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Rock tunneling method and tunneling machine

A technology of tunnel boring machine and tunnel excavation, which is applied in the direction of tunnels, earth-moving drilling, mining equipment, etc., can solve the problems of large wear and consumption, reduce excavation efficiency, and increase construction cost, etc.

Inactive Publication Date: 2021-08-20
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the excavation process, the hob also bears the reaction force of the rock, which causes great wear and consumption. It is necessary to regularly repair and replace the hob cutter, which not only reduces the excavation efficiency, but also increases the construction cost.
[0003] At the same time, when encountering hard rocks with special-shaped sections, the excavation efficiency will also be reduced because the shape of the existing cutter head is inconsistent with the special-shaped section.

Method used

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Embodiment Construction

[0036] The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention.

[0037] Please refer to Figure 1 to Figure 5 , the present invention proposes a rock tunneling method, the rock tunneling method comprising:

[0038] Step 1, using a chainsaw device to cut out a pre-cut ring groove 300 along the outer edge of the rock support surface, and the rock in the pre-cut ring groove 300 is formed as a portion to be cut 400;

[0039] Step 2, inst...

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Abstract

The invention provides a rock tunneling method and a tunneling machine, and relates to the technical field of underground engineering tunnel equipment. The rock tunneling method comprises the steps that 1, a pre-cutting annular groove is cut out along the outer edge of a rock supporting surface through a chain saw device, and rock in the pre-cutting annular groove forms a to-be-cut part; 2, a rope saw device is installed in the pre-cutting annular groove and cuts the to-be-cut part along the pre-cutting annular groove, and the to-be-cut part is cut down from the rock support face to form a stone block; and 3, the stones are transported out of the tunnel. By means of the rock tunneling method and the tunneling machine, the excavation efficiency of hard rock strata can be improved.

Description

technical field [0001] The invention relates to the technical field of underground engineering tunnel equipment, in particular to a rock tunnel boring method and a boring machine. Background technique [0002] At present, tunnels in hard rock formations are excavated by using a circular shield machine or a circular TBM to excavate in hard rock formations. The hob cutters on the rotating cutterhead are used to squeeze and shear the rocks so that the rocks become fragments to realize tunnel excavation. . During the excavation process, the hob also bears the reaction force of the rock, which is very worn and consumed. It is necessary to regularly repair and replace the hob cutter, which not only reduces the excavation efficiency, but also increases the construction cost. [0003] At the same time, when encountering hard rocks with special-shaped sections, the excavation efficiency will also be reduced because the shape of the existing cutter head is inconsistent with the speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08E21D9/12
CPCE21D9/08E21D9/12
Inventor 张家年孙恒谷建军张静
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD