利用高密度电阻率法进行盐渍土含水率的测定

摘要

Saline soil contains more soluble salt. Its engineering properties to moisture content are very sensitive. In combination with laboratory data and field test, this paper explores the resistivity method to indirectly measure the feasibility of saline soil moisture content. Saline soil water immersion test area of effect was surveyed with multi-electrode resistivity under specific temperature of indoors. Relationship of resistivity of saline soil and moisture content was determined. Combining with the results of multi-electrode resistivity inversion profile, the field observation of soil temperature field test is calculated within the scope of the water immersion test influence of the moisture content. Comparing with the moisture content of stratified sampling, the reliability of the mathematic models is verified.%盐渍土中含有较多的可溶盐,其工程性质对含水率很敏感.将室内试验与现场试验相结合探索了电阻率法间接测定盐渍土含水率的可行性.采用高密度电阻率法对盐渍土浸水试验后的影响范围进行测试,通过在室内恒定温度下测定的盐溃土电阻率与含水率的关系,建立特定土体结构下的电阻率与含水率的数学模型.现场实测高密度电阻率值,利用现场观测的土层温度,计算出浸水范围的含水率,与现场分层实测含水率进行对比,验证了数学模型的可靠性.