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A kind of hollow TBM cutterhead, TBM and construction method for pilot hole expansion and excavation for inclined shafts

A hollow and cutter head technology, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problems of low construction efficiency of pilot tunnel expansion and excavation, and achieve the effects of reducing safety hazards, reducing disturbances, and improving efficiency

Active Publication Date: 2022-04-29
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a hollow TBM cutterhead, a pilot tunnel expansion TBM for inclined shafts and a construction method, which solves the problem of low construction efficiency of pilot tunnel expansion in the prior art

Method used

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  • A kind of hollow TBM cutterhead, TBM and construction method for pilot hole expansion and excavation for inclined shafts
  • A kind of hollow TBM cutterhead, TBM and construction method for pilot hole expansion and excavation for inclined shafts
  • A kind of hollow TBM cutterhead, TBM and construction method for pilot hole expansion and excavation for inclined shafts

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Embodiment 3

[0028] Embodiment 3, a kind of construction method of expanding the TBM with the pilot tunnel of inclined shaft as described in Embodiment 2: the steps are as follows: S1, when the TBM breaks the rock and digs, the double support shoe mechanism 103 and the bottom support 105 are supported on the cave wall , the hollow channel 2 of the hollow TBM cutter head 100 is aligned with the guide hole, the hollow TBM cutter head 100 rotates, and under the action of the propulsion force of the propulsion system (propelling oil cylinder), the hob on the hollow TBM cutter head 100 penetrates into the rock for crushing rock; the slag produced in the excavation process enters the guide hole under the action of the inner slag scraper 205 on the inner wall of the hollow passage 2 and the outer slag scraper 201 on the outer edge of the cutter head body 1, and realizes slag removal from the guide hole, and the cutter head A central slag scraper is set at the center, and the TBM discharges slag fr...

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Abstract

The invention discloses a hollow TBM cutter head, a TBM for expanding and digging a pilot hole for an inclined shaft, and a construction method. The TBM for expanding and digging a pilot hole for an inclined shaft includes the hollow TBM cutter head and a main beam connected to a shield body And the main drive, the main drive is connected with the hollow TBM cutter head, and the main beam is provided with a front support device, a double support shoe mechanism and a bottom support in sequence from front to back. It also includes a rear supporting device, a first safety device and a second safety device are connected between the rear supporting device and the main girder, and the first safety device and the second safety device are arranged in series. The invention adopts the TBM method to expand and excavate the pilot tunnel, gets rid of the drilling and blasting excavation method, improves the quality of the tunnel, reduces the disturbance to the surrounding rock, reduces potential safety hazards, and improves the efficiency of expanding and excavating the pilot tunnel.

Description

technical field [0001] The invention relates to the technical field of inclined shaft construction, in particular to a hollow TBM cutter head, a TBM for expanding pilot tunnels for inclined shafts and a construction method. Background technique [0002] The traditional raise drilling rig method is mostly used in the construction of large-slope inclined wells in China. The excavation of the inclined shaft section with large diameter (>7 meters) is divided into three steps: 1. Drilling a pilot hole with a diameter of about 200 mm; A pilot hole with a diameter of about 3 meters is excavated by means of a disk; 3. Radially drill holes in the pilot hole, and excavate to a set diameter by drilling and blasting. The main problem of the traditional raising drilling method lies in the third step. The blasting operation in long inclined shafts has great potential safety hazards. At the same time, the drilling and blasting operation has a large disturbance to the surrounding rock, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/02E21D9/08E21D9/12
CPCE21D9/02E21D9/08E21D9/065E21D9/12
Inventor 贺飞宁向可于庆增张喜冬高翔秦庆华
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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