Tunnel underground excavation pipe shed guide pipe drilling construction precision control method

A technology of precision control and guide pipe, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., to achieve the effect of effective control of precision and guarantee of integrity

Pending Publication Date: 2022-06-24
CHINA FIRST METALLURGICAL GROUP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for controlling the drilling accuracy of guide pipes in tunnel excavation pipe sheds. This method can fully solve the problems and difficulties in the construction accuracy control of guide pipe drillings.

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
  • Tunnel underground excavation pipe shed guide pipe drilling construction precision control method
  • Tunnel underground excavation pipe shed guide pipe drilling construction precision control method
  • Tunnel underground excavation pipe shed guide pipe drilling construction precision control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The present embodiment is a method for controlling the construction precision of the drilling of the guide pipe of the tunnel excavation pipe shed. The first part is the construction part of the guide wall, such as Figure 1-3 As shown, this part is mainly composed of guide pipe 1, I-beam 2 and some fixed steel bars 3, etc. After pouring is completed, a guide wall is formed, and its function is to provide guide positioning holes for the later construction of the pipe shed to ensure the construction process of the pipe shed. The second part is mainly about the control method of drilling construction accuracy, such as Figure 4-6 As shown, it mainly controls the vertical and horizontal direction precision of the tube shed tube 4 driven by the laser line casting instrument 5, so as to ensure the effective precision in the construction process of the advanced large tube shed. If the node position of the device is not specified, it shall be connected by welding.

[0039] B...

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 tunnel underground excavation pipe shed guide pipe drilling construction precision control method. The method comprises the following steps that S1, a guide wall is installed; s2, a working platform is erected, a drilling machine is in place, and it is ensured that the axis of a drilling rod of the drilling machine is matched with the axis of an orifice pipe; s3, drilling is conducted, specifically, the height of a drilling machine platform is determined according to the adjustable range of a drilling machine and the drilling sequence, and due to the fact that the drilling sequence of the drilling machine is conducted from the high hole site to the low hole site, the position of the platform is gradually lowered from top to bottom correspondingly; s4, auxiliary positioning is conducted through a laser demarcation device, deviation adjustment is conducted in the drilling process of the pipe roof pipe, and one-time positioning adjustment is conducted on a section of pipe roof pipe to be drilled; s5, a support is adjusted, and the drilling deviation of the pipe roof pipe is adjusted by adjusting the support; and S6, a stop-grouting plug is installed. The problem can be effectively solved by adopting a method for assisting precision control through the laser demarcation device, and the overall precision when the pipe shed pipe is drilled into the guide pipe is guaranteed.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a method for controlling the construction accuracy of a guide pipe hole in a tunnel digging pipe shed. Background technique [0002] The advanced large pipe shed is an advanced supporting structure during shallow burial and underground excavation in underground structural engineering. Its essence is to pre-drill and install thick-walled steel pipes with a large moment of inertia on the buried arc of the lining arch ring of the underground tunnel or structural project to be excavated to play a temporary advanced supporting role to prevent soil collapse and The surface subsides to ensure the safe operation of the excavation and subsequent support processes. During the construction of the existing pipe shed method, the pipe shed often deviates during the drilling process, so that the drilling length of the pipe shed at one time is limited. [0003] At present, the...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/14E21D11/10E21D11/00
CPCE21D11/14E21D11/10E21D11/006
Inventor 王佳源龚俊徐攀雷文浩陈大为
Owner CHINA FIRST METALLURGICAL GROUP
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