HUANG Shengxiang, LUO Li. Stability Analysis and Results of the Landslide MonitoringDatum in the Three Gorges Reservoir Area[J]. Geomatics and Information Science of Wuhan University, 2014, 39(3): 367-372. DOI: 10.13203/j.whugis20120019
Citation: HUANG Shengxiang, LUO Li. Stability Analysis and Results of the Landslide MonitoringDatum in the Three Gorges Reservoir Area[J]. Geomatics and Information Science of Wuhan University, 2014, 39(3): 367-372. DOI: 10.13203/j.whugis20120019

Stability Analysis and Results of the Landslide MonitoringDatum in the Three Gorges Reservoir Area

Funds: The National Natural Science Foundation of China,No.41274020.
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  • Author Bio:

    HUANG Shengxiang,professor,PhD supervisor,specializes in the research and education in high precision deformationmonitoring and GNSS engineering application.

  • Received Date: January 14, 2013
  • Revised Date: March 04, 2014
  • Published Date: March 04, 2014
  • Objective Focusing on the limitations of conventional methods,a new method for testing the stabilityof landslide monitoring network for long and narrow areas was studied.The process was divided intothree steps:Firstly,the relatively stability points were identified in the ITRF frame;Secondly,thereference points displacement was calculated in the local reference frame as defined by relatively stabilepoints;Thirdly,a displacement significance test was used to analyze the stability of these referencepoints.Using GPS observations(2008-2011)of a landslide monitoring network in the Three Gorgesreservoir area,the stability of all reference points was tested:finding moved reference points duringthree years of high water impoundment,with a horizontal displacement of the moved reference pointsof more than 4cm,with a maximum of 79.4cm.The displacement direction of unstable referencepoints was physically inspected along with the geographical environment,revealing that they wereconsistent with the results obtained from the proposed testing method.
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