摘要
含水率测量主要可以分为三类:破坏性、接触式、非接触式。本文详细考察了各种含水率测量方法的原理和优缺点,指出了各种方法的局限性和适用领域。经比选:实验室测量土样含水率最好的方法是微波法,其烘干效率较高、结果可靠;若要求无损测量含水率,近红外水分仪是较好的选择;现场最好的测量方法是TDR法,操作简便,可连续测量。目前土壤含水率的测量方法正向快速、长期、非破坏性、自动化方向发展。
Different methods have been developed to determine soil moisture content,which can be classified into three categories：destructive,contact and noncontact methods.Based on a detailed study on the principle,advantage and disadvantage of the three methods,the limitation and applicable of each method is presented.Upon the comparison,the best moisture determination method in laboratory is microwave which has high efficiency on drying and the results are reliable,near infrared moisture meter is a good choice if require to nondestructive measurement of moisture content,while the best one in the field is TDR method which can be operated simply and measured continuously.The techniques to determine the soil moisture content is now developing in a fast,long-term,non-destructive and automatic way.
出处
《工程勘察》
2014年第9期17-22,35,共7页
Geotechnical Investigation & Surveying
基金
科技部973项目资助(2012CB026104)
教育部新教师基金(20110009120022)
多年冻土地区公路建设与养护技术交通行业重点实验室青海研究观测基地开放基金
