边坡监测中测斜误差与精度分析

Accuracy Analysis of Inclinometer in Slope Monitoring

测斜仪虽然在岩土工程监测中广泛应用,但其测量精度及误差处理研究较少。基于TCA2003全站仪与测斜仪两种仪器对边坡同一部位进行监测,对比位移监测过程线,分析测斜位移误差所包含的系统性成分如导槽扭转、零点漂移,计算结果表明测斜精度为±5~10mm。边坡变形分析时须考虑测斜误差的影响,对位移值进行系统误差改正。

Inclinometer is widely used in geotechnical engineering.But there is a few researches about its measurement accuracy and error processing.Based on monitoring the same site of slope through two instruments,i.e.,TCA2003 total station and in-clinometer,comparing displacement monitoring process line,then inclinometer displacement errors are analyzed,which include systematic components such as guide reversing and zero drift.The calculation results show the accuracy of inclinometer is ±5~10mm.The slope deformation analysis must be considered the influence of inclinometer error,and must perform sys-tem error correction.