Underground pipe with long service life and good drainage properties and used for saline-alkali land

Abstract

The invention discloses an underground pipe with long service life and good drainage properties and used for a saline-alkali land, belonging to the technical field of pipelines. The underground pipe comprises an underground pipe body, wherein the outer wall of the underground pipe body is in sleeve connection with an asbestos layer; the outer wall of the asbestos layer is in sleeve connection with a steel wire mesh layer; the outer wall of the steel wire mesh layer is in sleeve connection with an anti-wear layer; and the outer wall of the anti-wear layer is in sleeve connection with an antioxidation layer. The underground pipe provided by the invention has the advantages of simple and compact structure, convenient use, reasonable design, low manufacturing cost, durability in use, long service life and good drainage properties; the anti-wear layer and the antioxidation layer are arranged, so wear resistance and antioxidation properties of a pipeline are improved; a corrosion-resisting coating layer is arranged on the surface of the pipeline, so the durability of the pipeline is increased, and the pipeline has strong corrosion resistance; a plurality of groups of overflow holes are uniformly arranged on a branch pipe, and a sand and gravel filling layer, a nonwoven water-permeable layer, a dressing layer and a coarse sand layer are arranged on the surface, so silt in the saline-alkali land can be effectively hindered from entering the underground pipe, and clogging of the overflow holes can be prevented.

Description

technical field [0001] The invention relates to the technical field of pipelines, in particular to an underground pipeline for saline-alkali ground with long service life and good drainage. Background technique [0002] At present, the dwindling of arable land has become a worldwide problem. It is a good choice to develop coastal tidal flats and inland saline-alkali lands and make full use of existing resources. The area of ​​cultivated land in our country is limited, and there are more than 8 million mu of various types of coastal tidal flats, with a salinity of more than 3 per thousand and less than 8 per thousand of saline-alkali land, because of its high salt content, it is either left unused or barely used. Those that are barely utilized have low yields and poor economic benefits. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in ...

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Problems solved by technology

[0003] The object of the present invention is to provide a saline-alkali underground pipe with long service life and good drainage, so as to solve the problems of poor drainage effect, high cost, inconvenient use, poor filtering effect and short service life proposed in the above background technology. question

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