滤纸吸力率定曲线的研究  

Suction calibration for filter paper

作　　者：程金茹[1] 沈珍瑶[1] 李满喜 

机构地区：[1]中国辐射防护研究院,山西太原030006 [2]太原地质工程勘察院,山西太原030031

出　　处：《岩土力学》2002年第6期800-802,共3页Rock and Soil Mechanics

摘　　要：用滤纸测定非饱和土吸力,其基础是滤纸吸力的率定工作,对此国内外都有研究。对于国产滤纸,目前的率定曲线仅适应吸力较低的情况。基于以前的工作,利用饱和盐溶液法进行了吸力较高情况下滤纸吸力的率定工作,并对结果进行了分析,发现国产滤纸与国外滤纸率定曲线基本一致,可以分为斜率较大及斜率较小的两段,同时利用van公式对国产滤纸率定曲线进行拟合,发现其拟合精度更高。The method being used to measure the suction of unsaturated soil is based on the calibration of the suction of filter paper. This method was studied in China and abroad, but for homemade quantitative filter papers the calibration curves can just be used to lower suction. Based on the previous works we have made the calibration of filter paper suction at the higher suction. The calibration curves for the filter papers made in China or abroad are almost the same, which consists of two sections, one with larger slope and the other with smaller slope. We also found that the equation developed by van Genuchten is better to fit the calibration curve.

关 键 词：滤纸 吸力 率定 非饱和土 

分 类 号：TU411[建筑科学—岩土工程]