Smooth PVC tube with different envelopes as an alternative material in the subsurface drainage

Revista Brasileira de Engenharia Agrícola e Ambiental

Azevedo, Carlos A. V. de¹  Lima, Vera L. A. de¹  Almeida, Florício P. de²  Dantas Neto, José¹  Andrade, Karina de S.¹ 

[1] Universidade Federal de Campina Grande, Campina Grande;UEBA

关键词: drain;    entrance resistance;    envelope    INTRODUÇÃOEm regiões áridas e semi-áridas;    onde as precipitações são mal distribuídas no tempo e no espaço;    torna-se necessário um planejamento agrícola eficiente;    por meio do conhecimento das relações água-solo-planta-atmosfera;    para otimizar o manejo dos recursos naturais;    com destaque para o emprego adequado das técnicas de irrigação e drenagem;   

DOI  :  10.1590/S1415-43662003000100003

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

In irrigated arid and semi-arid regions the drainage is, frequently, necessary to prevent the waterlogging of the soil and to control the salinity. One of the main obstacles in the installation of a subsurface drainage system is the high cost of the initial investment. Thus, some contribution that reduces the cost of the installation of the drains and also of the material used is highly advantageous. The objective of this research was to evaluate, under laboratory conditions, the hydraulic performance of the drainage system constituted by smooth PVC tube used for sewer with 50.0 mm of nominal diameter and open area of 23.0 cm2 m-1 and different types of envelopes, as an alternative material for subsurface drainage. The performance of the smooth PVC tube demonstrated that this material is technically viable for agricultural drainage principally when used with single stones as envelope.

【 授权许可】

CC BY-NC