一种能直接量测高吸力的新型吸力传感器  

A suction probe for direct measurement of high matric suction

作　　者：张敏[1] 吴宏伟[2] 陈锐[2] 

机构地区：[1]深圳大学土木工程学院深圳市土木工程耐久性重点实验室,广东深圳518060 [2]香港科技大学土木工程系

出　　处：《岩土工程学报》2008年第8期1191-1195,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(50708060)

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。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.

关 键 词：直接测量 高吸力 气化 预压饱和 

分 类 号：TU415[建筑科学—岩土工程]