一种能直接量测高吸力的新型吸力传感器

一种能直接量测高吸力的新型吸力传感器 English Version

基金项目: 国家自然科学基金项目(50708060)

1.Shenzhen Key Lab of Durability in Civil Engineering School of Civil Engineering Shenzhen University Shenzhen 518060 China 2.Hong Kong University of Science and Technology Hong Kong China

摘要: 研制了一种可以直接测量非饱和土中高吸力的新型吸力传感器以及相应的饱和装置。传感器本身的设计以及特定的饱和过程保证了该传感器可以测量到500 kPa的吸力。通过标定溶液浓度以及其通过半透膜产生的渗透吸力之间的关系,发现其结果与已有研究结论一致,验证了该传感器的测量准确性。
- 直接测量 /
- 高吸力 /
- 汽化 /
- 预压饱和
Abstract: A suction probe and a saturation system were developed to measure the negative pore water pressure(matric suction) directly.After adopting purposely designed saturation procedures,the probe was able to measure a suction up to 500 kPa.The accuracy of the probe was verified by calibrating it using an established relationship between the osmotic suction and the concentration of a salt solution.Consistent results were obtained.
- direct measurement /
- high suction /
- cavitation /
- pre-pressurization