过氯盐渍土的溶陷性和盐胀性研究  

Study on collapsibility and salt swelling of oversaline soil

作　　者：王宏博 WANG Hongbo(Xinjiang Transportation Planning Survey Design and Research Institute,Xinjiang Urumqi 830006 China)

机构地区：[1]新疆维吾尔自治区交通规划勘察设计研究院,新疆乌鲁木齐830006

出　　处：《山东交通科技》2021年第3期26-28,共3页

摘　　要：以哈密至若羌公路建设项目(简称哈若公路)沿线选取的3处盐渍土样为基础,采用XRD试验和易溶盐离子含量试验对土样化学成分分析对比;利用电镜扫描对代表性土样进行自然状态和吸湿状态下土样盐分变化对比,从微观角度分析过氯盐渍土溶陷机理;依据土样化学成分分析结果,针对土样中含量较多的NaCl成分,分析NaCl在不同含量下土样盐胀的变化规律。Based on three saline soil samples selected along the Hami-Ruoqiang highway construction project(hereinafter referred to as Haruo Highway),XRD experiment and soluble salt ion content experiment were used to analyze and compare the chemical composition of soil samples.The changes of salt content in typical soil samples were compared by scanning electron microscopy under natural and hygroscopic conditions,and the melt sinking mechanism of perchlorinated saline soil was analyzed from the micro perspective.According to the results of chemical composition analysis of soil samples,and aiming at the high content of NaCl in soil samples,the change rule of salt expansion of soil samples with different content of NaCl was analyzed.

关 键 词：过氯盐渍土 溶陷性 盐胀性 

分 类 号：TU418[建筑科学—岩土工程]