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本文介绍了在极高吸力工况下，介质吸力与含水率关系的测定工作，由于传统的测量方法此时的不适用性，本文研究采用保持密闭空间定湿度的饱和盐溶液方法，进行了高压实膨润土吸力－含水率关系的测定，测量结果显示，对于高压实膨润土，给定吸力情况下的最终含水率与试样初始干密度及初始含水率无关，这个结果对于研究非饱和状态下水分迁移有极其重要的意义。
This article describes the determination of the relationship between the suction and the moisture content of the medium under very high suction conditions. Due to the inapplicability of the traditional measurement methods at this time, this study investigated the use of a saturated salt solution that maintains the humidity in a confined space. The determination of the relationship between the suction-water content of compacted bentonite shows that for high-pressure bentonite, the final moisture content under a given suction condition is independent of the initial dry density and the initial moisture content of the sample. This result is for the study of unsaturated conditions. Moisture migration is of great importance.