Method for measuring tunneling construction precision at two ends of extra-long tunnel

A technology for precision measurement and tunneling, which is applied in measurement devices, measurement instruments, radio wave measurement systems, etc., and can solve problems such as affecting the accurate penetration of tunnels and increasing penetration errors of tunnels excavating in opposite directions.

Active Publication Date: 2019-03-26
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the technical problems in the prior art that conventional measurement means cannot accurately retest and check the plane control network at both ends, which leads to an increase in the penetration error of the opposite excavation of the tunnel and directly affects the accur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for measuring tunneling construction precision at two ends of extra-long tunnel
  • Method for measuring tunneling construction precision at two ends of extra-long tunnel
  • Method for measuring tunneling construction precision at two ends of extra-long tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Huangzhukou Tunnel is an extra-long tunnel on the Hezhou-Bama Expressway in Guangxi. It is located about 200m south of Huangzhukou Village, Wenzhu Town, Zhaoping County, Hezhou City. The exit is located in the east of Guanshetun, Wachong Village, Xihe Town, Mengshan County, Wuzhou City. At about 100m, it is a separate over-the-ridge super-long tunnel. The overall direction of the tunnel is about 266°. The start and end pile numbers of the right tunnel are YK68+925~YK73+682. The design length is 4757m, and the maximum buried depth is about 310.593m (YK72+740); The starting and ending stakes of the left tunnel are ZK68+930.6~ZK73+695, the design length is 4764.4m, and the maximum buried depth is about 300.602m (at ZK72+720). method for measurement, the specific steps are as follows:

[0042] (1) Analysis of the status quo of re-measurement points

[0043] Before the retest of the control network, the on-site survey is first carried out to check the integrity of the marke...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for measuring tunneling construction precision at two ends of an extra-long tunnel. The method comprises the following steps: rechecking and encrypting mapping base points arranged in the whole route according to the present coordinate control point and benchmark data; using double-frequency receivers for collecting field data of horizontal control points, and synchronously starting up and collecting satellite signals under the condition of strictly centering and leveling; synchronously observing at different horizontal control points by multiple receivers, moving to other horizontal control points for synchronously observing after finishing the synchronous observation in a period of time, and forming a synchronous pattern while synchronously observing at each time. During the measuring process, different synchronous patterns are generally connected by a plurality of common points; the whole GPS network is formed by the synchronous patterns; measuring points are uniformly distributed in a control network, have a mutual restraining effect to the whole control network and can effectively increase the measuring precision.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a method for measuring the construction accuracy of excavation at both ends of an extra-long tunnel. Background technique [0002] Due to the long line of tunnels in mountainous areas, passing through high mountains, and large terrain fluctuations, during the excavation construction at both ends, it is impossible to accurately retest and check the plane control network at both ends according to conventional measurement methods, which may lead to tunnel excavation in opposite directions. The increase of the error directly affects the accurate penetration of the tunnel. [0003] Therefore, it is important to study the retesting and checking methods of the planar control network at both ends of the tunnel to ensure the high precision and high reliability of the control network, ensure the consistency of the tunnel and the line position, and improve the measurement accura...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01C15/00G01S19/31
CPCG01C15/00G01S19/31
Inventor 覃勇然黄志增周妤莲李俭全盘海锋李赞韦俏妃刘德义梁榜达杨晓生杨永健
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap