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Hard rock composite TBM (Tunnel Boring Machine) suitable for composite stratum and tunneling mode thereof

A composite stratum and composite technology, applied in underground chambers, shaft linings, tunnel linings, etc., can solve problems that cannot meet the construction requirements of complex strata, and achieve the effect of expanding the scope of geological adaptation, economical and practical, and extensive geological adaptability

Active Publication Date: 2012-02-29
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the engineering geological conditions of soft soil, soft rock, and uneven soft and hard strata in domestic municipal underground engineering geology, this EPB shield and TBM, which only have a relatively single stratum adaptability, can no longer meet the construction requirements of complex strata.

Method used

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  • Hard rock composite TBM (Tunnel Boring Machine) suitable for composite stratum and tunneling mode thereof
  • Hard rock composite TBM (Tunnel Boring Machine) suitable for composite stratum and tunneling mode thereof
  • Hard rock composite TBM (Tunnel Boring Machine) suitable for composite stratum and tunneling mode thereof

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention will be further described:

[0023] Such as figure 1 , figure 2 As shown, a hard rock composite TBM suitable for complex formations includes a cutter head 1 located at the front of the shield body, a front shield 2 connected to the cutter head 1, and a middle shield 6 connected to the front shield 2, and a middle shield 6 connected to the middle shield. The tail shield 8 connected to the shield 6 is characterized in that: the cutterhead 1 is a composite cutterhead, including a cutterhead steel structure 20, on which a wear-resistant panel 21 and a gauge knife 24 and The wear-resistant block 25 on the periphery of the cutter head located next to the gauge knife 24, the wear-resistant panel 21 is provided with a hob 22, a side scraper 23 and a scraper 28, and a hob protection block 27 is arranged around the hob 22 to meet the two-way Side scraper 23 and scraper 28 for rotary excavation; front shield ...

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Abstract

The invention discloses hard rock shield construction equipment which is suitable for a single stratum of soft soil, soft rock, hard rock and the like and is simultaneously suitable for a soft and hard alternate stratum and a transition stratum, particularly silt, clay, powder, sand, gravel, decayed rock stratum. In the invention, two tunneling modes can be realized: an earth pressure balance tunneling mode and an open tunneling mode. When an excavated surface has poor stability or soft soil, a sand stratum and a sand gravel stratum with high water content are excavated, the earth pressure balance tunneling mode is used for construction; and when surrounding rock of the excavated surface can be self-stabilized, the open mode is used for construction when the rock stratum has high stability, particularly, a composite cutter head is used for tunneling. The equipment has extremely strong geological adaptability, is particularly suitable for construction of a soft and hard complex stratum of a municipal metro, and also has low construction interference and is convenient to control; and the overall manufacturing cost is greatly reduced compared with a hard rock tunneling machine.

Description

technical field [0001] Technical Field The present invention belongs to the field of shield tunneling and TBM engineering technology, and mainly relates to a tunnel construction engineering machine, specifically a machine that is suitable for single formations such as soft soil, soft rock, and hard rock, as well as for alternate hard and soft formations, transitional Formation hard rock composite TBM construction equipment. Background technique [0002] In China, which is known as the World Geological Museum, stratum engineering and hydrogeology are complex. For many underground municipal projects, the construction interval is dominated by one kind of geology, and there are other strata and complex stratum geology. Shield application technology can be roughly divided into three types of formations, soft formations mainly represented by Shanghai and Zhengzhou; sand, sandy pebble formations and weathered rocks and other soft and hard formations mainly represented by Beijing an...

Claims

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Application Information

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IPC IPC(8): E21D9/08E21D9/12E21D11/04E21D9/04
Inventor 韩亚丽李建斌
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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