ANALISIS KUALITAS JARING PANTAU VERTIKAL CANDI BOROBUDUR UNTUK STUDI DEFORMASI

• Main Authors: , AGHUTS SALIM, , Dwi Lestari, ST., ME.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/127081/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=67324
• Institution: Universitas Gadjah Mada

Borobudur is one of the world heritages that should be preserved. Maintaining the temple could be done by monitoring the stability of the soil and construction structure of the temple. Geodetic method has been employed to monitor the vertical stability of the Borobudur temple by measuring vertical position of the monitoring network points periodically using waterpass (leveling). In 2012 instead of using waterpass, trigonometric leveling was applied to measure the height differences between points with some modification on the network geometry. The instrument and network geometry changes could affect the precision of the observed point. This research focused on analyzing the quality and strength of figure of the trigonometric leveling network observed using waterpass and Total Station and also analyzing the vertical displacement at these networks. This study used leveling network data observed in 2011 measured using automatic waterpass Leica Sprinter M-100 and trigonometric leveling data in 2012 measured using Nikon DTM 322 Total Station. Height estimation of the network points was done using least squares adjustment methods using observation model with minimum constraint. Pope�s Tau data snooping was performed with 95 % level of confidence to evaluate the result. Network quality analysis was then undertaken by evaluating the precision of the estimated height and the correlation number between estimated parameters was used to analyze the strength of figure. Furthermore, point displacement analysis was performed using student-t statistical test with 95% level of confidence. The results showed that the average precision of the leveling network in 2011 was 0.003 while the trigonometric leveling in 2012 was 0.029. Based on the height closure error value, the leveling network met the the LAA class while the trigonometric leveling met the LA class. Strenght of figure analysis indicated that in general the correlation value between estimated parameters in leveling network was bigger than Total Station network. Furthermore, the height differences between 2011 and 2012 showed the displacement between -0.010 to -0.099 m, but the statistical test indicated that these displacements were insignificant. It can be concluded that the trigonometric leveling network using Total Station in this study has not meet the required precision for Borobudur deformation study.