| 摘要 |
PURPOSE: An apparatus for surveying a benchmark using equal distance observation is provided to prevent a positional displacement due to the flow and subsidence of a leveling part, thereby reducing the errors of a benchmark altitude value. CONSTITUTION: An apparatus for surveying a benchmark using equal distance observation includes a bearing pile member (110), a measuring part installing member (120), a leveling part (130), and a measuring part fixing member (140). The bearing pile member is inserted into the ground through strokes. Mortar is injected into the bearing pile so that the bearing pile member is fixed to the ground. The mortar is injected into the measuring part installing member having a mortar injection case (121) so that the measuring part installing member is supported by the ground. A coupling rod (123) at the measuring part installing member protrudes from the lower side of the mortar injection case, and is coupled to the upper side of the bearing pile member. A benchmark (131) on the upper side of the leveling part at the center of the mortar injection case is exposed to the surface of the ground. The measuring part fixing member fixes the leveling part to the mortar injection case so that the leveling part is not moved by injecting the mortar into the mortar injection case. |
