Improvement method for highway medium separation area snow-melting agent salt damage soil

Abstract

The invention discloses an improvement method for highway medium separation area snow-melting agent salt damage soil. The improvement method comprises the steps that a medium separation area is uniformly divided into a plurality of same soil improvement units in the front-back direction of a highway; an improvement process of each soil improvement unit comprises the steps of soil discharging pond arrangement, leaky pipe and drain pipe burying, drainage arrangement and soil improvement; and soil improvement is conducted by sequentially laying a soil improvement layer, an organic substrate layer and a Moqi covering layer on the surface of the soil. According to the improvement method for the highway medium separation area snow-melting agent salt damage soil, the disoperation effect of a salt type snow-melting agent on the soil is converted through the soil improvement layer; soil renewing is facilitated through the organic substrate layer, the soil activity and fertility are increased, and plant layers are increased at the same time, so that the landscape effect of medium separation area landscapes is improved; by laying the Moqi covering layer, turning waste into wealth can be achieved, and the economic and ecological benefits as well as the environmental protection effect are achieved; salt discharging and separating are facilitated through leaky pipe laying, so that secondary salinization and alkalinization are prevented; and the improvement method is easy to construct, convenient to operate, capable of being used circularly and suitable for large-scale application in areas along the highway.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a method for improving salt-damaged soil by deicing agents in zonal highways. Background technique [0002] The snow-melting agent is mainly salt, no matter abroad or at home, there are basically two types of snow-melting agent: one is an organic snow-melting agent with potassium acetate as the main component, which costs more than 10,000 yuan per ton. It will only be used in airports and other places; the other is inorganic snow-melting agents, most of which are chlorine salts, including sodium chloride, calcium chloride, etc., and the price is relatively cheap, only equivalent to 1 / 10 of organic snow-melting agents. [0003] At present, inorganic snow-melting agents are mainly used for snow removal on roads in my country. Extensive use of such snow-melting agents will cause "salt damage". When salty snow water enters the water body, it will pollute rivers ...

AI Technical Summary

Problems solved by technology

In addition, the chloride salt penetrates into the concrete and corrodes the steel bars, causing the steel bars to crack and fall off, resulting in a decrease or loss of structural bearing capacity.

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