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Construction measurement method of projecting points by reverse coordinate transfer of tunnel shaft

A technology for construction surveying and vertical wells, which is applied in the directions of surveying devices, height/horizontal surveying, surveying and navigation, etc., to achieve the effects of short occupation time of the well, strong practicability and fast measurement speed

Active Publication Date: 2019-04-23
CHINA RAILWAY 24TH BUREAU GRP ZHEJIANG ENG CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the above-mentioned deficiencies existing in the existing vertical shaft plane connection measurement method, and provides a tunnel vertical shaft reverse coordinate transfer point-casting construction measurement method. , simple operation, fast measurement speed, strong practicability, easy to bury piles, easy to measure the plane transfer and elevation transfer of deep shafts, not easily affected by airflow and dripping water in the shaft, users can easily know whether the wellhead is tilted, and underground operators can easily know Laying point of laser plumb meter

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  • Construction measurement method of projecting points by reverse coordinate transfer of tunnel shaft
  • Construction measurement method of projecting points by reverse coordinate transfer of tunnel shaft
  • Construction measurement method of projecting points by reverse coordinate transfer of tunnel shaft

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] Embodiment, tunnel shaft reverse coordinate transfer projecting point construction measurement method, see Figure 1-Figure 4 As shown, there is an inverted arch vertical hole on the bottom surface of the vertical shaft inverted arch at the control point buried at the bottom of the shaft, and a bracket S1 is arranged in the inverted arch vertical hole, and a spherical surface with openings on the upper and lower sides is arranged on the bracket. Groove S4, there is a rolling ball S3 in the universal rotation in the spherical groove, the laser plumb instrument S2 is fixed on the rolling ball at the opening end of the spherical groove, and is fixed vertically downward on the rolling ball at the opening end of the spherical groove There is a suspension rod S5, and a gravity ball S6 is fixed at the lower end of the suspension rod, and the laser cente...

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Abstract

The invention discloses a measurement method for tunnel shaft well reverse coordinate transmission point setting construction, and belongs to the technical field of deep shaft coordinate transmission point setting construction, the measurement method facilitates embedding of points at the bottom of a well, has the advantages of short well hole occupation time, high precision, simple operation, high measurement speed, strong practicability, pile anchoring easiness, deep shaft well plane transmission easiness and easy elevation transmission and is less prone to being affected by air flows and dropping water in the shaft well. The method includes the following steps: (1) instrument selection and instrument calibration before point setting; (2) setting of reverse transmission point setting of a laser plummet apparatus; and (3) shaft well elevation reverse transmission treatment of a total station.

Description

technical field [0001] The invention relates to the technical field of construction of deep shaft coordinate transmission and projection points, in particular to a construction measurement method for reverse coordinate transmission of tunnel shafts. Background technique [0002] In tunnel construction, in order to speed up the construction progress and ventilation, long tunnels, especially urban subway tunnels, often use the method of adding vertical shafts to increase the construction face to speed up the construction progress. The coordinates, direction and elevation in the ground control network are transmitted to the downhole through the shaft, so that the coordinate system of the underground control network and the control network on the ground are unified. Therefore, the measurement of shaft transfer connection has become the primary problem in construction. [0003] At present, the method of vertical shaft plane connection measurement mainly adopts the vertical shaft...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 靳炳强王普张俊彪魏先斌武金龙
Owner CHINA RAILWAY 24TH BUREAU GRP ZHEJIANG ENG CO LTD
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