CN1209449A - Sand stabilization method for spraying liquid binder - Google Patents

Abstract

The present invention relates to a method for solidification of sand desert. It is characterized by that a liquid binding agent is sprayed on the sand surface of sand desert having need of stabilization of sand, and after a period of time the sand layer on the desert surface can be bound and solidified to attain the goal of stabilizing sand. Said invention possesses the advantages of rapid sand-stabilizing speed, low cost, saving work, long retaining time, no hurmful action to environment and plants and good effect for fixing shifting dune.

Description

Sand stabilization method for spraying liquid binder

The invention belongs to a kind of engineering sand-fixation method in the desert control method.

At present the engineering sand-fixation method has generally that straw checkerboard barrier sand-protecting barrier, vertical sand barrier, tiling sand-protecting barrier, cobble fix the sand, clay fixes the sand etc., and wherein the most frequently used is straw checkerboard barrier sand-protecting barrier and clay sand-protecting barrier.The disadvantage of these engineering sand-fixation methods is cost height, and it is big to take a lot of work, and the shelf time is short.

Although best sand-fixation method is a vegetative sand control, but very abominable for natural condition, and suffer drift sand to threaten very serious industrial and mining enterprises, communications and transportation, the situation that fix the sand rapidly in partial area such as urban settlement and requiring, engineering fixes the sand just to have ample scope for one's abilities.Even vegetative sand control owing to some husky district wind-force is powerful, can be fallen the very fast deflation of plant under planting, it is possible to have only the engineering of employing to fix the sand with vegetative sand control way of combining ability in this case.

Advantages such as the purpose of this invention is to provide a kind of brand-new engineering sand-fixation method, it has overcome the shortcoming of existing engineering sand-fixation method, and it is low to have a cost, and it is few to take a lot of work, and the shelf time is long, it can replace existing engineering sand-fixation method comprehensively.

The present invention realizes in the following manner, and liquid-containing binder is sprayed to the sand surface in the desert by spray appliance (as atomizer etc.), and after a period of time, one deck sand of desert surface gets final product adhesive solidification, has reached the purpose of fixing the sand.

The binding agent that the present invention uses should be inexpensive, nontoxic, under field conditions (factors) can adhesive solidification, plant-growth and environment are had no adverse effects, generally select water glass for use, organic high molecular compound solution (as polyvinyl alcohol, polyacrylamide, sodium polyacrylate, Mierocrystalline cellulose etc.), spent pulping liquor, some processing of farm products waste liquids etc.Viscosity and the depth of penetration of raising binding agent in sand in order to reduce liquid-containing binder can add thinner and permeate agent in used binding agent.In order to reduce cost and not harm environment; the general water-soluble binder that adopts, used thinner is a water, permeate agent is some tensio-active agents; as N acyl methyltaurin sodium etc.; it can reduce the surface tension of liquid, thus can improve depth of penetration, for water-soluble binder; in order to improve depth of penetration; can spray one deck water on the sand surface and spray binding agent again,, spray solidifying agent again after can in binding agent, adding solidifying agent or spraying binding agent for the situation that requires the curing speed express train.

In the desert with the hazardness maximum of active sand dune, the present invention is good especially to administering the active sand dune effect, need only spray a divergent liquid-containing binder on the active sand dune surface and can make active sand dune become dikaka, even only on the windward slope of active sand dune, spray liquid-containing binder and also can fix it.

Sand dune and dune range for band shape or trellis, binding agent gets final product only to need to spray upward, for more smooth sand district, fix the sand and the choke effect in order to increase, spray binding agent again after can first Jiang Sha district being transformed into trellis, fix the sand for small area, artificial or machinery gets final product in terrestrial operation, fix the sand for big area, aboard the spraying liquid binding agent.

Fix the sand to combine under the situation of fixing the sand in engineering, but the Jiang Sha district causes gridiron, is spraying binding agent on the grid again with vegetative sand control, and on the kind of grid center plant.

Embodiment:

The water glass thin up is become the solution of solid content 10%, again it is packed in the atomizer, it is pressed 800g/m ²(be effective content 80g/m ²) be sprayed on the active sand dune surface, active sand dune can be become dikaka.

Claims (3)

1, a kind of sand stabilization method for spraying liquid binder is characterized in that spraying liquid binder on sand surface, desert that needs fix the sand.

2, sand stabilization method for spraying liquid binder according to claim 1, it is characterized in that liquid-containing binder comprises water glass, organic high molecular compound solution (as polyvinyl alcohol, polyacrylamide, sodium polyacrylate, Mierocrystalline cellulose etc.), spent pulping liquor, some processing of farm products waste liquids etc.

3, sand stabilization method for spraying liquid binder according to claim 1 is characterized in that adding thinner and permeate agent in liquid-containing binder.