合肥市南淝河河道土质边坡高密度电阻率法勘查实践

HIGH-DENSITY RESISTIVITY SURVEY OF SOIL SLOPE OF THE CHANNEL OF THE NNAFEI RIVER IN HEFEI CITY

南淝河称之为合肥市的母亲河。为了确保河道工程安全运行,全面、客观地了解工程现状及存在的隐患,并为安全鉴定及结构复核计算等工作提供一线技术资料,对河道的土质边坡采用高密度电阻率法进行勘查。对勘查存在隐患的部位提出了工程验征,验证结果表明,低阻异常是含水细沙层或粉质淤泥层,证实了高密度电阻率法推断的结论。

The Nanfei River is called the mother river of Hefei City.High-density resistivity survey of the soil slope of the river channel was carried out to ensure operational safety of the river course engineering,as well as comprehensive and objective understanding of the engineering situation and existing hidden trouble,and to provide first-hand data for safety appraisal and structural recomputation.Engineering verification test was performed on the hidden trouble part disclosed by the survey.The test results indicate that the low resistivity anomaly is water-bearing fine sand layer or silty mud layer as expected.