摘要
近年来,随着中溶盐在工程中受重视程度的提高,为了更好分析和试验、判定中溶盐的大小、合理性等,对中溶盐含量特征进行了分析研究。中溶盐的不同试验方法和关键步骤对含量的测试结果有重要影响;中溶盐含量与SO_(4)^(2-)含量和易溶盐总量具有较好的指数关系,与HCO_(3)^(-)含量、pH值等的相关性次之。中溶盐含量与地区气候、地形地貌、形成条件及人类活动密切相关;具有相似形成条件下新近沉积土的尾矿土、泄洪区土、水库土等中溶盐含量较为稳定;同等地质条件下,中溶盐含量与地层深度呈规律性分布;中溶盐含量与土的黏性有一定关系,一般黏性越大,中溶盐含量越低;中溶盐含量与砂土粒径具高相关性,砂土中粒径越大,中溶盐含量越低;同种砂土中,黏性土含量越大,中溶盐含量越大。通过对中溶盐含量的系统研究,不仅加深了对中溶盐的认识,有利于分析中溶盐数据的正确性和合理性,而且为中溶盐相关工程地质问题的解决提供了重要参考。
In recent years,with the increasing emphasis on moderately soluble salts in engineering,in order to better analyze,test,and determine the magnitude and rationality of moderately soluble salts,the characteristics of moderately soluble salt content have been analyzed and studied.Different experimental methods and key steps for moderately soluble salts have a significant impact on the test results of their contentt;the content of moderately soluble salts has a good exponential relationship with the content of SO_(4)^(2-)and the total amount of soluble salts,followed by the correlation with the content of HCO_(3)^(-)and pH.The content of dissolved salts is closely related to regional climate,topography,formation conditions,and human activities;the dissolved salt content in tailings soil,flood discharge area soil,reservoir soil,and other recently deposited soils with similar formation conditions is relatively stable;under the same geological conditions,the content of moderately soluble salts follows a regular distribution pattern with respect to the depth of the geological strata;there is a certain relationship between the content of soluble salts and the viscosity of soil.Generally,the higher the viscosity,the lower the content of soluble salts;there is a high correlation between the content of soluble salts and the particle size of sandy soil.The larger the particle size of sandy soil,the lower the content of soluble salts;in the same type of sandy soil,the higher the content of cohesive soil,the higher the content of moderately soluble salts.Through systematic study on the content of soluble salts,not only has the understanding of soluble salts been deepened,which is beneficial for analyzing the correctness and rationality of soluble salt data,but also provides important references for solving engineering geological problems related to soluble salts.
作者
刘军
颉铎铃
张英春
牛天娇
Liu Jun;Xie Duoling;Zhang Yingchun;Niu Tianjiao(Nuclear Industry of China Geotechnical Engineering Co.,Ltd.,Shijiazhuang 050021;Xi’an Engineering Investigation&Design Research Institute of China National Nonferrous Metals Industry Co.,Ltd.,Xi’an 710054;China Railway Design Group Co.,Ltd.,Tianjin 300251)
出处
《工程勘察》
2025年第7期28-35,共8页
Geotechnical Investigation & Surveying
