A measuring method of cpⅲ planar net

Abstract

The invention provides a CP III plane net measuring method. The method includes the steps that firstly, a total station is erected between two CP III points of a left line, CP III prisms are inserted in the CP III points for measurement, wherein each of a front line, a rear line, the left line and a right line of the total station is provided with n pairs of CP III points, namely 2n CP III points in total; secondly, after measurement of the station is finished, the most tail m prisms of the left line and the most tail m prisms of the right line are moved to the forefront side in the advancing direction of measurement, the total station is moved to the right line from the left line and advances to the position between a pair of spaced CP III points of the right line, a station is set again for measurement, and the total 2n CP III points in n pairs in each of the front line and the rear line are measured; thirdly, after measurement of the station is finished, the most tail m prisms of the left line and the most tail m prisms of the right line are moved to the forefront side in the advancing direction of measurement again, the total station is moved to the left line from the right line again and advances to the position between a pair of spaced CP III points of the left line, a station is set again for measurement, and the total 2n CP III points in n pairs in each of the front line and the rear line are measured; and the steps are repeated in this way, so that measurement of each CP III point is achieved. By the adoption of the measuring method, the requirement for the measuring accuracy of a rail can be met, and observation can be convenient.

Description

technical field [0001] The invention belongs to the technical field of CPⅢ measurement of maglev rail transit, and more specifically relates to a CPⅢ planar network measurement method. Background technique [0002] In the process of my country's high-speed railway construction, the precision engineering measurement and control network has formed a system of "level deployment and level-by-level control", realizing the "three-in-one" precision measurement and control network in the survey, design, construction and operation stages. In the "High-speed Railway Engineering Survey Specifications" (TB106601-2009), the track control network CPⅢ is a plane and elevation control network laid along the line, which is generally measured after the completion of the offline project, and is the benchmark for track laying, fine adjustment, and operation and maintenance. For high-speed railways with a speed of 200 kilometers per hour and above, the CPⅢ measurement of the track control networ...

AI Technical Summary

Problems solved by technology

Although the left and right lines such as the bridge embankment are continuous and flat, and have the site conditions for erecting instruments, due to its 24-hour operation, the skylight time is short or there is no skylight time, and the measurement of the station between the left and right lines is dangerous and difficult.

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