Composite shield structure suitable for bad ground construction

A complex stratum and shield technology, applied to mining equipment, earthwork drilling, tunnels, etc., to achieve safe and reliable inspection, broad application prospects, and wide geological adaptability

Active Publication Date: 2009-08-19
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of safe construction of the shield in different strata such as soft soil, weathered rock, uneven soft and hard stratum, sand stratum and sand pebble stratum

Method used

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  • Composite shield structure suitable for bad ground construction
  • Composite shield structure suitable for bad ground construction
  • Composite shield structure suitable for bad ground construction

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Experimental program
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Embodiment Construction

[0029] The present invention is described in detail below with best embodiment:

[0030] refer to figure 1 , a composite shield suitable for complex stratum construction, including a cutter head 1, a shield shell 2, a man cabin 3, a belt conveyor 11, a profiling knife 27, a screw conveyor 14 and an earth bin 42, and the system also includes :

[0031] Composite cutterhead, the cutterhead 1 is a composite cutterhead, which is suitable for soft soil formation construction and hard rock formation construction, and the soft soil layer construction tools and hard rock formation construction tools are respectively installed on the cutter head. replace the tool;

[0032] Three excavation modes, according to different geology, adopt the excavation face stabilization mode of open mode, local air pressure mode or earth pressure balance mode;

[0033] The ballast soil improvement system injects additives into the surface of the cutter head, soil bin or screw conveyor, and uses the rot...

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PUM

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Abstract

The invention provides a compound tunnel shield suitable for construction of complex formation, relating to an architectural construction machinery. The compound tunnel shield comprises a compound cutter head suitable for construction of soft soil formation, hard rock formation, formation with uneven hardness and compound formation with both soft soil and hard rock; 3 excavation modes adopting an open mode, a local atmospheric pressure mode or an excavated surface stabilization mode of an earth pressure balance mode according to different geological characteristics of the geology, and a ground conditioning system; the cutter head is respectively provided with a soft soil layer construction tool and a hard rock layer construction tool, cutters are changed to adapt to different formations in the process of the construction thereof; addition agent is injected into the cutter head surface, a soil chamber or a screw conveyer and the addition agent and muck are mixed by rotary stirring of the cutter head, the soil chamber or the screw conveyer to adapt to different formations through ground conditioning. The invention solves the problem of safe construction of the tunnel shield in soft soil, decomposed rock, formations with uneven hardness, sand layer and sand gravel formation, etc.

Description

technical field [0001] The invention relates to a building construction machine, more specifically, it is a composite soil pressure machine that can adapt to complex strata such as soft soil, weathered rock, uneven soft and hard stratum, sand and sandy pebble stratum. Balance shield. Background technique [0002] my country has a vast territory, and engineering geology and hydrogeology conditions are quite complex. According to the characteristics of my country's geological conditions, shield application technology can be roughly divided into three strata: the weak soil stratum represented by the Shanghai area, and the weathered stratum represented by the Guangzhou area. Rock and strata with uneven hardness and softness, sand and pebble strata represented by the Beijing area. Due to the complex geological conditions, each project should select a suitable shield according to the hydrological and geological conditions of the project. Chinese patent ZL200510130590.0 announces ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/12
Inventor 李建斌韩亚丽张志国陈馈张红星
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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