Two-instrument simultaneous measuring method for increasing leveling precision

Abstract

The invention relates to a two-instrument simultaneous measuring method for increasing leveling precision, which comprises the steps of: selecting a measuring technician, a leveling ruler, a ruler pad and a leveler; laying branch leveling lines; arranging a rearview ruler, a leveler and a foresight ruler; respectively erecting one leveler by two viewers; reading an indication of the rearview ruler; recording; rereading the indication of the foresight ruler; calculating altitude difference; checking if an error exists in the indications read by the two viewers; if the error exists, rereading and recording, and then reading the indications of the foresight ruler by the two viewers and calculating the altitude difference till the altitude difference is the same; respectively recording the indications in a manual; calculating the altitude difference of the indication of the rearview ruler and the indication of the foresight ruler; repeating the steps for performing a second measuring station; measuring along a leveling line direction in turn till completely measuring all the branch leveling lines to a target leveling point; calculating the altitude difference delta h and the algebraic sum sigma delta h of all the measuring stations; and judging the relative height of the altitude HA of a known leveling point and the altitude HB of an unknown leveling point. According to the two-instrument simultaneous measuring method, the labor intensity of the measuring technician is reduced and the speed of engineering progress is increased.

Description

technical field [0001] The invention relates to a leveling survey. In particular, it relates to a simultaneous measurement method of two instruments for improving leveling accuracy. Background technique [0002] The current common leveling method is exactly one person to set up the leveling instrument and read, one person to record and calculate the height difference, and two people to support the leveling rod. Since one person observes the scale on the leveling rod and reads the measurement, there is no process of checking whether the reading is correct or not, and it is impossible to know whether the reading is correct or not. The leveling routes laid out in the metallurgical industry are generally branch leveling routes, and there is no joint measurement at the end In order to check the measurement results and improve the accuracy of the observation results, the State Bureau of Surveying and Mapping stipulates that a single leveling route must be measured round-trip, and...

AI Technical Summary

Problems solved by technology

Since one person observes the scale on the leveling rod and reads the measurement, there is no process of checking whether the reading is correct or not, and it is impossible to know whether the reading is correct or not. The leveling routes laid out in the metallurgical industry are generally branch leveling routes, and there is no joint measurement at the end In order to check the measurement results and improve the accuracy of the observation results, the State Bureau of Surveying and Mapping stipulates that a single leveling route must be measured round-trip, and the total length of the route should be limited. In general topographic surveying, it cannot over 4KM

Applying the current measurement method, often after a round-trip measurement is completed, it is found that the error of the previous measurement data is relatively large compared with the return measurement data, and the accuracy of the observation is not high. It can be said to be an obvious error, but it cannot be checked out which one is Errors at the station, such observation results cannot meet the accuracy requirements of the project. Therefore, re-measurement is necessary. If the length of the leveling line is too long, re-observation will definitely waste a lot of time and personnel, and increase the number of surveyors. The labor intensity will also slow down the progress of the project

Therefore, the current leveling method cannot meet the needs of the rapidly developing industry.

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