“多维立体排水”技术在渍水农田治理中的应用

高云华; 陈  颖; 杨燕云; 李  沙; 郑宏刚

引用本文:	高云华,陈颖,杨燕云,等.“多维立体排水”技术在渍水农田治理中的应用[J].灌溉排水学报,2018,37(5):86-91.
	GAO Yunhua,CHEN Ying,YANG Yanyun,et al.“多维立体排水”技术在渍水农田治理中的应用[J].灌溉排水学报,2018,37(5):86-91.

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“多维立体排水”技术在渍水农田治理中的应用
高云华，陈颖，杨燕云，李沙，郑宏刚
云南农业大学水利学院，昆明 650201；云南农业大学国土资源科学技术工程研究中心，昆明 650201；云南农业大学国有资产管理处，昆明 650201

摘要:

【目的】解决地势低洼地区田间排水不畅的问题。【方法】提出了对低洼农田土体进行重构，自下而上构建透水层、过滤层、客土层，替换原来土质黏重的土体，设置透水沟壁与客土区透水层相连的“多维立体排水”技术。基于渗透原理，对重构前土体、重构后土体及排水沟透水沟壁的渗透性能进行了分析计算。【结果】应用“多维立体排水”技术后土层渗流量由原来的5.50×10-8～1.60×10-7 m3/s提高到1.10×10-5～3.20×10-5 m3/s，农沟侧壁渗透量为8.89×10-3～3.56×10-2 m3/s，大于透水层渗透量1.10×10-5～3.20×10-5 m3/s。【结论】“多维立体排水”技术通过重构土体提高土体的通透性，田间地表水及地下水能够通过透水层及农沟侧壁透水通道快速排除。

关键词: 渍水农田；渗流；客土；排涝沟

DOI：10.13522/j.cnki.ggps.2017.0548

分类号:

基金项目:

A “Multi Dimensional Drainage” System and Its Application in Management of Waterlogging in Lowland Farmlands

GAO Yunhua, CHEN Ying, YANG Yanyun, LI Sha, ZHENG Honggang

College of Hydraulic Engineering，Yunnan Agricultural University， Kunming 650201, China； Engineering Research Center of Science and Technology of Land and Resources， Yunnan Agricultural University，Kunming 650201, China； Owned Assets Management Office of Yunnan Agricultural University， Kunming 650201, China

Abstract:

【Objective】 Waterlogging is a challenge facing lowland farmlands and the purpose of this paper is to present an alternative method to tackle this problem. 【Method】 We proposed to reconstruct the lowland farmland by replacing its top sticky soil by a new composite consisting of a permeable layer, a filter layer and a guest soil, counted from the bottom to the surface. In the meantime, drainage channels were constructed on the wall of the drainage ditch connected to the permeable layer. Based on the permeability of all materials and the soil, we calculated the performance of the drainage system before and after the top soil-replacement. 【Result】 The seepage flow from the soil layer after the replacement increased from 5.50×10-8～1.60×10-7 m3/s to 1.10×10-5～3.20×10-5 m3/s, and the draining rate from the channel increased to 8.89×10-3～3.56×10-2 m3/s, higher than the percolating rate of 1.10×10-5～3.20×10-5 m3/s at the permeable soil. 【Conclusion】 The “Multi-dimensional Drainage” system can improve soil permeability and drainage efficacy, thereby offering a potential technology to alleviate waterlogging in lowland farmlands.

Key words: waterlogging farmland; seepage; soil dressing; drainage ditch