Integral irrigation and drainage pipe system of saline-alkali soil farmland and construction method

Abstract

The invention relates to an integral irrigation and drainage pipe system of a saline-alkali soil farmland. The system is characterized in that an irrigation pipe (3) is inserted in a drainage pipe (2) to integrate a main pipe of integral farmland drainage water collection pipes and water transmission pipes; prefabricated concrete four-way anchor blocks (4) are arranged on the main pipe in a segmented manner; the other two opposite ends of the prefabricated concrete four-way anchor blocks (4) are respectively in butt joint with drainage pipes (2) of branch pipes and irrigation pipes (3) to integrate branch pipes of integral farmland drainage water collection pipe and water transmission pipe; prefabricated concrete three-way anchor blocks (6) are arranged on all the branch pipes at intervals; water supply vertical pipes (21) are arranged in water supply vertical pipe passing holes (1) of the prefabricated concrete three-way anchor blocks (6); and hydrants (5) are mounted on the water supply vertical pipes (21). The system realizes sleeving installation of two sets of pipe networks, improves the use coefficient of irrigation water, is better in drainage and dirt reduction effects, and is better in ecological and economical benefits in improvement of salinization farmlands.

Description

technical field [0001] The invention belongs to the technical field of agricultural water and soil engineering and the technical field of soil improvement, and in particular relates to an integrated irrigation and drainage pipeline system and a construction method for saline-alkali farmland. Background technique [0002] In the improvement of saline-alkali land and the construction of farmland water conservancy projects in saline-alkali land, in order to irrigate crops, irrigate salt pressure, and drain water to reduce waterlogging, it is generally necessary to bury irrigation pressure pipes and drainage hidden pipes (seepage pipes) respectively. Irrigation pipes are used for irrigation and salt pressing, and drainage pipes are used to remove groundwater and lower the excessively high water table. Irrigation pipes and drainage pipes use different pipe materials, different buried depths, different pipe diameters (drainage pipes have large diameters), and different buried dept...

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Problems solved by technology

The density of pipes in the field is high, which not only affects the cultivation, but also increases the excavation volume and land occupation of pipe trenches. During construction, the excavation of drainage pipes and ditches is deep, and it is easy to damage the existing irrigation pipes

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