Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Shield machine and shield construction method applied to upper soft and lower hard composite strata

A composite stratum and shield machine technology, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problems of cutter wear and lack of foresight, and achieve the effect of low loss and reduced wear

Active Publication Date: 2019-07-23
SHANGHAI TUNNEL ENG CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing countermeasures for the construction methods of the upper soft and lower hard strata are measures taken during the tunneling construction process of the shield machine, which are not forward-looking and belong to in-process measures, and the cutter head and cutter will still be worn

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
  • Shield machine and shield construction method applied to upper soft and lower hard composite strata
  • Shield machine and shield construction method applied to upper soft and lower hard composite strata
  • Shield machine and shield construction method applied to upper soft and lower hard composite strata

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] The present invention is applied to a shield machine for upper-soft and lower-hard composite formations, including:

[0028] The cutter head device adopts a full-disc hob, and the cutter head device is equipped with an advanced drill for detecting the karst formation on the shield working line in the upper soft and lower hard composite stratum. The risk can be effectively reduced through advanced drilling, and preparations for construction in special strata with upper soft and lower hard can be done.

[0029] A soil improvement device, the soil improvement device respectively performs soil ...

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 shield tunneling machine and a shield construction method applied to a composite stratum with an upper soft portion and a lower hard portion. The shield tunneling machine comprises a cutterhead device and a soil improving device. Full-cutterhead hobs are arranged on the cutterhead device, and an advanced drill used for detecting a karst stratum located on a shield work line in the composite stratum with the upper soft portion and the lower hard portion is arranged on the cutterhead device. The soil improving device is used for carrying out soil improvement on the hard rock stratum and the soft rock stratum of the composite stratum with the upper soft portion and the lower hard portion in the shield construction process. The karst stratum located on a shield work line in the composite stratum with the upper soft portion and the lower hard portion is detected through the advanced drill arranged on the cutterhead device, then a karst cave is treated, and the problems that mud leakage happens to the karst cave of the karst stratum in the construction process, and tunnel deformation and the like are caused by surface subsidence and the later tunnel operation stage can be avoided. The cutterhead device is arranged to be the full-cutterhead hobs, so that the aims of taking prevention measures in advance, reducing abrasion of the composite stratum with the upper soft portion and the lower hard portion to cutterhead cutters of the shield tunneling machine and reducing loss to be minimum are achieved.

Description

technical field [0001] The invention relates to the technical field of tunnel shielding, in particular to a shield machine and a shield construction method applied to upper soft and lower hard composite formations. Background technique [0002] Shield excavation in complex stratum, i.e. long-distance upper soft stratum and lower hard stratum, may cause the shield machine to shift or get stuck, snake forward, and if the grouting is not timely, it will easily lead to ground subsidence or even subsidence, tunnel segment damage and shield tunneling. Many unforeseen problems such as mechanism damage. In addition, the construction in this stratum will also cause problems such as serious tool wear, difficulty in replacement, and abnormal damage, which will cause tunneling to be blocked. The wear of the cutterhead will reduce the strength and stiffness of the cutterhead and make it impossible to tunnel. All lead to a series of high-risk problems such as damage to the main bearing o...

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 Patents(China)
IPC IPC(8): E21D9/08E21D9/00
CPCE21D9/001E21D9/08
Inventor 薛建忠李峻黄德中王旋东张亮张杰赵叁林袁倩罗立刘传英方志华田瑞端陈纯余伟康朱钦令邵文飞
Owner SHANGHAI TUNNEL ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com