Cross-river leveling measuring method

Abstract

The invention discloses a cross-river leveling measuring method. The method comprises the following steps: setting up cross-river fields, and respectively setting up instrument sites and markers of cross-river benchmarks on both banks; providing an electronic total station on each instrument site of two banks, and providing a prism on the cross-river benchmark; observing the benchmarks on the samebank; observing the benchmarks on the opposite bank; exchanging the electronic total stations on two banks to observe; and after checking tolerance and eliminating observation values of the over-limit height difference, taking the median of the opposite observation height difference on two banks of two electronic total stations as a cross-river height difference measuring result. The invention relates to the field of controlling and measuring. The cross-river leveling measuring method saves cumbersome works of measuring high instrument and high target, avoids the measuring errors of high instrument and high target, improves the efficiency and the precision of the results of the cross- river leveling measuring, facilitates an operator to operate and the automation of the field measuring, and is beneficial to control the quality of the field observation.

Description

technical field [0001] The invention relates to the field of elevation control measurement, in particular to a cross-river leveling measurement method, which is suitable for carrying out elevation transfer measurement across rivers, lakes and seas by using a total station according to the triangular elevation method. Background technique [0002] In the process of cross-river leveling using the triangular elevation method, it is usually necessary to manually measure the height of the measuring station instrument and the height of the target. Since the instrument or target is generally placed on a tripod or an observation pier using a triangular base, the work of measuring height is cumbersome and accurate. It is not high, thus reducing the height difference accuracy of cross-river leveling; and according to the current national leveling standards - "National Leveling Standards for First and Second Class" (GBT12897-2006), the target is measured by the Invar leveling rod, nearl...

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Problems solved by technology

[0002] In the process of cross-river leveling using the triangular elevation method, it is usually necessary to manually measure the height of the measuring station instrument and the height of the target. Since the instrument or target is generally placed on a tripod or an observation pier using a triangular base, the work of measuring height is cumbersome and accurate. It is not high, thus reducing the height difference accuracy of cross-river leveling; and according to the current national leveling standards - "National Leveling Standards for First and Second Class" (GBT12897-2006), the target is measured by the Invar leveling rod, nearly The ruler uses the total station to aim at the ruler reticle and read directly, and the far ruler adopts the method of manually placing the target plate on the ruler integer reticle for observation and reading. This method does not need to directly measure the height of the instrument and the target height, but uses Invar It is inconvenient to work the leveling rod in the field, and it is not easy to realize the automation of field measurement due to the method of reading the leveling rod, which is not conducive to controlling the quality of field observation and the observation efficiency is low

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