Salt removing underground pipe for saline-alkali land

Abstract

The invention discloses a salt removing underground pipe for a saline-alkali land in the technical field of salt removal of saline-alkali lands. The salt removing underground pipe comprises a pipeline main body, wherein a water seepage layer is symmetrically arranged on upper and lower sides of the pipeline main body, and the surface of the water seepage layer is provided with water seepage holes; the surface of a dressing layer is provided with plugholes; and a water filtering device is arranged at the top of the pipeline main body. Compared with an existing salt removing underground pipe for the saline-alkali land, the salt removing underground pipe disclosed by the invention is additionally provided with the water filtering device and a water filtering wing on an original underground pipe main body, so that the contact area between soil and a pipeline body can be increased, and the water filtering area during water filtering operation is bigger; a mode that the water seepage holes in the wall of the pipeline main body, the water filtering device above the pipe main body and the water filtering wing are used for leading water into an inner cavity of the pipeline main body replaces a mode that only the water seepage holes in the pipeline main body are used for leading water into the pipeline main body in the prior art, so that the contact area between the soil and the pipeline can be increased, the salt removal efficiency is improved; and a support layer is used for supporting a filter screen and a sandstone packing layer.

Description

technical field [0001] The invention relates to the technical field of salt discharge in saline-alkali land, in particular to a salt discharge underground pipe in saline-alkali land. Background technique [0002] All kinds of saline-alkali soils are formed under certain natural conditions. The essence of their formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salt gradually accumulates on the soil surface in the salt-gathering area. Accumulated, the fundamental reason for the formation of saline-alkali soil is poor water status, so in the early stage of improvement, the focus should be on improving the water status of the soil. Generally, it is carried out in several steps. First, drain and wash salt to reduce the salinity content of the soil; then plant salt-resistant plants to fertilize the soil; finally plant crops. The specific improvement measures are: drainage, irrigation and salt washi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a saline-alkali underground salt discharge pipe to solve the problem of low salt discharge efficiency in the above-mentioned background technology

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