School of Civil Engineering and Architecture, Henan University, Kaifeng, 475004, China.
Key Laboratory for Restoration and Safety Evaluation of Immovable Cultural Relics in Kaifeng City, Kaifeng, 475004, China.
Sci Rep. 2022 Jul 7;12(1):11574. doi: 10.1038/s41598-022-15802-6.
Alkalinity production is one of the most typical and widespread salinization hazards on the Loess Plateau. Based on the characterization of typical flooding sites and the results of salt monitoring, this study investigates the deterioration mechanism of salinization on Zhouqiao site. The orthogonal test was used to simulate the effects of different concentrations of MgSO, NaCl and CaCl under natural conditions on the quality change, salt analysis out location, surface phenomenon, strength and electrical conductivity of the soil at the Zhouqiao site, and to make a preliminary analysis on the mechanism of saline deterioration of the site soil. The results show that the soil column mass increased significantly under the action of salt, and the rate of salt absorption in the soil column decreased when the critical value was reached, and the critical values were different under the action of different kinds of salts. The rate of salt analysis is also influenced by the salt concentration and the number of cycles, which gradually increases with the increase of salt concentration and the number of cycles. The nominal strength of the soil column with the number of cycles, but occasionally increases. The conductivity increases with the number of cycles, and the magnitude distribution of the conductivity of the soil column under the action of different salts is not exactly the same.
堿度产生是黄土高原上最典型和广泛的盐渍化危害之一。基于典型洪水地点的特征描述和盐监测的结果，本研究调查了桥村地区盐渍化的恶化机制。正交试验用于模拟不同浓度的 MgSO4、NaCl 和 CaCl2 在自然条件下对桥村土壤质量变化、盐分分析位置、表面现象、强度和电导率的影响，并对场地土壤盐渍恶化的机制进行了初步分析。结果表明，盐的作用使土壤柱质量显著增加，当达到临界值时，土壤柱中盐的吸收速率降低，不同盐类作用下的临界值不同。盐分析率也受到盐浓度和循环次数的影响，随着盐浓度和循环次数的增加而逐渐增加。土壤柱的名义强度随着循环次数的增加而增加，但偶尔也会增加。电导率随循环次数增加而增加，不同盐类作用下土壤柱电导率的大小分布不完全相同。
