晋西黄土区旱井沉沙池结构形式试验设计  

Structural designs and experiments of depositional ponds in the loess region of western Shanxi Province

作　　者：段喜明[1] 冯浩[1] 吴普特[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院

出　　处：《农业工程学报》2006年第1期182-185,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家"九五"重点科技项目(96-004-05-06)第一子专题"黄土残塬区流域综合治理与有限水分高效利用技术体系的研究"的主要内容之一

摘　　要：针对旱井集雨系统中急需解决的沉沙减淤问题，考虑到研究区的具体条件，在分析沉沙池中泥沙运移规律的基础上，设计出6种简单、实用的沉沙池结构形式。通过人工降雨试验，得出在系列变雨强条件下，在以5°左右的裸露夯实黄土面（保持土面初始含水率8％～15％，干容重1.40～1．60g／cm^3）作为人工集流场时，均以第Ⅴ和第Ⅵ种沉沙池的沉沙效果较好，沉沙效率分别为89．38％和92．28％，比对照提高约20％，是一种合理的结构形式。为今后早井沉沙池的应用研究，做了有益的探讨。To solve the problem of silt deposition in depositional pond, six kinds of depositional ponds were designed in considering the material conditions of the region and the deposition dynamics of silts, their structures were simple and practical. Based on the experi ments of artificial simulation rainfall at different rainfall intensities, the allocated artificial rainwater catching is uncovered and tamped with a loess slope of about 5°, and the initial moisture content is 8%-15%, the dry soil density is 1.40-1.60 g/cm^3 at the slope surface, the best results of silt depositions are the depositional ponds of No. Ⅴ and No. Ⅵ , their efficiencies are 89.38% and 92.28%, and exceed No. I＇s by about 20%, so the structures are more rational. Ihis is a beneficial study for the practical use of depositional pond in future.

关 键 词：旱井 沉沙池 沉沙效率 结构形式 

分 类 号：S273.1[农业科学—农业水土工程] S277.4[农业科学—农业工程]