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Precise levelling method by total station

A total station and leveling technology, applied in the direction of measuring devices, height/level measurement, instruments, etc., can solve the problems of slippery tunnels, heavy workload, danger, etc., to reduce workload, reduce risks, and improve measurement accuracy Effect

Inactive Publication Date: 2010-03-31
SHANGHAI MECHANIZED CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of construction conditions, the suspension of the steel ruler will affect the construction, and the tunnel is relatively slippery, so it is dangerous to measure, and the workload of this method is relatively large

Method used

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  • Precise levelling method by total station
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  • Precise levelling method by total station

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Embodiment Construction

[0027] Attached below Figure 1-3 A preferred embodiment of the method of the present invention will be described in detail.

[0028] Such as image 3 In the method of measuring the height shown, measure the height between the two points A and B, so as to locate the forward direction of the shield machine. Among them, A and B points are equipped with observation piers 3, E is a shield machine, and C and D points are follow-up to-be-measured points.

[0029] Step 1: Build a fixed observation pier at point A and point B respectively, and place figure 2 The shown total station 2 is set on the observation pier 3 at point A, and the figure 1 The shown prism 1 is set on the observation pier 3 at point B, and the prism 1 and the total station 2 are respectively leveled.

[0030] Step 2: Use the positive mirror and prism 1 of the total station 2 to measure the height difference h between points A and B for the first time AB1 .

[0031] Step 3: Rotate the total station 2 along t...

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Abstract

The invention provides a precise levelling method by a total station, comprising the following steps: 1) arranging the total station on a first point, arranging a prism on a second point with altitudedifference with the first point, and respectively levelling the total station and the prism; 2) measuring the altitude difference hAB1 between the first point and the second point for the first time;3) exchanging the positions between the total station and the prism, and respectively levelling the total station and the prism; 4) measuring the altitude difference hBA1 between the second point andthe first point; and 5) calculating the measuring average value. The invention reduces influence on measurement by construction conditions, lowers measurement dangers, improves measurement precisionand lowers workload.

Description

technical field [0001] The invention relates to an engineering measurement technology, which is especially suitable for underground engineering measurement such as tunnels, subways, underground mine tunnels, etc., and is a method for measuring precision levels by using a total station. Background technique [0002] Tunnel penetration error includes plane penetration error and elevation penetration error. According to the specification requirements: both plane penetration error and elevation penetration error should be controlled within ±50mm, so elevation penetration error is an important link in tunnel penetration measurement. It is transmitted to the underground according to the known ground elevation control points. As the tunnel continues to advance, the elevation is measured into the tunnel as the basis for the elevation control of shield tunneling. The accuracy of the measured benchmarks directly affects the elevation of the tunnel and the final penetration of the tunn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
Inventor 王斌张朝彪戴建雄孔利明唐建忠俞靓
Owner SHANGHAI MECHANIZED CONSTR GRP