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Application of a kind of sand-fixing agent in sandy sand barrier

A sand-fixing agent and sand quality technology, which is applied in application, soil protection, organic fertilizer, etc., can solve the problems of low shear strength, unstable properties, wind and sand and easy wind erosion, etc., and achieves long validity period, increased moisture content, and easy use convenient effect

Inactive Publication Date: 2011-11-30
LANZHOU RAILWAY SURVEY & DESIGN INST +1
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AI Technical Summary

Problems solved by technology

[0003] Due to the small particles of aeolian sand, there is no cohesion, unstable properties, poor structure, and poor integrity in the dry state, resulting in low shear strength, windy sand, and easy wind and water erosion.

Method used

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Embodiment Construction

[0013] When in use, take 90% polyvinyl alcohol, viscosity 0.055-0.065Pa·s, alcoholysis degree 99.0%-99.8%, add 2% boric acid, stir, add 8% sawdust, use 5 times warm water (25- 55°C) to dilute and stir evenly, then spray it with a sprayer to spray evenly. The amount of dry sand-fixing agent per square meter is 125g (the amount of water-quality sand-fixing agent is 1kg), forming a 0.3-1.0cm thick consolidation layer. When diluting the sand-fixing agent in the field, a circulating pump must work continuously to keep the water quality and sand-fixing agent mixed evenly.

[0014] Spraying water-quality sand-fixing agent is usually carried out by manual spraying. When the area is large, large-scale mechanical spraying is generally used.

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Abstract

The invention relates to the application of a sand-fixing agent in sand-fixing and control of sand damage. The sand-fixing agent is composed of 88-94% polyvinyl alcohol, 1-2% boric acid and 4-10% sawdust. When using, add water to dilute, stir evenly, and then spray evenly. The sand-fixing agent is a colorless, transparent, slightly turbid liquid with no peculiar smell, viscosity of 12Pa.s-15Pa.s, no sinking at 10-70°C, and experimental compressive strength of 1.0Mpa-12.1Mpa at low temperature of 10-20°C The weight loss rate is 0-1.8%, the intensity loss rate is 0-42% after 300 hours of ultraviolet light irradiation, and the wind erosion amount is 0.05g.h-1.100cm2 under the experimental wind speed of 5.0-25.0m / s. 0.5 cm thick consolidation layer. In the control of wind and sand hazards in the wild, the effective period is 5-10 years. In addition, it is water-resistant, environmentally friendly, has good mechanical properties, and does not produce secondary pollution.

Description

technical field [0001] The invention belongs to the application of a water-quality sand-fixing agent in sand-fixing and sand damage control. Background technique [0002] The Qinghai-Tibet Railway is one of the four key projects in the implementation of the Western Development Strategy. From Golmud in Qinghai Province to Lhasa, Tibet, with a total length of 1118Km, it is the only railway line in the world that crosses the alpine and arid plateau permafrost desert. There are more than 150 places with sand damage, the cumulative mileage is 250Km, and the area with severe sand damage is about 170Km. In sandy areas, wind erosion is very serious. The fine sand on the surface depends on the wind, and the sand accumulates in a certain area along the wind direction. This phenomenon endangers the safe operation of the railway. Activities to prevent quicksand from burying railways. Currently, based on the idea of ​​sand control and local materials, 1×1m or 1×2m square sand barriers p...

Claims

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Application Information

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IPC IPC(8): C09K17/40E02D3/12C09K105/00
Inventor 唐玉龙周飞飞李冲应忠旺顾磊屈建军韩庆杰张克存
Owner LANZHOU RAILWAY SURVEY & DESIGN INST
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