从投资和安全角度设计与优化淤地坝空间布局

Design and Optimization of Spatial Layout of Check Dam from the Perspective of Investment and Safety

淤地坝能有效拦截泥沙、保持水土,又能淤地造田,使粮食增产.基于坝系单元控制理论,借助GIS空间分析方法和计算机技术,提出了穷举法淤地坝空间布局技术,穷举坝系中每种空间布局方案,通过投资和安全评价函数对比所有布局方案,实现淤地坝在投资和安全角度的最优空间布局.将该设计与优化方法应用到张家沟子流域,验证了该设计与优化方法的可行性.

Check dam can not only effectively intercept sediment, preserve soil and water, but also silt farmland, increase grain yield. The spatial layout of check dam can directly affect the safety and investment of the project. Based on dam unit control theory, using spatial analysis method of GIS and computer technology, the method of exhaustion was presented as a spatial layout technique of check dam, which firstly listed every spatial layout scheme of the dam system, secondly compared all the layout schemes by investment and safety evaluation functions, eventually obtained the optimal spatial layout from the perspective of safety and investment. The design and optimization method was applied to Zhangjiagou sub-basin, and the results proved the mentod feasible.