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Design method of cutter head for full-face rock tunneling machine with high-pressure water jet

A technology of high-pressure water jet and design method, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of high manufacturing cost, unsuitable for large-section continuous rock breaking, and huge cutter head structure, etc., and achieve high processing efficiency , easy to achieve, and reduce the effect of resistance

Inactive Publication Date: 2018-11-09
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent number: CN103244119A, the patent name is "Arrangement Method and Structure of High-Pressure Water Jet in TBM Cutterhead". The water nozzle method improves the rock-breaking efficiency through the characteristics of rock joint expansion or crushing under the impact of high-pressure water, but because the original overall disc structure of the cutter head is not changed, the cutter head structure is huge and the manufacturing cost is high.
However, due to the need for rock holes in the rock breaking process, it is not suitable for continuous rock breaking operations with large sections

Method used

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  • Design method of cutter head for full-face rock tunneling machine with high-pressure water jet
  • Design method of cutter head for full-face rock tunneling machine with high-pressure water jet
  • Design method of cutter head for full-face rock tunneling machine with high-pressure water jet

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Embodiment Construction

[0024] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and technical solutions.

[0025] The cutter head of the existing traditional full-face tunnel boring machine, through the rotation of the overall cutter head, makes the hob on the cutter head continuously squeeze the rock. When the ultimate shear stress and tensile stress exceed the shear and tensile stress of the rock itself When the strength is high, shear and tensile cracks appear, and the rock is broken by further extrusion. Due to the direct contact with the rock, the wear of the cutter is serious, and the life of the cutter head is affected.

[0026] as attached figure 1 As shown, the cutterhead layout form adopted in the present invention is a cutterhead in the form of two synchronously rotating cross-shaped spokes with identical structures: the first cutterhead 1 and the second cutterhead 2, and the centers of the two cutt...

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Abstract

The invention discloses a design method for cutterheads of a high-pressure water jet full-face rock tunnel boring machine and belongs to the technical field of tunneling of full-face rock tunnel boring machines. In the design method, according to the overall arrangement of the cutterheads, the two cutterheads which are of the completely identical structure, rotate synchronously and arranged in a cross-shaped spoke mode are adopted, the second cutterhead rotates anticlockwise relative to the first cutterhead by 45 degrees so as to be installed, and each cutterhead is composed of five components. According to the design method, the integral hob structure of traditional TBM cutterheads is changed, the arrangement in the form of spokes form two cross shapes is adopted, rock breaking is achieved through the impact of water jet on the four spokes and the rotary squeezing of a tool, and the characteristics that water jet machining is high in efficiency, low in energy consumption and easy to achieve are utilized; and high-pressure water is used for cracking rocks, expanding cracks and even breaking the rocks, the rock breaking resistance of the tool is reduced, and the service life of the tool is prolonged.

Description

technical field [0001] The invention belongs to the technical field of full-section rock excavation machines, and relates to a design method for a cutter head of a high-pressure water jet full-section rock-breaking excavation machine. Background technique [0002] In recent years, full-face rock boring machines have been widely used in the construction of water conservancy projects, railway transportation, subway projects, oil and gas pipelines and national defense tunnels in China. But most of these projects use traditional tunneling methods, which use rotating disc-shaped cutterheads and pressure on the blade face to cut through the rock. Although compared with the original drill and blast method, the TBM tunneling device overcomes the shortcomings of its low degree of mechanization, low labor productivity, low equipment utilization and low safety. However, due to the harsh working environment, high hardness of the rock, and severe wear of the hob, constant maintenance an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087
Inventor 霍军周朱冬孙伟王伟政
Owner DALIAN UNIV OF TECH
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