Slope displacement monitoring can visually reflect the slope deformation, and reasonable setting of monitoring points is the premise for good monitoring results. At present, the slope displacement monitoring site mostly rely on the experience and the engineering analogous method, which are lack of quantitative analysis. According to the finite difference strength reduction method, get the displacement of distributed monitoring point with the changing of strength reduction coefficient, analyse the rule between the displacement of distributed monitoring point and reduction coefficient, and obtain the grey pertinence between them. Give the idea that optimizing the monitoring points based on gray correlation degree and actual condition.
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