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古代土遗址病害发展与土的含水率变化密切相关,但土遗址保护现场快速准确测定土的含水率不是一件容易的事。选择遗址土、含盐土、黄土等进行对比试验,研究分析微波炉烘干法(简称微波炉法)测遗址土含水率结果的可靠性。在测定试验土样界限含水率和易溶盐含量的基础上,对比分析微波炉法、烘箱法两种方法测定土含水率的误差来源。试验结果表明,土的塑性对微波炉法的测定有一定影响,但测定误差均在2%以内;土的含盐量影响水分的蒸发速度,不影响微波炉法的测定结果;微波法测定遗址土含水率准确,且具有快速、便捷等优势,值得在土遗址保护工程中推广使用。
The development of ancient soil ruins is closely related to the change of soil water content. However, it is not an easy task to determine the soil water content quickly and accurately on the site of site conservation. Select the site of soil, saline soil, loess and other comparative tests to study the analysis of microwave oven drying method (referred to as microwave oven method) ruins soil moisture content of the reliability of the results. Based on the determination of the limit moisture content and the content of soluble salt in the test soil samples, the error sources of soil moisture content were compared by microwave oven method and oven method. The test results show that the plasticity of soil has certain influence on the determination of microwave oven method, but the measurement error is less than 2%. The salt content of soil affects the evaporation rate of water and does not affect the determination result of microwave oven method. Accurate rate, and has the advantages of fast, convenient, it is worth to promote the use of earth ruins protection project.