Double-shield TBM

A technology of double shields and cave walls, applied in wellbore lining, tunnel lining, underground chamber, etc., can solve the problem of high cost of prefabricated segments, difficult to guarantee the forming effect, and inability to flexibly meet the needs of various supporting forms and tunnels. Design requirements, etc.

Pending Publication Date: 2018-08-14
CHINA RAILWAY CONSTR HEAVY IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the traditional double-shield TBM equipment has great constraints on the choice of construction method, and cannot flexibly meet the n...

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] The core of the present invention is to provide a double-shield TBM, which can not only be assembled with segments for support, but also can be used for anchor-spray support without assembling segments.

[0030] Please refer to figure 1 and figure 2 , figure 1 Schematic diagram of the segment assembly mode of the double-shield TBM provided by the present invention; figure 2 It is a schematic diagram of the segmentless assembly mode of the double-sh...

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Abstract

The invention discloses a double-shield TBM which comprises a front shield, a telescopic shield, a tight-supporting shield and a tail shield which constitute a main frame. One end of a main pushing oil cylinder is connected to the tight-supporting shield. The double-shield TBM further comprises a plurality of stabilizers, a segment assembling machine, a steel arch frame mounting device, an anchorrod drilling rig and a concrete spraying device. The stabilizers are used for fixing the positions of the front shield and a cutterhead during step-changing operation and arranged in the front shield,can stretch out of the front shield and are supported with a tunnel wall; the segment assembling machine is used for assembling segments carried by a segment hoisting system, and arranged on the mainframe; the steel arch frame mounting device is used for mounting a steel arch frame, arranged on the segment assembling machine and located on the rear portion of the segment assembling machine; theanchor rod drilling jig is used for conducting temporary anchor rod supporting on the tunnel wall and connected with the steel arch frame mounting device and a control device; and the concrete spraying device is used for spraying concrete towards the tunnel wall and arranged on a track of the main frame. The double-shield TBM has a segment mode and an anchor rod supporting mode and is wider in application range.

Description

technical field [0001] The invention relates to the technical field of excavation equipment, and more specifically, relates to a double-shield TBM. Background technique [0002] The traditional double-shield TBM equipment provides two excavation modes for construction, which are respectively applied to different surrounding rock conditions. When changing steps in the two excavation modes, it is necessary to push the segment through the auxiliary thrust system to provide step-changing reaction force. Therefore, no matter the surrounding No matter what the rock condition is, the segments need to be assembled before excavation. However, in the section where the double-shield mode can be used for excavation, the surrounding rock is relatively good, and the use of segment support will cause "over-support". The tunnel section may not have final support, and it can also meet the design requirements for tunnel water delivery. In addition, due to the segmental structural design of ...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D11/08E21D11/10E21D11/18E21D20/00
CPCE21D9/0607E21D11/08E21D11/10E21D11/18E21D20/003
Inventor 李超毅程永亮杨佐斌刘峰侯秉军秦鹏翔刘绍宝彭正阳李深远
Owner CHINA RAILWAY CONSTR HEAVY IND
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