李胜辉,李诚志,付小磊

• 1:新疆大学生态与环境学院教育部绿洲生态重点实验室

摘要(Abstract)：

可溶性盐与风沙土胶结形成的盐结皮能提高风沙土抗风蚀能力，减弱沙尘灾害．风沙土中Na~+、Cl~-、SO_4~(2-)三种离子含量较大，因此本文选用NaCl、Na_2SO_4两种盐与风沙土进行结皮实验．各设置6个盐浓度梯度与风沙土胶结形成结皮，观测盐结皮的表观形态、晶体覆盖度、结皮强度、盐-土胶结颗粒质量、结皮层厚度、结皮应力-进深曲线，探讨两种盐结皮的力学特性．结果表明：含盐量较低时，盐结皮抗压强度和抗风蚀能力受含盐量影响较大；含盐量较高时，盐晶体性质对结皮抗压强度和抗风蚀能力影响较大．Na_2SO_4的结晶体相变会对结皮结构产生破坏，盐结皮的抗压强度和抗风蚀能力减小．通过对两种盐结皮力学特性的对比分析发现：盐浓度为1.5 mol/L的Na_2SO_4溶液形成的结皮的抗风蚀性能最强．

关键词(KeyWords)： 盐结皮;抗压强度;抗风蚀能力

Abstract:

Keywords:

基金项目(Foundation): 阿勒泰科技局重大项目（Y99M4600AL）

作者(Author): 李胜辉,李诚志,付小磊

DOI: 10.13568/j.cnki.651094.651316.2021.03.29.0003

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