嘉峪关关城夯土遗址墙体含水率与电导率关系研究

Relationship Between Water Content and Electric Conductivity of the Earthen Walls of the Jiayuguan Pass

测定了嘉峪关关城夯土遗址墙体含水率和城墙体土样浸出液电导率的含量。研究结果表明:盐分随水分发生运移,盐分运移与水分运移关系密切;在一定温度下,随着含水率的增大,土样浸出液电导率呈幂函数关系减小;由于盐分在遗址表层堆积,土体表面泛白酥解,严重时脱落。这些研究将为治理土遗址盐害提供依据。

Water content and electric conductivity of the earthen walls of the Jiayuguan Pass is measured through the lixivium. Results show that salt moves with water, and the movement of salt and water are closely related. Under certain temperature, electric conductivity of the lixivium decreases as water content increases,which displays a power function relation. Because of the crystallization of salt, the surface soil of the earthen ruins is soft and loose, and even falls off. The research provides scientific basis for the control of salt damage.