方法 ,把黄土高原沟壑区小流域水土保持工程视为一个系统 ,以生态、经济效益最大为目标 ,以塬 (坡 )面和沟道之间的水沙联系为纽带 ,把塬 (坡 )面工程和沟道工程统一起来 ,建立了小流域整个工程防治体系优化配置的数学模型。在此基础上 ,以淳化县泥河沟小流域为例对工程体系结构进行了优化配置。

In the small watershed of loess plateua gully region ,all projects conserved water and soil are regarded as a system. Then, by using optimal planning method and combining the two subsystems slope engineering system and gully engineering system, which were linked by water and sands relationship between slope's and gully's,the optimal mathematical modle of the system was developed. Its goal is to dispose the projects under persuing the maximum ecological and economic benefits. Finally, the modle was used in Nihegou small watershed , Chunhua county. The comparison between the optimized results and the practical projects disposed indicates that the modle is reliable.