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盐渍土地区地下水的毛管上升能引起一系列路基病害。为了防止这些病害,道路设计人员常常必须取得毛管水上升高度的数据,以便合理地设计路肩高度和毛管水隔断层。过去在工程建筑领域,还没有一种合适的方法可以测定地下水通过各种不同土层中的孔隙连续上升所能达到的高度。为了建立这种方法,本文提出了一种与路基病害相联系的有害毛管水上升高度的新概念。建议用粘性土的塑限含水量和砂类土的最大分子含水量作为有害毛管水上升的界限。并参考农业土壤学中的含水量分布曲线法解决了干旱盐渍土地区非均质成层土中的毛管水上升高度的测定方法问题。
The capillary rise of groundwater in saline soil area can cause a series of roadbed diseases. In order to prevent these diseases, road designers often have to obtain data on the height of the capillary water in order to properly design the height of the shoulder and the capillary water barrier. In the past in the field of engineering and construction, there was not yet a suitable method of determining the altitude to which groundwater can be continuously raised through the pores in a variety of different soil layers. In order to establish this approach, this paper presents a new concept of the height of ascending plume associated with subgrade disease. It is recommended that the plastic limit water content of clay and the maximum molecular water content of sand soil be used as the limit for the increase of harmful capillary water. The method of determination of the ascending height of capillary water in heterogeneous layered soil in arid saline area is also referred to with reference to the water content distribution curve method in agricultural soil science.