The present invention relates to ground subsidence measuring means generated due to earthquake or ground work. In particular, the sediment measuring means using the surface sedimentation system, the surface sedimentation system after the survey point (Point) is installed on the surface by performing a regular survey, grasping the sedimentation behavior of the ground due to tunnel excavation or fill Therefore, it is installed for the purpose of preventing the risk factors that may be affected by the surface settlement.
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