土遗址墙体含水量与电阻率关系研究  

RESEARCH ON RELATIONSHIPS BETWEEN WATER CONTENT AND RESISTIVITY OF EARTHEN RUIN WALLS

作　　者：周仲华[1,2] 郑龙[1,2] 孙博[1,2] 

机构地区：[1]兰州大学西部灾害与环境力学教育部重点实验室,甘肃兰州730000 [2]兰州大学土木工程与力学学院,甘肃兰州730000

出　　处：《岩石力学与工程学报》2009年第A02期4054-4058,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家"十一五"科技支撑项目(2006BAK30B02)

摘　　要：多孔介质电阻率的影响因素很多,对于特定结构的土遗址墙体,电阻率的变化取决于水分和温度的变化。对交河故城土遗址墙体夯土电阻率模型分析,结合改进的Archie模型,建立特定结构墙体电阻率模型,通过室内电阻率与含水量的关系试验,确定模型公式中的结构参数和土性参数。根据试验建立的墙体电阻率反演含水量关系式,采用高密度电阻率层析法,对交河土遗址现场试验墙体进行尝试性测试。测试结果论证了该模型公式的实用性,为土遗址文物本体水分运移监测中的实际应用奠定基础。Porous media resistivity is affected by a number of factors.In the specific structure of the soil wall sites,changes in resistivity depend on the moisture and temperature changes.By the resistivity model analysis of rammed earth wall in Ruins of Jiaohe,combining with the improved Archie model,a resistivity model for the wall in a specific structure is established by the tests to find out the relation between water content and resistivity,and to determine the structural parameters and soil parameters in the model formula.According to the established formula by the moisture inversion with the resistivity,using high-density resistivity chromatography,the field wall in Ruins of Jiaohe is tested.The results demonstrate the practicality of the model formula in relics sites,which lays foundation for practical application of monitoring water translocation in relics sites.

关 键 词：土力学 交河故城 土遗址 水分监测 电阻率模型 水分运移 高密度电阻率法 

分 类 号：TU411[建筑科学—岩土工程]