黄土高原竹节形水平沟的断面设计

Design of Bamboo Type Contour Trench in Loess Plateau

以陕北延安黄土高原为例 ,经分析得出 :(1)黄土高原在实施竹节水平沟整地工程时 ,设计暴雨可采用 10年一遇 3h降水 6 0 mm的标准 ;(2 )每个竹节的蓄水容积不得小于 2 .5m×1.2 m× 0 .

Based on the analysis of rainfall data of Yanan city in loess plateau,the techniques for building a kind of contour trench which is alike bamboo section of trench had been put forward.Taking Yanan in the Loess Plateau as an example,the design standard of the bamboo contour trench is the rainfall intensity of 60mm/3h under rainfall frequency of once during 10 years. The volume of water harvested in a contour trench is about 2.5m×1.2m×0.35m.