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Method for tunnel shaft reversed coordinate transmission shaft plumbing measurement

A measurement method and shaft technology, applied in the directions of measuring device, height/horizontal measurement, surveying and navigation, etc., to achieve the effect of high precision, strong practicability, and easy plane transmission and elevation transmission measurement of deep shafts

Active Publication Date: 2017-06-27
CHINA RAILWAY 24TH BUREAU GRP ZHEJIANG ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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-point measurement method, which is convenient to bury points at the bottom of the shaft, occupies a short time in the shaft hole, and has high precision. 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, and can ensure that the laser of the laser plumb meter is irradiated vertically upwards

Method used

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  • Method for tunnel shaft reversed coordinate transmission shaft plumbing measurement
  • Method for tunnel shaft reversed coordinate transmission shaft plumbing measurement
  • Method for tunnel shaft reversed coordinate transmission shaft plumbing measurement

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] Embodiment, tunnel shaft reverse coordinate transfer projecting point measurement method, see figure 1 , figure 2 , image 3 shown. There is an inverted arch vertical hole on the bottom surface of the vertical shaft inverted arch at the bottom of the shaft where the control point is buried, and a bracket S1 is arranged in the inverted arch vertical hole, and a spherical groove S4 with openings on the upper and lower sides is arranged on the bracket. , the rolling ball S3 is installed 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 a hanging ball is fixed vertically downward on the rolling ball at the opening end of the spherical groove. Rod S5, the gravity ball S6 is fixed at the lower end of the boom, and the center line of the laser...

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Abstract

The invention discloses a method for tunnel shaft reversed coordinate transmission shaft plumbing measurement and belongs to the technical field of deep shaft coordinate transmission shaft plumbing construction. The measurement method facilitates shaft bottom embedding of point location, is short in shaft hole occupation time, high in precision, simple to operate and high in practicality and has easiness in pile anchoring, deep shaft plane transmission and height transmission measurement are performed easily, and the method is not easily subjected to influences of airflow and dripping in a shaft. The method comprises a step (1) of performing instrument selection and instrument checkout prior to shaft plumbing; a step (2) of setting reversed transmission shaft plumbing of a laser plummet apparatus; and a step (3) of performing total station shaft elevation reversed transmission processing.

Description

technical field [0001] The invention relates to the technical field of projecting point construction through coordinate transmission of deep shafts, in particular to a point 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 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 to drop d...

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Application Information

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IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 靳炳强张俊彪魏先斌武金龙王普
Owner CHINA RAILWAY 24TH BUREAU GRP ZHEJIANG ENG CO LTD
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