Study On The Automatic Measurement System Of Unsaturated Soil Hydraulic Properties

With the wide application of modern mathematics, physics and computer, all the academic disciplines have being developed quickly, so how to make use of these modern science and technology in the soil physics experimental study has become the main way to develop this subject.Based on referring internal and external literatures, by many laboratory test and data analysis, the paper represented the cause of making use of the automatic data acquisition system to measure the soil hydrodynamic parameter and making a comparison with the traditional test results. The main contests are:First, generalize and analyze the internal and external literatures which are related to the measurement of the soil hydrodynamic parameter, in a systematical way. Based on the generalization and analysis, the study contests are advanced. The second, generalize the determine methods of the characteristic curve of soil water, and use 15 bar pressure-membrane apparatus to test. Introduce the experimental facility and experimental method of the conductivity and diffuseness of the soil hydraulic power; by laboratory experiments and computer automatic data acquisition and manipulation, analyze the difference and problems between automatic processing system and traditional manual experiments.Finally generalize the whole fruiting; propose the problems which need improving in future.