Measuring method for establishing equipment installation reference in stack pits

Abstract

The invention discloses a measuring method for establishing the equipment installation reference in stack pits. The method uses a measuring system consisting of an optical cultellation instrument, a precise level instrument and two precise electronic transit instruments for completing the transfer of the equipment installation reference of pack containers and the like. The method comprises the following steps: precisely transferring the stack pit center reference point O and the north direction N reference point to corresponding visible positions on the ground; establishing reference marking points in three orientations of the east direction E, the south direction S and the west direction W on the stack pit; forming a high-precision measurement level reference plane; transferring the orientation reference marking points to proper positions at the upper end of the stack pits; and confirming the equipment installation reference elevation points on hall wall surfaces. The invention uses the measurement technical method of an electronic transit instrument industrial measuring system, ensures the stack container equipment installation precision, and avoids the error installation caused by overlarge installation reference errors, so the stack container equipment installation quality is ensured, and in addition, the safer effect can be obtained.

Description

technical field [0001] The invention relates to a measurement technique method during the installation process of engineering equipment, in particular to a measurement method for establishing the installation reference of similar stack container equipment in a pile pit. Background technique [0002] figure 1 and figure 2 It is a plan view of the pile pit. The pile pit is cylindrical, with a diameter of about 10m and a depth of about 12m. Weld two cylinder sections, and finally install the welding cone top cover. The installation process must be accurately aligned with the azimuth datum and elevation. In order to establish a high-precision installation datum of the stacking container in the pile pit to ensure the installation accuracy requirements of the elevation and azimuth of each component during the stacking container installation process, it is necessary to measure the high-precision installation datum Technical method. [0003] The measurement method usually used ...

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Problems solved by technology

[0008] 1. Since the measuring station B is affected by the leveling and ranging accuracy of the total station, the equipment installation reference point and the equipment installation reference elevation point are transferred relative to the distance range of more than 10 meters in the vertical direction. The measured north direction N 上 , eastward E 上 , Southbound S 上 , Westward W 上 The error of the four azimuth reference mark points and the error of the equipment installation reference elevation b is about 3mm, which cannot meet the requirement that the error of the relevant azimuth reference and the elevation installation reference during the installation of stacking containers and other equipment is not greater than 1mm

[0009] 2. Since the total station of measuring station D must be erected in the center of the pile pit, a bridge with good rigidity is required to span the upper end of the pile pit. When the operator operates on the bridge, the elastic deformation of the bridge will cause the instrument to change and cause measurement errors; at the same time , there are safety risks for personnel and equipment during operation

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