INDICATOR OF UNDERWATER MEASURING POINT AT EMBANKMENT

摘要

The present invention relates to a method for installing an underwater survey point indicator and an underwater survey point indicator at a time of a low water protection project, and more particularly, to an underwater survey point for indicating an installation position of an assoblock to be installed underwater. By instructing on land, it is possible to install the underwater survey point indicator at the correct position so that the construction of the reservoir protection work can be carried out precisely.;The method for installing the underwater survey point indicator at the time of construction of the reservoir is in the method for installing the indicator at the underwater survey point during the construction of the reservoir; An underwater survey point that calculates the installation length from the vertically elevated water surface of the underwater survey point A to the land survey point B, and displays the land survey point B at the calculated surveyed point of the land. Surveying and terrestrial survey point display step (first step); After adjusting the length of the underwater survey point indicator 100 to the length of the vertically elevated surface of the underwater survey point (A) and the length of the land survey point (B), the land survey point (B) displayed in the first step Survey point indicator installation step of installing the survey point indicator (100) horizontally so that the distal end of the survey point indicator (100) to match the point on the vertically elevated surface of the underwater survey point (A) ); A survey point indicating step (3), in which the weight 50 suspended from the front end of the survey point indicator 100 is vertically lowered into the water to indicate the survey point; It is characterized in that it consists of a survey point indicator installation step (fourth step) which displays an underwater survey point A by installing an indicator on the bottom surface of the water indicated by the weight 50.;In addition, the underwater survey point indicator, in the construction of a submerged survey point indicator for indicating the underwater survey point during low water safety work; The support 11 is installed perpendicularly to the lower end of the distal end and formed in a T-shape, and the main winding 10 having the wind winding winder 12 installed above the distal end is fixedly installed horizontally in front of the main body 10, Base bar 20 of a predetermined length having a horizontal plane 21 is installed on the upper surface and the slide groove 22 is formed in the inner longitudinal direction: as it is freely installed in front of the slide groove 22 of the base bar 20, the position Slide bar 30, which is capable of adjusting the inlet and out position by the fixing means 32, and a wire guide roller 31 is installed at the tip end thereof. The slide bar 30 is installed below the main body 10 to adjust the height of the underwater survey point indicator 100. Height adjustment port 40 to adjust up and down: It is characterized by consisting of a weight (50) to indicate the underwater survey point (A) hanging on the tip of the wire (51) wound on the winder (12).