Three-dimensional open ditch and subsurface pipe salt-draining system of saline-alkali soil and construction technology of three-dimensional open ditch and subsurface pipe salt-draining system of saline-alkali soil

Abstract

The invention provides a three-dimensional open ditch and subsurface pipe salt-draining system of saline-alkali soil and a construction technology of the three-dimensional open ditch and subsurface pipe salt-draining system of the saline-alkali soil. The three-dimensional open ditch and subsurface pipe salt-draining system of the saline-alkali soil comprises installation frames, wherein a plurality of first subsurface pipe bases are arranged on each installation frame, each first subsurface pipe base comprises a first subsurface pipe upper base and a first subsurface pipe lower base which arearranged vertically, each first subsurface pipe upper base is fixedly installed on one corresponding installation frame, each first subsurface pipe lower base is slidingly installed on one corresponding installation frame through a corresponding first lifting device, a second subsurface pipe base is arranged between each two adjacent first subsurface pipe bases, each second subsurface pipe base comprises a second subsurface pipe upper base and a second subsurface pipe lower base which are arranged vertically, each second subsurface pipe upper base is fixedly installed on one corresponding installation frame, and each second subsurface pipe lower base is slidingly installed on one corresponding installation frame through a corresponding second lifting device. According to the three-dimensional open ditch and subsurface pipe salt-draining system of the saline-alkali soil and the construction technology of the three-dimensional open ditch and subsurface pipe salt-draining system of the saline-alkali soil, by additionally arranging the installation frames used for fixing subsurface pipes, the stability and the reliability of fixed installation of the subsurface pipes are improved, andby laying the multiple layers of subsurface pipes, a salt-leaching range is greatly extended, so that the three-dimensional open ditch and subsurface pipe salt-draining system of the saline-alkali soil and the construction technology of the three-dimensional open ditch and subsurface pipe salt-draining system of the saline-alkali soil have the characters that the salt-leaching efficiency is high,waste of water resources is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a three-dimensional open ditch hidden pipe salt discharge system and construction technology for saline-alkali land. Background technique [0002] Saline-alkali land refers to the land where the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which the area of ​​saline-alkali land in my country is 99.13 million hectares. One of the countries with the most severe globalization hazards. At present, there are two main measures to improve saline-alkali land: one is to reduce the salinity in the soil to a level that crops can adapt to; the other is to improve the salt-alkali tolerance of crops. [0003] However, in the existing saline-alkali land improvement devices and methods, there are mainly the following probl...

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Problems solved by technology

[0003] However, in the existing saline-alkali land improvement devices and methods, there are mainly the following problems: the first is that the hidden pipe is directly laid in the deep ditch dug in the saline-alkali land, and there is no fixing device to fix the dark pipe. The soil is relatively soft during salt washing and salt discharge, and it is very easy to bend or even break due to the movement of the position of the hidden pipe; the second is that most of them only lay a layer of hidden pipes for salt washing and salt discharge, and the range of salt washing can be compared Narrow, and the efficiency is extremely slow, which is a waste of water resources and time

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