化学固沙材料在干旱沙漠地区的应用

Analysis of chemical sand-fixing materials for sand fixation in arid desert area

在查阅大量文献的基础上,探讨了化学固沙原理。通过实地试验,较系统地分析了常用的化学固沙材料、效果及在干旱沙漠地区应用化学固沙材料的适宜性。新型化学固沙材料及其特性的研究是当今化学固沙的重要内容。文章简要介绍了新型化学固沙材料的研究进展。SH为新型高分子材料,具有较高的强度、良好的耐水性、抗冻融和耐老化性能,成本低,喷洒工艺方便、简单,是固沙的理想产品。化学固沙快速方便,但防沙作用差,应开展化学-生物固沙一体化综合研究。固沙植被用新材料及低成本制备技术的研发,将在年降雨量只有数10mm的WN广大沙漠区防沙治沙中具有广阔的应用前景。

On the basis of a great deal of references,theory of chemical sand-fixation is studied.Chemical sand-fixing materials,their effects,their uses and the suitability of chemical sand-fixing materials in sand fixation in desert areas are analyzed systematically,too.The study of chemical sand-fixing materials and their characteristics are an important study direction in chemical sand-fixation.This paper introduces the research progress of new chemical sand-fixing materials briefly.SH is new polymeric material of chemical sand-fixation.The results of experimental research about SH show the fact that SH is of high strength,good resistance in water,freeze-thaw and aging,but also of low cost and simple spraying technique.SH is an effective material for sand-fixation in desert control.The chemical sand fixation is convenient and fast,but with bad sand control effect.A new view is suggested.Chemical-plant as a whole is developed in sand fixation for comprehensive desert control.It is estimated that in desert area of northwest China(including Gansu and Xinjiang,etc.),where the annual rainfall is only tens of mm,chemical and fixation ,new super absorbent materials in sand fixation vegetation and low-cost preparation technology will have a wide prospect for desert control.