Ceramic patch type subsurface drip irrigation line: Construction and hydraulic properties
Ceramic patch type subsurface drip irrigation line: Construction and hydraulic properties
复制标题
陶瓷贴片式地下滴灌线：结构和水力特性
DOI：
10.1016/j.biosystemseng.2019.03.005
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发表时间：
2019-06-01
影响因子：
5.1
通讯作者：
Lin, Li
中科院分区：
文献类型：
--
作者：
Cai, Yaohui;Zhao, Xiao;Lin, Li
在地下灌溉中，灌水器孔口可能被根部侵入堵塞。利用地下滴灌技术、多孔陶瓷成型技术和3D打印技术，研制了一种结构简单的新型陶瓷贴片式地下滴灌线（CP-SDIL）。CP-SDIL由塑料管、塑料贴片、多孔陶瓷渗水垫和橡胶防漏垫圈组成。通过改变核心部件陶瓷渗水垫的材料，可以调节CP-SDIL的流量。CP-SDIL压力-流量关系为线性关系，流区指数为1。工作压力和陶瓷材料对CP-SDIL向土壤中的排水量有显著影响。陶瓷孔隙率越高，工作压力越大，流量越大，湿润锋的移动量越大。在理论分析的基础上，利用土壤饱和区半径的参考值，推导出了CP-SDIL入土流量的计算公式。本研究结果可为CP-SDIL的推广应用提供参考。(C)2019由Elsevier Ltd代表IAgrE发布。
In subsurface irrigation, emitter orifices can become clogged by root intrusion. Using the technologies of subsurface drip irrigation, porous ceramic moulding and 3D printing, a new ceramic patch type subsurface drip irrigation line (CP-SDIL) with a simple structure was developed. The CP-SDIL consists of a plastic pipe, a plastic patch, a porous ceramic water seepage pad and a rubber leakage-proof gasket. The CP-SDIL discharge can be adjusted by changing the material of the ceramic water-seepage pad which is the core component. The CP-SDIL pressure-discharge relationship is linear, and the flow region index is one. The working pressure and the ceramic materials had a significant influence on the discharge of water from the CP-SDIL into the soil. The higher the ceramic porosity and the working pressure, the larger the discharge and the movement of the wetting front. Based on a theoretical analysis and using the reference value for the soil saturation zone radius, an equation for calculating the discharge from CP-SDIL into the soil was developed. The results of this study can be used as a reference for the promotion and application of CP-SDIL. (C) 2019 Published by Elsevier Ltd on behalf of IAgrE.