对称四极电测深法在测量场地浅部地层土壤电阻率中的应用  

Application of Symmetrical Quadrupole Electrical Sounding Method for Measuring Soil Resistivity in Shallow Strata of Site

作　　者：王雅君 通瑞生 薛维俊 WANG Yajun;TONG Ruisheng;XUE Weijun(Inner Mongolia Electric Power Survey&Design Institute Co.,Ltd.,Hohhot 010011,China)

机构地区：[1]内蒙古电力勘测设计院有限责任公司,呼和浩特010011

出　　处：《内蒙古电力技术》2020年第3期62-66,共5页Inner Mongolia Electric Power

摘　　要：总结了对称四极电测深法野外实测工作经验,设计常规极距排列装置;对场地实测电测深曲线进行定性解释,定性分析确定电测深曲线形态、渐近线、极值等,定量解释确定测点地电断面参数,采用概率统计方法给出场地各电性层电阻率值;结合某拟建变电站场地浅部地层土壤电阻率测量工程实例,证明对称四极电测深测试成果更好满足设计要求,并提出设计时必须考虑全年场地浅层土壤电阻率的变化,实测期间提供的数据只代表当时温湿状态下数值。The experience of field measurement of symmetrical quadrupole electrical sounding method is summarized,and the conventional polar distance arrangement device is designed.Qualitative interpretation are carried out for the measured electric sounding curve of the site,the shape,the asymptote,and the extremum of the electric sounding curve shall be determined through qualitative analysis,and the parameters of the geoelectric section of the measuring point shall be determined through quantitative interpretation.Obtain the resistivity value of each electrical layer in the field with the probability statistical method.Combined with a project of soil resistivity measurement in the shallow stratum of a proposed substation site,it is proved that the measurement results of symmetrical quadrupole electrical sounding can better meet the design requirements.It is suggested that the variation of the resistivity of the shallow soil should be considered in the design.The data provided during the actual measurement only represents the value under the current temperature state.

关 键 词：土壤电阻率 对称四极电测深法 电测深曲线 测量电极 

分 类 号：P631.3[天文地球—地质矿产勘探] TM63[天文地球—地质学]