Lignin sand-fixing agent suitable for prevention and control of collapsing erosion

Abstract

The invention relates to a lignin sand-fixing agent suitable for prevention and control of collapsing erosion. The lignin sand-fixing agent is prepared from the following components, in parts by weight: 55-65 parts of a composite binder, 18-20 parts of a reinforcing agent, 15-17 parts of a water-retaining agent and 5-7 parts of a dispersing agent, wherein the composite binder is prepared from thefollowing materials, in parts by weight: 15-27 parts of modified acidic lignin, 15-27 parts of modified alkaline lignin and 25-30 parts of polyacrylamide. The modified lignin sand-fixing agent provided by the invention is suitable in a collapsing erosion area; and sulfonated and modified lignin are used as main raw materials, and the prepared lignin sand-fixing agent can maintain an original ecological environment of soil in addition to have the properties of fixing sand, resisting erosion and resisting collapse.

Description

technical field [0001] The invention belongs to the technical field of soil and water conservation engineering materials, and in particular relates to a lignin sand-fixing agent suitable for erosion prevention and control of collapsed hillocks. Background technique [0002] Collapsing hillside is a phenomenon of water and soil erosion caused by soil and rocks on hillsides and erosion. It is widely distributed in southern my country, causing serious damage to cultivated land and reducing farmland production. Serious erosion of hillside collapse can also easily lead to geological disasters. The difficulty in the control of collapsed hillock erosion lies in the high content of coarse particles and the poor water retention of the soil, which leads to the fact that the soil in the collapsed hillock erosion area is easily disintegrated and the vegetation is not easy to grow and develop, so that the collapsed hillock erosion is difficult to recover naturally. In addition, there are...

AI Technical Summary

Problems solved by technology

The main difficulty in the control of collapsed hillock erosion lies in its high content of coarse particles and poor soil water retention, which leads to the fact that the soil in the collapsed hillock erosion area is easily disintegrated and the vegetation is not easy to grow and develop, so that the collapsed hillock erosion is difficult to recover naturally

In addition, there are a large number of collapsed surfaces in the collapsing area, and these collapsed surfaces are often relatively steep. Conventional sand-fixing agent products are not easy to capture, making the application of sand-fixing agents difficult.

[0003] Existing soil sand-fixing agents are mainly for roads and construction projects. This type of sand-fixing agent will penetrate into cement and other hydraulic materials. The main improvement is the hardening of sand, which cannot maintain the original ecological environment of the soil. In the control of the Benggang erosion area: the Chinese patent with the publication number CN107032710A discloses a composite soil sand-fixing agent, and the Chinese patent with the publication number CN107973571A discloses a soil curing agent. Although the above-mentioned soil sand-fixing agent can improve the soil structure and improve the strength of the soil, but because this soil curing agent will also penetrate into cement and other hydraulic materials, it cannot ensure the soil's resistance to disintegration while still maintaining the original ecological environment of the soil

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