Infiltration pipe salt discharging method for coastal salt soil

Abstract

The invention discloses an infiltration pipe salt discharging method for coastal salt soil. The process method is as follows: (1) Preparing construction, setting out, determining the location elevations of an alkali drainage well and salt drainage channels; (2) excavating the salt drainage channels along the setting-out position. The beginning is deep and the ending is shallow with a slop of 0.3%-0.5%. Setting salt drainages every 15m-30m. The bottom of the salt channel will be rammed and the excavated alkali earth will be removed; (3) Before laying the infiltration pipe, 10 cm of sand shall be laid on the salt discharge channel and the surface of the infiltration pipe shall be wrapped with brown skin, geotextile, woven fabric or plastic bag and tied with wire or rope; The method can greatly reduce the cost of natural resources and engineering construction, effectively prevent the salinization of the soil, form a good ecological cycle, reduce the salt content of the soil with a desalinization ratio of up to 20%-40%. The effect of the treatment of saline-alkali soil is remarkable. The salt drainage period is shorten. The survival rate of the plants is increased. There's a lot of application prospects.

Description

technical field [0001] The invention relates to the technical field of salt drainage in coastal saline soil, in particular to a salt drainage method for seepage pipes in coastal saline soil. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that 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 my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil. The soil pH is generally higher than 8.0, and the total salt content of the soil in some areas is higher than 0.5% (in some months, the value will be higher), which cannot meet the requirements. The growth of most plants requires that in order to build landscape greening projects under such conditions, the soil pr...

AI Technical Summary

Problems solved by technology

However, although this method can achieve certain results, many technical methods and construction techniques are relatively lagging behind. It takes one year to improve the saline-alkali land to plant trees, and the development of coastal land resources in my country is relatively slow.

[0004] Chinese Patent Authorization Publication No.: CN104255107B announces a kind of seashore saline soil vertical seepage pipe salt discharge method, the method comprises the following steps: 1), at first carry out the leveling and modeling of the land on the determined greening land; 2), after leveling On the green land, a temporary open ditch is set at intervals, the width of the open ditch is 50-60cm, and the depth is 90-100cm; 3), the installation of the vertical seepage pipe: put the vertical seepage pipe prepared in advance into the bottom of the open ditch, adjacent The axial distance of the seepage pipe is 5m, and a drain pipe is installed at the bottom of the vertical seepage pipe, and the drain pipe is directly connected with the municipal well or the drainage well; 4), the original soil of the open ditch is backfilled in the ditch; 5), Carry out the secondary leveling and modeling of the green land, and spread 10cm thick original soil evenly mixed with bio-improvement agent above the soil surface; Wider range of coastal saline soil is promoted, and the pH and water leakage of coastal saline soil cannot be well adjusted