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利用直流电场驱动水分自上而下的移动,与毛细水的上升过程抗衡,抑制毛细水持续上升,探索潮湿环境土遗址的加同保护.结果表明:在加下行电场时含水率变化量随高度增加而线性递减;在加上行电场时含水率变化量随高度增加而线性递增.蒸馏水补给时,加下行电场的天然土样含水率最多可降低5.38%,含盐土样含水率最多可降低6.30%;加上行电场的天然土样含水率最多可升高3.39%,含盐土样含水率最多可升高8.81%.电场作用下,盐分的掺人加强了试样中水分运移量.直流电场抑制潮湿土遗址毛细水上升效果显著,有望成为一种适合于潮湿环境土遗址保护的新方法.
The DC electric field is used to drive the movement of water from top to bottom and to contend with the rising process of capillary water to restrain the continuous increase of capillary water and to explore the protection of the sites of damp environment with the same protection.The results show that the variation of moisture content with the height Increasing linearly with increasing electric field.When the electric field is added, the variation of water content increases linearly with the increase of height.When the distilled water is supplied, the natural soil sample with downward electric field can reduce the water content by up to 5.38% and the water content of salty soil sample by up to 6.30 %. The natural soil water content plus the electric field of the row can increase up to 3.39%, and the moisture content of the saline soil can increase up to 8.81%. Under the action of electric field, the addition of salt strengthens the amount of water migration in the sample. Field inhibition of wetland site capillary water rise effect is significant, is expected to become a suitable wetland conservation site of the new method.