A Study On SAA Measurement Technology And Its Application In Slope Monitoring

With the increasing of engineering activity and the expansion of its scale,landslide hazard which is triggered by slope instability becomes a growing issue.Slope deformation monitoring is an essential means of slope stability evaluation,which is also an important means of warning of landslide prediction.In recent years,In order to meet the needs of the slope engineering monitoring,a new slope deformation monitoring technology that array displacement measurement system has been developed.This paper on the basis of array displacement measuring deformation monitoring technology and slope deformation characteristics,carries out research on the array displacement measurement technology.We design PVC pipe three-point bending load test,beam beams vibration test,slope excavation and loading test,analyzing the measurement results of array displacement measurement system and its application to the slope deformation monitoring,and achieve the following results:(1)This paper summarizes the research status of slope deformation monitoring,introduces the fundamental principle,characteristics,and describes the advantages of adopting array displacement measurement technology for slope deformation monitoring.(2)According to the slope deformation characteristics,this paper designs PVC pipe three-point bending test.We used dial indicator,distributed fiber optic sensing technology and array displacement measurement technique to measure the deformation,and verify the reliability of the array displacement meter.(3)We design Beam beam vibration test model,and comparative analysis the measurements of fiber grating displacement meter and array displacement meter to verify feasibility of the array displacement meter for vibration measurement.(4)We Design indoor foundation pit excavation model,to simulate slope excavation and loading test.We use the array displacement meter to monitor displacement,and analyze the feasibility of the array displacement meter for the slope deformation measurements.Research results of this paper show that array displacement measurement technique as a new slope monitoring technology,has broad application prospects in slope monitoring.