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现有边坡深部变形监测仪器易受雨水、泥石流、滚石等环境的影响,仪器布设较繁琐,且无法监测边坡深部滑移的中后期变形。基于磁场定位理论,采用磁性物质制作智能石头,在边坡深部布置智能石头,通过智能石头和全张量磁力梯度仪建立边坡深部大变形监测系统。基于磁场梯度张量缩并定位对智能石头进行三维定位,实现边坡深部的中后期大变形监测。针对全张量磁力梯度仪的精度和地球磁场梯度的影响,由三维磁感应强度和磁场梯度的分析,其有效监测距离为35 m;在磁场定位试验中,监测精度为0.06 m。可为磁测在边坡深部大变形监测的进一步研究和应用提供参考。
Existing slope deformation monitoring instruments are susceptible to rain, debris flow, rolling stones and other environmental impact, the installation of the instrument is more complicated, and can not monitor the mid-late deformation of deep slope slip. Based on the magnetic field localization theory, the smart rock is made of magnetic substance, the smart rock is arranged in the deep part of the slope, and the deep large deformation monitoring system of the slope is established through the intelligent rock and the full tensor magnetic gradient meter. Based on the magnetic field gradient tensor shrinking and positioning, the intelligent stone is positioned in three dimensions to realize the monitoring of large deformation in the middle and later stages of deep slope. According to the accuracy of magnetic tensor and the gradient of the earth’s magnetic field, the effective monitoring distance is 35 m from the analysis of three-dimensional magnetic flux density and magnetic field gradient. In the magnetic field positioning test, the monitoring accuracy is 0.06 m. It can provide reference for the further research and application of magnetic deformation monitoring in the deep deformation of deep slope.