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我省冬季气候寒冷,基土冻胀上抬使渠道及建筑物严重破坏。为了研究冻土水分含量及其迁移变化过程,过去一直沿用人工取样烘干称重法,但冬季取土困难很多,试验误差较大,且破坏土壤的原状结构。采用3221型水分仪可以解决上述困难。一、仪器的性能和特点该仪器的优点;测前不必预埋套管,不需取样,不破坏土壤原来的结构,可连续测量。它只测定土壤的容积含水量,不能测容量。配有微处理机,机内储有水分测量的全部标定参数和相应的计算程序,一分钟后即可将被测土壤的含水量显示出来。使用~3He 中子探测器,探测效率高,寿命长,液晶显示,充电一次可用70小时,适用野外测量。仪器还装有标准计
Cold weather in our province winter, frost heave uplift of soil so that the channels and buildings seriously damaged. In order to study the moisture content of frozen soil and the process of its migration and change, the manual sampling and drying weighing method has been used in the past. However, it is difficult to obtain soil in winter and the experimental error is large and the original structure of the soil is destroyed. The 3221 moisture meter can solve the above difficulties. First, the performance and characteristics of the instrument The advantages of the instrument; Before testing do not have to pre-buried casing, without sampling, does not destroy the original structure of the soil can be measured continuously. It only determines the volume of soil water content, can not measure capacity. Equipped with a microprocessor, the machine stored moisture measurement of all the calibration parameters and the corresponding calculation program, a minute later can be measured soil moisture content is displayed. Use ~ 3He neutron detector, detection of high efficiency, long life, liquid crystal display, charging available 70 hours, suitable for field measurements. Instrument is also equipped with a standard meter